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General Category => Bike Builds, Rebuilds And Restorations Only => Topic started by: canuck750 on January 23, 2016, 12:24:32 PM

Title: 750S The Build is Done
Post by: canuck750 on January 23, 2016, 12:24:32 PM
I have been posting up various pics of the progress of the 750S I am starting to work on, going to put the progress here for those that have an interest.

The bike was imported from Germany into Canada a while back, not sure when, the fellow who imported the bike bought a lot of parts from TLM and Stien Dinse way back when and replaced the forks, wheel, brakes, cylinders, crank, bearings, rear drive, shocks, signal lights, switch gear, head and tail light and all the wiring, plus a lot more. The bike was probably salvage from a crash, blow up or both. The steering tube is really bent so I am pretty sure it went down hard once in its life. Tank and tool boxes have been poorly repainted but are rust free and the frame was painted red. It looks Ok from 10 feet away but it is pretty worn out,

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/P8110025_zpswklrjdiv.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/P8110025_zpswklrjdiv.jpg.html)

Both crash bars are pretty scraped up, the right cylinder has a home made exhaust flange retainer, and the previous owner added funky turn signal indicators to the instrument bezel.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/P8110016_zpsogixzmdl.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/P8110016_zpsogixzmdl.jpg.html)

It has a bizarre rear tail light and signal light assembly, not stock

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/P8110013_zpsbgj3veiz.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/P8110013_zpsbgj3veiz.jpg.html)

Big ass horn and repro swan necks

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/P8110009_zpsy7xzrjt8.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/P8110009_zpsy7xzrjt8.jpg.html)

850T3 era rear drive

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/P8110007_zpskh0uifqh.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/P8110007_zpskh0uifqh.jpg.html)

The strip down is not revealing too much I had not expected, other than the bent steering stem, all the bearings are full of dirt and water, seals are shot, hoses are soft, chrome and plating flaking off and all in all a 'Project'.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05021_zps75nssvcm.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05021_zps75nssvcm.jpg.html)

It all comes apart and gets cleaned, degreased, bead blasted and sorted for painting, zinc plating, chrome and repair or replacement.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05022_zpsnf8s9kba.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05022_zpsnf8s9kba.jpg.html)

Filling a big box of junk

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05024_zpszeig7obk.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05024_zpszeig7obk.jpg.html)

Giladorni cylinders look good,

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05032_zpslm9b75bt.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05032_zpslm9b75bt.jpg.html)

Charlie supplied a right hand replacement head with good exhaust threads, I found a good set of front and back Borrani rims, cleaned the hubs, replaced the bearings, polished the spokes and nipples and relaced the wheels

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC04918_zps6lculfbr.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC04918_zps6lculfbr.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC04923_zpscmeyhf0t.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC04923_zpscmeyhf0t.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC04939_zpsfrktfo4a.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC04939_zpsfrktfo4a.jpg.html)

Carbs cleaned, parts replaced and rebuilt

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC04940_zpshkv2n8v2.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC04940_zpshkv2n8v2.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC04946_zpscew4oex3.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC04946_zpscew4oex3.jpg.html)

Wet sanded the slide faces smooth with 600 grit

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC04972_zpspcpcomus.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC04972_zpspcpcomus.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC04979_zpsbyp2zdgy.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC04979_zpsbyp2zdgy.jpg.html)

Forks have been stripped, tubes are great, dampers are crap, new FAC's and progressive springs will go in after I polish up the lowers.

Swing arm bearings are pitted, the U joint is sloppy, boot is worn out. rear brakes have rock hard shoe surfaces and the internals are full of muck.

Work is going to get real busy this spring so I am aiming to get it all striped, cleaned and boxed to reassemble as time permits. Most of the parts I need have been sourced before the Canadian dollar collapsed under low oil prices so at least I won't break the bank on this one. I have been lucky to find a correct set of rear shocks, head light, signals, swan necks, switch gear, gauges, fuse box, rear drive and all the other little things to make it right.

I had started to accumulate parts to build a tribute from a 850T before this came along so I have an original late V7 tank and original 750S tool boxes already painted in the green stipe scheme.

(http://i249.photobucket.com/albums/gg217/canuck750/74%20850T/DSC04109_zps87d9fb0c.jpg) (http://s249.photobucket.com/user/canuck750/media/74%20850T/DSC04109_zps87d9fb0c.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/74%20850T/DSC04100_zps18d95b1e.jpg) (http://s249.photobucket.com/user/canuck750/media/74%20850T/DSC04100_zps18d95b1e.jpg.html)

More to come, slowly I think



Title: Re: 750S Rebuild merged
Post by: nick949 on January 23, 2016, 12:48:30 PM
It's wonderful that bikes like that end up in your hands Jim. By the time you're finished it will be a real treasure (as long as some wombat doesn't drain it and display it in their living room).

It makes me realize just how lucky I was with mine. I've now put about 20,000kms on it and it continues to run well.

Oh yes - and it's good to see that you hit your thumb too from time to time.  It makes the rest of us feel more human.

Nick
Title: Re: 750S Rebuild merged
Post by: canuck750 on January 23, 2016, 03:41:39 PM
It's wonderful that bikes like that end up in your hands Jim. By the time you're finished it will be a real treasure (as long as some wombat doesn't drain it and display it in their living room).

It makes me realize just how lucky I was with mine. I've now put about 20,000kms on it and it continues to run well.

Oh yes - and it's good to see that you hit your thumb too from time to time.  It makes the rest of us feel more human.

Nick

Thanks Nick, I think you got one heck of a deal with your 750S!
Title: Re: 750S Rebuild merged
Post by: motogman on January 23, 2016, 08:52:59 PM

Oh yes - and it's good to see that you hit your thumb too from time to time.  It makes the rest of us feel more human.


Isn't Jim a dentist (I might be wrong here)?  How do you know that thumb wasn't from a patient biting down?    :grin:

really nice work Jim.  I really appreciate your posts.   :bow: :bow:
Title: Re: 750S Rebuild merged
Post by: mantaray on January 24, 2016, 07:54:19 AM
Wow another project ........Yummi    :food:
Title: Re: 750S Rebuild merged
Post by: canuck750 on January 24, 2016, 11:14:17 AM
Isn't Jim a dentist (I might be wrong here)?  How do you know that thumb wasn't from a patient biting down?    :grin:

Not a dentist, the only thing I want to put in a persons mouth is a sock, :evil:
Architectural technologist by training, wanabee motorcycle mechanic by passion.
Title: Re: 750S Rebuild merged
Post by: canuck750 on January 24, 2016, 07:21:12 PM
Pulled the swing arm bearing and races out, but in doing so I pulled the cap right out with the race.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05036_zpsnm7eimtn.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05036_zpsnm7eimtn.jpg.html)

Never had that happen before, oh well knocked the race off with a brass drift and then pressed the cap back into the swing arm.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05038_zpsoixbuh6s.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05038_zpsoixbuh6s.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05039_zpskd9lpb9h.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05039_zpskd9lpb9h.jpg.html)

Pulled the valve gear out, the collets were so frozen on that my spring compressor bent and it took a knock with a brass hammer on the tip of the valve to free the pair of retainers.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05040_zps7rfayukq.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05040_zps7rfayukq.jpg.html)

Valves look pitted, I got one rebuilt head from Charlie M. and the other one will need new valves, guides and springs.

This poor tight side head is cracked, broken fin, stripped exhaust threads, a big paper weight!

Title: Re: 750S Rebuild merged
Post by: canuck750 on January 28, 2016, 09:30:45 PM
Progress continues slowly, blasted the rotors clean but they are already at their spec limit. I had another pair that came with a front wheel I picked up but they are the cheaper stamped Brembo discs, not as nice but they will do until I find a set of the forged type.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05044_zpsj7yd2xge.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05044_zpsj7yd2xge.jpg.html)

These have lots of meat left, 6.4mm +/-. off they go to True Disc for grinding

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05046_zpsxjt8a9bv.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05046_zpsxjt8a9bv.jpg.html)

Cleaned up the fork lowers,

I blasted them with crushed glass, then sanded them with 320 grit on a foam backed palm air sander, sanding first saves a lot of time polishing,

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05041_zps5aghngak.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05041_zps5aghngak.jpg.html)

I bought a different type of wheel, I think it is called a sizal wheel, cuts real fast and then finish with a buffer wheel and red cutting paste

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05042_zpsyf0qz6ej.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05042_zpsyf0qz6ej.jpg.html)

polished to a satin but not mirror

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05043_zps7pdc9be6.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05043_zps7pdc9be6.jpg.html)



Title: Re: 750S Rebuild merged
Post by: O on January 29, 2016, 10:25:17 AM
I love living vicariously through these build threads (for which I have neither the time nor vocation).  Thanks for taking the time to share the details!
Title: Re: 750S Rebuild merged
Post by: canuck750 on January 30, 2016, 06:31:43 PM
I love how you just pull everything off a Guzzi and you get left with this, one big lump

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05054_zpsiovclmgz.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05054_zpsiovclmgz.jpg.html)

And when I pulled the front timing cover I found this,

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05053_zpsacbzhvaf.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05053_zpsacbzhvaf.jpg.html)

Aluminum gears on the cam and oil pump, I think the crank gear is an original steel gear. And it looks clean in there.

spun the nuts off the bell housing, dropped the transmission and revealed the flywheel and clutch.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05058_zpsp749ss5h.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05058_zpsp749ss5h.jpg.html)

Then filled a pail with cylinders, heads, brake plate, valve covers and the transmission and off to the car wash with a premixed 50/50 solution of aluminum brightener and water, strip off the oxidation in a couple passes. All the aluminum castings need a blast of soda and then a coating of ACF50.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05056_zpswjvswvhe.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05056_zpswjvswvhe.jpg.html)

I ran a gallon of paint thinner through the transmission, sloshed it around and then dried it out with air. Next to strip the engine and transmission and measure everything, check bearings etc...

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05055_zpsge3p4cto.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05055_zpsge3p4cto.jpg.html)
Title: Re: 750S Rebuild merged
Post by: canuck750 on January 31, 2016, 06:40:36 PM
Stripped the engine today, oil was filthy, like molasses, internals look good but I still need to mic everything. The big end shells look lile they could use replacement.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05063_zpsoxb3nrg1.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05063_zpsoxb3nrg1.jpg.html)

Crank shaft was replaced in the 90's, should polish up fine, I wish I knew how to identify the cam, I wonder if it is a B10 or not?

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05065_zps8czsipxv.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05065_zps8czsipxv.jpg.html)

Back to the car washer and four soakings with NAPA aluminum brightener, spotless

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05066_zpsj9rrfjun.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05066_zpsj9rrfjun.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05061_zpsnzwknyp2.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05061_zpsnzwknyp2.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05059_zpsuir20ugo.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05059_zpsuir20ugo.jpg.html)
Title: Re: 750S Rebuild merged
Post by: nobleswood on January 31, 2016, 09:31:26 PM
Canuck750,

As someone else posted, I appreciate the tips & pointers, the sisal wheel, the 320 grit on a foam backed disc. All these comments do help the 'not so skilled yet'.

Thanks :popcorn:
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 01, 2016, 01:55:34 PM
Canuck750,

As someone else posted, I appreciate the tips & pointers, the sisal wheel, the 320 grit on a foam backed disc. All these comments do help the 'not so skilled yet'.

Thanks :popcorn:

I really can't take any credit for the tips, most of them came from the real experts in the community, Mark E, Gregory B, Charlie M, Joe W, Rolf H, the guys at MG Cycle, Harper's, and so many more guys who so freely share their knowledge, the Guzzi community is a great bunch.
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 06, 2016, 06:22:11 PM
I flat sanded the base of the block and the oil pan (as explained by |Gregory Bender on This Old Tractor web site), brush on engineer's blue dye, glue some 400 grit sand paper to a slab of granite and rotate the block and pan on the sand paper,

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05068_zpsxudmgnyx.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05068_zpsxudmgnyx.jpg.html)

It only takes a couple minutes of spinning, sliding the parts with moderate pressure to get a flat surface

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05071_zpsaat7lwms.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05071_zpsaat7lwms.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05070_zpsflfgettj.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05070_zpsflfgettj.jpg.html)

I tore down the transmission,

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05072_zpsiexbzit7.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05072_zpsiexbzit7.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05073_zps95govaes.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05073_zps95govaes.jpg.html)

three stuck 6mm bolts, drilled / ground the bolt heads off, the speed drive head is stripped, ground flat surfaces and a big vise grip got it off.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05074_zpsc8qftiil.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05074_zpsc8qftiil.jpg.html)

The inside is a sorry mess, grit, grime,

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05075_zpsqsoajimm.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05075_zpsqsoajimm.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05076_zps5vqnxl3k.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05076_zps5vqnxl3k.jpg.html)

Most of the bearings are sloppy and have a notch in them

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05077_zpsjkq3xqte.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05077_zpsjkq3xqte.jpg.html)

Varsol and then an hour in the ultrasonic cleaner

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05079_zpsrb7i6c5z.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05079_zpsrb7i6c5z.jpg.html)

Soda blasted the cases

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05081_zpshsberu2q.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05081_zpshsberu2q.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05082_zpsklce4lrt.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05082_zpsklce4lrt.jpg.html)

The transmission will need a bearing set and hopefully the rest of it measures up ok




Title: Re: 750S Rebuild merged
Post by: John A on February 06, 2016, 06:34:53 PM
That is some good porn!
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 07, 2016, 09:48:01 PM
I got to spend a couple hours in the quiet of the garage, seems like not a lot was accomplished by the few pictures I took,

the previous owner covered the cam plug with a soft rubber like caulking that was peeling off. I ran a wire brush over it,, removed all the old goop and mixed up some JB Weld, filled in and should last a lifetime.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05084_zpskbtngmeh.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05084_zpskbtngmeh.jpg.html)

I dumped all the cad plated parts on the floor and wore out a fine brass wire wheel on the bench grinder getting everything clean. 2 hours just disappeared. I tie up as much of the small parts as I can with wire and this week I will take the lot in to get cad plated. It's a pretty big box of parts when you add it all up.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05085_zpsjsricti5.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05085_zpsjsricti5.jpg.html)

The messy and dirty jobs are behind me now for this bike, that is a milestone in my book. I enjoy the reassembly and am glad to be done the cleaning and prep.

Next to prep the small parts for powder coating and ship off the chrome bits that need plating.
Title: Re: 750S Rebuild merged
Post by: Muzz on February 08, 2016, 03:23:13 AM

Jim, I am truly in awe at your attention to detail. Your work is an absolute joy to behold! :drool: :drool: :thumb:
Title: Re: 750S Rebuild merged
Post by: balvenie on February 08, 2016, 05:37:29 PM
I would love to do stuff like that :grin:

But I can't so I'll sit here and watch :thumb: Thanks for posting Jim
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 08, 2016, 09:23:55 PM
Thanks for the encouragement fellas, tonight I need it

Broke out the micrometers tonight, first off the oil pump, one shaft just on the limit

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05087_zpsxpapr1ao.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05087_zpsxpapr1ao.jpg.html)

But the other one is worn, I have a couple of other used ones, hopefully I can find a shaft that is in spec

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05086_zpssnwi2y8s.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05086_zpssnwi2y8s.jpg.html)

The cam measures up in tolerance on both bearing ends.

The crank,  both the timing side and flywheel side are past tolerance, this is so disappointing :cry:

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05088_zpsi7jb9ed7.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05088_zpsi7jb9ed7.jpg.html)

The pin is OK but the rod shells are worn out and need replacement, so now I need to order a pair of 1st under size bearings and shell out for a crank grind. There goes another $800.00 that I was not planning on. :angry:

This now makes four of the early non-oil filter bikes (Eldo, V7 Sport X2, 750S) that the cranks were worn past tolerance, that is what you get when you run flaking chrome bores and dirty oil!!

So for what was advertised as a bike that had a rebuilt drive line I have a worn crank, worn out transmission bearings and a shot U joint, not to mention finished rotors, steering bearings, swing arm bearings etc...... I have no doubt the bike was rebuilt, but that was twenty + years ago and since then some one really flogged this bike. 

I guess this falls under the buyer beware caveat. :violent1:
Title: Re: 750S Rebuild merged
Post by: Antietam Classic Cycle on February 08, 2016, 09:44:00 PM
$164 will buy a new oil pump. Worth every penny after spending all those $$ on crank grinding and bearings.
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 08, 2016, 10:38:46 PM
$164 will buy a new oil pump. Worth every penny after spending all those $$ on crank grinding and bearings.

Your right Charlie, just need to get over the disappointment of the crank and bearings :sad: A new pump will need to be ordered.
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 09, 2016, 10:39:44 PM
Love your threads Jim  :thumb:

 Dusty

Thanks Dusty!

This 750S is hell bent on fighting me. I started on replacing the transmission case bearings beginning with removing the races on the end of the shafts. I think its best to match new bearings to new races but I wish I had left these two alone. Two hours to pull two races. Several pullers, heat, grinder and a lot of cursing and the darn things finally came off.

The point of no return, heated races are no longer any use so they have to come off. I managed to get the race to budge just enough to slip this puller under it.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05089_zpsebqqnlqc.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05089_zpsebqqnlqc.jpg.html)

Now this bugger was determined to stay on its shaft. I don't think I have ever had anything so hard to remove.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05090_zps76drhuag.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05090_zps76drhuag.jpg.html)

I had to grind the race flat and cut some grooves in it so the puller would have something to bite on to. Crazy!

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05091_zpsfaztmqqw.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05091_zpsfaztmqqw.jpg.html)

I applied some bearing retainer and this factory tool helps get the new race on straight and with little effort.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05093_zpshis5go4y.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05093_zpshis5go4y.jpg.html)

Two races, one evening, damn!

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05094_zpsvw9qwxfy.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05094_zpsvw9qwxfy.jpg.html)

Title: Re: 750S Rebuild merged
Post by: SED on February 09, 2016, 11:18:42 PM
Great thread Canuck!  Love the pictures and the commentary.  I can imagine coming back to it to check how to do everything from polishing fork lowers to removing stubborn bearing races.

You do beautiful work.
Thanks!
Shawn
Title: Re: 750S Rebuild merged
Post by: Muzz on February 09, 2016, 11:36:15 PM
I must say again Jim, to see what you do and how you do it is worth it's weight in gold. :bow: :bow:

Although I am not (at this stage anyway :grin:) in to doing what you do I am certainly learning heaps as to when the time comes. (I have an AG200 Honda out the back ready for when I retire when I find time now that I AM retired. :undecided:
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 10, 2016, 09:56:37 PM
Thanks Sed, Muzz,

Guzzis are probably one of the easiest bikes to work on , the motor is simpler than a small block Ford.

Still working on the transmission, HMB sells a kit of bearings for the transmission case. The special shaft bearing is accessed after removing this locking nut, it is reverse thread! There is a punched surface that needs to be pried out of the nut before it will spin off. I use an end off an old U joint to hold the shaft in the vice so I can get the nut off. The Old U joint yoke comes in handy for many transmission jobs to hold the output shaft.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05096_zpsta9onm5m.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05096_zpsta9onm5m.jpg.html)

I slipped the new bearing on and a dab of locktite before snugging the nut back on and punching the face into the recess into the shaft.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05097_zps4g4vdhcn.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05097_zps4g4vdhcn.jpg.html)

Now its baking time, I found an old wall oven fro free on Kijiji, its the second one, the first one lost an element after a couple years so I went back on line and found another free one.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05098_zpskesfmvfe.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05098_zpskesfmvfe.jpg.html)

I use these bearing drifts to holed the bearing straight and give them a light \tap' to ensure they are fully bottomed

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05103_zpsysir3mxb.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05103_zpsysir3mxb.jpg.html)

After 20 minutes at 350F and the allloy has expanded so the new race and bearings can drop right in

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05104_zpscv5ttk1i.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05104_zpscv5ttk1i.jpg.html)

The bearings drop right in

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05105_zpsmfytaey7.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05105_zpsmfytaey7.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05106_zpsze41hjyf.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05106_zpsze41hjyf.jpg.html)

And before the guts are reassembled two new O rings

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05100_zpslwkuqg8b.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05100_zpslwkuqg8b.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05099_zpsnouqyzsv.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05099_zpsnouqyzsv.jpg.html)

This dog is really worn

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05102_zpsohh8cm0t.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05102_zpsohh8cm0t.jpg.html)

I found a used one in much better shape (though it too shows wear).

Next to shim the shift drum and then put it back together.
Title: Re: 750S Rebuild merged
Post by: Muzz on February 10, 2016, 10:23:53 PM
Looking at your oven Jim reminded me of many years ago when we were first married, my wife opened the oven door when she noticed it was on to find a couple of Matchless crankcases getting a bake. :thewife: :thewife: :thewife: :thewife: followed. Once she had calmed down some negotiation happened and I was able to end up with a gas welder "for heating". Yes, I know it don't really bake crank cases very well but it is a VERY useful piece of kit and so far I have not needed to bake any others since. (Now where is the fingers crossed emoticon.... :undecided:)

I have needed to get inside the Breva gearbox twice, which I gather is very unusual, but thanks to a number of members on this site  :bow: I have been able to fix it and get it back together again.
Title: Re: 750S Rebuild merged
Post by: Late to the party on February 10, 2016, 11:21:28 PM
Dear Canuck 750,

You are my hero. That is all.

Lateness.
Title: Re: 750S Rebuild merged
Post by: Aaron D. on February 11, 2016, 06:05:20 AM
Great stuff!

Those timing gears look like the ones I put in my LeMans. They are good. That bike would have had a chain originally.
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 11, 2016, 07:44:22 AM
Great stuff!

Those timing gears look like the ones I put in my LeMans. They are good. That bike would have had a chain originally.

A chain? Interesting, I would have guessed a gear set but it makes sense now given the alloy gears that are in it. Still no oil filter though, I was hoping to see one when I opened it up.

Ovens are great Muzz, I use it mostly for powder coating. I do my own powder for small stuff, its very cheap and easy to do at home. Eastwood Automotive has a great DIY powder gun and they sell a decent selection of powder, I really only need semi gloss and wrinkle black for what I do (and royal blue for my tools!). I really like how Powder is so mess free, just sweep up the unused powder ad blow off the rest and you only need a couple psi of dry air. I have seem large toaster ovens in use as well for small parts.

Cheers

Jim
Title: Re: 750S Rebuild merged
Post by: Muzz on February 11, 2016, 12:27:37 PM

 I have seen large toaster ovens in use as well for small parts.

Cheers

Jim

Never thought of that. A large one could probably hold a crankcase as well.
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 12, 2016, 11:05:24 PM
I am waiting on engine bearings and some transmission parts so its a good time to get the small parts powder coating done.  Bead blast and wire brush cleaned the parts up.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05107_zpsz7ufs55y.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05107_zpsz7ufs55y.jpg.html)

Then wash everything down with acetone and use the silicone plugs to protect the threads

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05110_zpsitlvp9xu.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05110_zpsitlvp9xu.jpg.html)

Then hang all the parts off a steel bar balanced on a step ladder, I use jumper wires to make sure the current is strong to each part

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05111_zps6job0sdx.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05111_zps6job0sdx.jpg.html)

I regulate the air at 5 psi, press the trigger to charge the parts and the powder is attracted to the part, bump a part by mistake and the powder will just fall off, carefully transfer the parts with plyers to the pre-heated oven and let bake at 375F for 20 minutes

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05114_zpsf0usek37.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05114_zpsf0usek37.jpg.html)

In 5 minutes the powder gels over then hardens in another 15 minutes of baking

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05115_zpsjqlqla5a.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05115_zpsjqlqla5a.jpg.html)

After the parts cool remove the plugs and cut the hanger wires

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05117_zpshuydjndu.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05117_zpshuydjndu.jpg.html)

The triples clamps and head light brackets are coated with wrinkle black powder

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05119_zpsrwqvavk0.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05119_zpsrwqvavk0.jpg.html)

I use an Eastwood Automotive powder gun and get my powder from Eastwood as well. Powder coating small parts is very simple and cheap to do.  The frame, swing arm and frame lowers go to the pros who have equipment big enough to handle the large stuff. For small items the DIY kit saves a lot of money and you don't need to worry about small parts going missing. Alarge toaster oven will do the job just as good as an oven of you don't have the room.

Clean up is a breeze, just sweep up and then blow out the rest of the dust from the shop, no smells, no off spray.
Title: Re: 750S Rebuild merged
Post by: Muzz on February 13, 2016, 12:52:57 AM
 :bow: :bow: :bow: :bow:

Lovely! And so easy too! :shocked: :undecided:
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 14, 2016, 08:42:23 PM
Today I decided to sort through my parts boxes before I do any more work or buy any more parts, this is about half the boxes, same amount in the garage attic, maybe my wife is right about this Guzzi thing being an obsession :thewife:

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05120_zpsbznysdjx.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05120_zpsbznysdjx.jpg.html)

I found a new pair of FAC dampers, pair of crash bars, front fender, and a few other things I forgot I even had.

So after sorting the boxes I found at least eight new foot peg rubbers, so I powder coated the foot rests and assembled them, the 750 S has back foot rest brackets.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05121_zpsd3lduikb.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05121_zpsd3lduikb.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05128_zpsj7wajefw.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05128_zpsj7wajefw.jpg.html)

I was lucky to find a km/hr correct V7 Sport speedo on Ebay Germany (fat indicator dial) to go on the 750 S (it came from Germany). I powder coated the bezel and base and applied a new decal.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05129_zpsvxk7wmpf.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05129_zpsvxk7wmpf.jpg.html)

The Tach is from a 850T with an Eldorado face with the text "electronic' painted over and the red line 'raised' up to the V7 Sport limit. The skinny indicator dial is the give away that it is not from a V7 Sport, a correct one will show up one day.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05130_zps6liid6pj.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05130_zps6liid6pj.jpg.html)

A few more little jobs done.
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 15, 2016, 06:53:13 PM
I got some more quiet time in, the storm starts tomorrow, I have landed a couple large projects that will keep the office busy for a couple years so bike stuff will go to the back of the line for awhile.

So until the crazy deadlines begin some more small jobs got finished.

The distributor was missing fasteners, clips an was very dirty

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05137_zpsthr8sbgz.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05137_zpsthr8sbgz.jpg.html)

And the rotor and stator are quite corroded and full of carbon

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05138_zpsftcew7hd.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05138_zpsftcew7hd.jpg.html)

Everything went under the soda blaster

Insulation replaced on the stator and new brushes

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05139_zpscvbvsg6z.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05139_zpscvbvsg6z.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05141_zpsinxngpqc.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05141_zpsinxngpqc.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05142_zpsnedjt9xa.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05142_zpsnedjt9xa.jpg.html)

Distributor cleans up real nice with soda, this tiny washer goes here

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05144_zpssbw23hqg.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05144_zpssbw23hqg.jpg.html)

Advance weights and plate cleaned and lubricated

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05145_zpss2wxq4m3.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05145_zpss2wxq4m3.jpg.html)

and new advance mechanism springs

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05146_zpst6oa9k8a.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05146_zpst6oa9k8a.jpg.html)

New points and condensers

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05148_zpsvax8cczc.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05148_zpsvax8cczc.jpg.html)

Soda also cleans the carbon off the rotor

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05149_zpsym4g8cdd.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05149_zpsym4g8cdd.jpg.html)

The starter was stripped and powder coated, zinc plates small bits

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05150_zpsis8qtbfh.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05150_zpsis8qtbfh.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05151_zpsmow9hwf5.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05151_zpsmow9hwf5.jpg.html)

I use finishing nails to hold the brush springs back while the armature is slid back into position

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05152_zpsuoxoczes.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05152_zpsuoxoczes.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05153_zps2ifdnqr2.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05153_zps2ifdnqr2.jpg.html)

Replace the end cap, shims and shaft clip

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05154_zpsjatwrpeb.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05154_zpsjatwrpeb.jpg.html)

Bendix slider is a little tricky to get back in to place

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05155_zpsvv6fjspq.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05155_zpsvv6fjspq.jpg.html)

And its done, I will fit a new solenoid,

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05156_zpsbgjzucke.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05156_zpsbgjzucke.jpg.html)

Tackling the rebuild one assembly at a time keeps the momentum going and there is that little satisfaction as each component is refreshed.



Title: Re: 750S Rebuild merged
Post by: canuck750 on February 16, 2016, 10:23:26 PM
I got lucky with Ebay recently and found a pair of original Koni V7 Sport shocks, they were advertised as being for an Eldorado and looked rough.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05163_zpsde8zzggu.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05163_zpsde8zzggu.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05164_zpsujysg8te.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05164_zpsujysg8te.jpg.html)

They don't like like much at first but the remains of the Koni decal are evident. These are getting to be quite rare and I was glad to find these have good shafts under all the dirt.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05157_zpsapisbbww.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05157_zpsapisbbww.jpg.html)

Removing the springs is pretty straight forward,

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05158_zpsfvccvbrf.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05158_zpsfvccvbrf.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05159_zpsl8kfznkv.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05159_zpsl8kfznkv.jpg.html)

The worn out rubber clad bushings pop out with a couple sockets in a vice

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05160_zpsyqn7tthq.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05160_zpsyqn7tthq.jpg.html)

The top eyelet comes of by holding it in a vice and with a 19mm wrench cracking the lock nut on the shaft loose, then spin off the eyelet. A 19mm socket in an air impact wrench will spin the lock nut off the shelf. The slide the rubber bumper and thin washer off the shaft.

Now the hard part, the cap on top of the body is threaded into the lower main body and is often seized. A two pin hook spanner is the only way to get this cap off, the pins must be tight fitting in the cap. I use a drill bit to clean all of the git out of the holes in the cap. Tap the hook spanner pins into the cap and with a long breaker bar crack the caps loose.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05166_zpsyrr64rcz.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05166_zpsyrr64rcz.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05167_zpsd1mofxaw.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05167_zpsd1mofxaw.jpg.html)

Once the cap is off the shaft can be removed with all the internals, inside of cap with the steel concave washer covering he rubber seal

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05168_zpsbcbk4rnp.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05168_zpsbcbk4rnp.jpg.html)

Internal return spring

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05169_zpsfthr098e.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05169_zpsfthr098e.jpg.html)

Shaft with bushings

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05170_zpse5rmdwgd.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05170_zpse5rmdwgd.jpg.html)

and the bottom end of the shaft assembly

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05171_zpsqqgawmrd.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05171_zpsqqgawmrd.jpg.html)

Inner steel tube the shaft slides within

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05172_zpssrjualke.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05172_zpssrjualke.jpg.html)

And the bottom bushing

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05173_zpspvdspylp.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05173_zpspvdspylp.jpg.html)

Bottom bushing has several steel shims that are spring and through which the fluid passes under damping

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05174_zpsa12gxky0.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05174_zpsa12gxky0.jpg.html)

It all goes into the ultrasonic cleaner, I will disassemble all the valve shims. make sure everything is clean then rebuild the shocks.  Chrome parts will get replated, bodies powder coated, Cycle Garden sells repro decals and I may be able to track down some new springs to fit.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05176_zpsoruy86pz.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05176_zpsoruy86pz.jpg.html)

These Koni's were state of the art back in the early 70's and the V7 Sport / 750S was built to a pretty high specification. There are much better shocks available today but I prefer to see the the original shocks on the bike. I have a rebuilt set on my V7 Sport and the ride is not too shabby.




Title: Re: 750S Rebuild merged
Post by: mrrick on February 17, 2016, 02:43:18 AM
So all you need to do is clean and re-assemble?  I assumed there wd be some seals or bushings or whatever, that wd require replacement, no?
And if so, where do you find such parts?  I have a pair of these myself, and planned to send them to Robert in Fairfield, CA (rhaagusa on eBay) who says the old Koni's have a plastic washer that turns to mush over the years.
Here is one of his current listings, where he discusses the issue:
 http://www.ebay.com/itm/KONI-13-rebuilt-shocks-Triumph-BSA-Rickman-Norton-CZ-Maico-Bultaco-OSSA-Zundapp-/141901671718?hash=item2109ffad26:g:FCgAAOSwuYVWpYkw
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 17, 2016, 09:01:05 AM
I sent a pair of Koni shocks to Robert to rebuild. The seals were shot and he replaced them and did a great job. I don't know anything about the plastic washer, I was going to contact Robert to find out how much fluid is required. The seals in  these Koni's look good, there was no sign of leaking and the fluid was pretty clean inside, the shaft moved freely. Other ones I had had were all gummed up.
Title: Re: 750S Rebuild merged
Post by: Dukedesmo on February 17, 2016, 12:59:56 PM
I wish I knew how to identify the cam, I wonder if it is a B10 or not?


Firstly nice work.    :thumb:


Does the cam have any markings on it?

I had a similar query and put up a pic of the 'K' stamped on the end of mine to be told (by a knowledgeable member) that it was a B10.

(http://ducatiforum.co.uk/data/photos/l/5/5893-1437649513-32adec59d7e2ee4065b7928ef9c6b10d.jpg) 

Title: Re: 750S Rebuild merged
Post by: canuck750 on February 17, 2016, 04:04:37 PM
Firstly nice work.    :thumb:


Does the cam have any markings on it?

I had a similar query and put up a pic of the 'K' stamped on the end of mine to be told (by a knowledgeable member) that it was a B10.

(http://ducatiforum.co.uk/data/photos/l/5/5893-1437649513-32adec59d7e2ee4065b7928ef9c6b10d.jpg)


I can't see any marks on the cam, guessing it is stock. I want to fit a B10 cam in this bike and may just send the cam to Colt Cams. I think Colt made up the B10 cams that MG Cycle were selling.
Title: Re: 750S Rebuild merged
Post by: Don G on February 17, 2016, 04:32:35 PM
Well a while back I wanted a B10 cam, Colt said that I would have to deal with MG Cycle as they were the distributor, so I contact MG and was told that they had no cores to send Colt to be ground. I was not going to send a core to MG and have them send it to BC and then back to the States and finally to me. Ended up buying a MegaCycle X10.  DonG
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 17, 2016, 06:39:41 PM
Well a while back I wanted a B10 cam, Colt said that I would have to deal with MG Cycle as they were the distributor, so I contact MG and was told that they had no cores to send Colt to be ground. I was not going to send a core to MG and have them send it to BC and then back to the States and finally to me. Ended up buying a MegaCycle X10.  DonG

Hi Don,
Where did you buy your Mega Cycle cam from?
Title: Re: 750S Rebuild merged
Post by: Antietam Classic Cycle on February 17, 2016, 06:42:03 PM
Delta Camshaft in Tacoma, WA can grind a Guzzi cam to B10 specs.
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 17, 2016, 07:00:05 PM
Delta Camshaft in Tacoma, WA can grind a Guzzi cam to B10 specs.

Thanks Charlie

I will look them up tomorrow.

Jim
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 17, 2016, 09:19:55 PM
So all you need to do is clean and re-assemble?  I assumed there wd be some seals or bushings or whatever, that wd require replacement, no?
And if so, where do you find such parts?  I have a pair of these myself, and planned to send them to Robert in Fairfield, CA (rhaagusa on eBay) who says the old Koni's have a plastic washer that turns to mush over the years.
Here is one of his current listings, where he discusses the issue:
 http://www.ebay.com/itm/KONI-13-rebuilt-shocks-Triumph-BSA-Rickman-Norton-CZ-Maico-Bultaco-OSSA-Zundapp-/141901671718?hash=item2109ffad26:g:FCgAAOSwuYVWpYkw


I think the seal that commonly degrades is this one, on other Koni's I have opened up these were in rough shape.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05179_zpsafn9lgob.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05179_zpsafn9lgob.jpg.html)

One is good and one should be replaced. I need to check with a local seal specialist and see if they have these in stock, they are flat faced like the seals in a Brembo caliper.

There are valves that have sprung steel discs that under pressure allow fluid to pass. There are tiny holes in the assemblies that need to be cleaned with compressed air and I used an ultrasonic cleaner as well.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05178_zpstuura9dh.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05178_zpstuura9dh.jpg.html)

Title: Re: 750S Rebuild merged
Post by: dan_s on February 17, 2016, 11:27:30 PM
The breather boxes are rust traps. Try to look inside to see if there is loose rust flakes before operating.
Title: Re: 750S Rebuild merged
Post by: Don G on February 18, 2016, 08:34:18 AM
Canuk: I got a couple from Ed Milich @ GUZZIPOWERDOTCOM $450 ish if I remember correctly. The X10 is a little more radical, had to cut out the valve reliefs a bit. The X9 is a little bit more sedate, I have an X9 on its way to a cam grinder at the moment, will see if that profile can be transfered to a factory cam, will let you know how that turns out.  DonG
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 18, 2016, 08:42:57 PM
Canuk: I got a couple from Ed Milich @ GUZZIPOWERDOTCOM $450 ish if I remember correctly. The X10 is a little more radical, had to cut out the valve reliefs a bit. The X9 is a little bit more sedate, I have an X9 on its way to a cam grinder at the moment, will see if that profile can be transfered to a factory cam, will let you know how that turns out.  DonG

Thanks Don,  I may go that route.
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 18, 2016, 08:44:41 PM
I took the Koni shocks to a Seal distributor today, the flat O ring seal is a "TS7 215".
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 18, 2016, 08:46:36 PM
The breather boxes are rust traps. Try to look inside to see if there is loose rust flakes before operating.

Hi Dan

I soaked the breather box in Evaporust for a couple weeks, clean as a whistle.

Cheers

Jim
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 19, 2016, 10:31:30 PM
I picked up a box of shiny cad plating today, $50 for a box, cheap and quick service

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05180_zpswixzerhq.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05180_zpswixzerhq.jpg.html)

Fitting FAC dampers, they need a little modification though they would fit right in to the tubes the top is a little tall and the air caps need to be removed, the female threads opened up to 8mm and a recess cut in

The pile of parts that become forks

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05182_zpsyxjklsr2.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05182_zpsyxjklsr2.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05184_zpsex7rtqsf.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05184_zpsex7rtqsf.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05186_zpshhpc5djb.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05186_zpshhpc5djb.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05187_zpsmpcq0n4n.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05187_zpsmpcq0n4n.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05188_zpswgg0ewha.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05188_zpswgg0ewha.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05189_zps2rp6elpu.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05189_zps2rp6elpu.jpg.html)

The special bolts retain the instrument cluster

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05190_zpsrhsj0ntb.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05190_zpsrhsj0ntb.jpg.html)

Replated damper rods and spring caps

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05191_zpsqp0eryom.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05191_zpsqp0eryom.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05192_zpsmdnazzfz.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05192_zpsmdnazzfz.jpg.html)

Compress the spring and fit the snap ring

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05199_zpsb9w1waoc.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05199_zpsb9w1waoc.jpg.html)

Fit new fork seals

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05198_zpsd6y8pg8x.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05198_zpsd6y8pg8x.jpg.html)

Sealant and a brass washer on the drain plug

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05200_zpsqkqnobha.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05200_zpsqkqnobha.jpg.html)

50cc of fork oil

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05196_zpsm6qenamr.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05196_zpsm6qenamr.jpg.html)

sealant on the bottom fork bolt

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05197_zpsvfz7qqrh.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05197_zpsvfz7qqrh.jpg.html)

new dust caps and they forks are back together

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05201_zps2hylsh9g.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05201_zps2hylsh9g.jpg.html)

Packed new bearings with grease and drift the lower bearing over the stem

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05202_zps2muo969o.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05202_zps2muo969o.jpg.html)

Plastic pipe spacer keeps the bearings apart for now

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05203_zpsyhmvxro1.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05203_zpsyhmvxro1.jpg.html)

Back together ...... but the steering damper is too short which means the stem is too long. This lower triple and stem is off a later 180mm spaced front end , Le Mans MK I  ?? I bought  this lower triple complete with a steering stem intact a couple years ago, it was advertised as off a V7 Sport.  I hadn't noticed the lower triple has no lugs for the steering damper plate so I will need to straighten the original bent stem and press it back into the original lower triple.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05204_zpss0ep4jrn.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05204_zpss0ep4jrn.jpg.html)



Title: Re: 750S Rebuild merged
Post by: canuck750 on February 20, 2016, 05:46:30 PM
Hmmm, a mystery indeed

The original bent and cracked stem on the right and the lower triple as it came with intact stem advertised as Moto Guzzi V7 Sport.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05209_zpsnkvqvjln.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05209_zpsnkvqvjln.jpg.html)

Cast triple is the same as other V7 Sport / 750S / S3 triples I have with the exception of the two cast lugs on the underside to engage the steering damper plate.

Mystery stem on the top, 750S stem on the bottom. The original is waisted where the bearing rests and the balance of the shaft is a wee bit narrower down to the waisted base where the lower bearing rests.

The mystery stem is not waisted and the standard Guzzi steering bearings is loose without the wasited section. 

Seems very odd.

the narrow fork spacing is shared with the early V7 Sport / 750S / S3 and LeMans MK I and then again on the Le Mans MK III.

assuming this mystery stem is in the original lower triple (no lugs for damper) could this item be off a Le Mans MK III? Anyone know if the MK III has a longer frame neck and why any idea why Guzzi would have eliminated the wasited section on the steering stem and allow the bearing to rock?

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05210_zpskorpizvv.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05210_zpskorpizvv.jpg.html)

I think my choices are to have a machine shop make up a new stem to match the buggered one I have or find a 26mm X 1.00 die and cut the threads down lower on the mystery stem and shorten the overall length to match and live with the rocking bearing.

Anyone have any knowledge on Guzzi stem lengths and what would you advise regarding modifying the mystery stem?
Title: Re: 750S Rebuild merged
Post by: Antietam Classic Cycle on February 20, 2016, 06:29:51 PM
If either bearing doesn't fit tightly on the stem, the forks will wiggle around. Not good for handling...
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 21, 2016, 09:37:09 AM
If either bearing doesn't fit tightly on the stem, the forks will wiggle around. Not good for handling...

My thoughts as well.

As far as I can tell the V7 Sport and 850T frames are the same and I assume the steering neck is identical.

Does anyone have a stem off an 850T or T3 to confirm if either of these have the upper wasited section for the top bearing and the overall length of the 850T / T3 steering stem from underside of triple to top of threaded?

I am hoping I can find a good used 850T / T3 stem and swap it out.

Thanks

Jim
Title: Re: 750S Rebuild merged
Post by: guzzista on February 21, 2016, 11:47:13 AM
When I found the V7 Sport triple clamps they did not have a steering stem so I uses a T/T3 stem and there was no slop where the bearing inner races fit. My original T stem had boogered threads so I could not use it . Will look for it and check  /measure it.
Title: Re: 750S Rebuild merged
Post by: guzzista on February 21, 2016, 03:42:05 PM
Confirmed. My T Steering stem has a slightly  thicker section ( waisted?) for the bearing to make a snug fit on. I am thinking any short neck Tonti big twin  stem should work . Good luck and thanks for sharing your builds on WG
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 21, 2016, 03:58:09 PM
Confirmed. My T Steering stem has a slightly  thicker section ( waisted?) for the bearing to make a snug fit on. I am thinking any short neck Tonti big twin  stem should work . Good luck and thanks for sharing your builds on WG

THANKS!  That is great news, I shouldn't have any trouble finding a Tonti frame stem.

Jim
Title: Re: 750S Rebuild merged
Post by: canuck750 on February 27, 2016, 09:18:26 PM
I figured out where the mystery lower triple came from - LM III

The LM III on the top, V7 SPort on the bottom, same fork tube spacing, offset, diameter etc.... but the LM III piece is heavier around the fork tubes

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05211_zpsx9kawoso.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05211_zpsx9kawoso.jpg.html)

And the LM III has no lugs on the underside

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05212_zpsjbq8vgpp.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05212_zpsjbq8vgpp.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05213_zpsurddnbtx.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05213_zpsurddnbtx.jpg.html)

In a pinch the LM III triple can work with the V7 Sport front end

Back to the shocks, I found out they take 70cc of 3 weight oil, I found Amsoil 5 weight which the race shop I deal with tells me it is more like 3 weight so I used it in the Koni's

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05215_zpspe48bvdl.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05215_zpspe48bvdl.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05216_zps3bvuj8cb.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05216_zps3bvuj8cb.jpg.html)

I found new bushings at HMB in Germany

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05217_zps8vuhnz5r.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05217_zps8vuhnz5r.jpg.html)

I found new rubber bumpers at an automotive supply store.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05218_zpsh9tonjvp.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05218_zpsh9tonjvp.jpg.html)

New Koni shocks are available on Ebay, good price, same as the V7 Sport but  a little newer with the updated sticker, and the spring fittings are the more modern type, same length and body as the originals, no springs though. I bought  a pair and then found these original vintage ones.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05219_zpsunegu8ks.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05219_zpsunegu8ks.jpg.html)

Waiting for a set of reproduction decals to come in from Cycle Garden and the spring fittings to get re-plated.

Title: Re: 750S Rebuild merged
Post by: smdl on February 28, 2016, 06:57:51 AM
Beautiful work, Jim!

Shaun
Title: Re: 750S Rebuild merged
Post by: canuck750 on March 05, 2016, 09:38:22 PM
Transmissions, not much to them, just three shafts, some gears, bearings, forks to slide up and down, gears move into play, putting it back together should be a sinch, but it never is

Easy stuff, reinstall the big bearing retainers

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05230_zpsijl5hewv.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05230_zpsijl5hewv.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05231_zpsbid6jig4.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05231_zpsbid6jig4.jpg.html)

The shift drum rod was all corroded, this transmission sat in a swamp! HMB provided a new one

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05232_zps5rgfa90u.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05232_zps5rgfa90u.jpg.html)

Pete Ropers excellent tutorial was consulted to shim the drum

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05233_zpsq2ujqctm.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05233_zpsq2ujqctm.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05234_zpsbjc5ddkz.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05234_zpsbjc5ddkz.jpg.html)

Easy enough, now I have torn apart four of these 5 speed buggers but never bothered to record how and in what order to put the shafts back in

New bearing pack here, and don't forget the thick shim as well

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05238_zpskl3xmvgq.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05238_zpskl3xmvgq.jpg.html)

Warm up the bearing so the main shaft can drop in

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05243_zpsewdv7mji.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05243_zpsewdv7mji.jpg.html)

Then the two gear clusters go back in as a unit, followed by two selector forks and then the drum and shaft

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05244_zps98hrjxiz.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05244_zps98hrjxiz.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05267_zps6hyrfjgf.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05267_zps6hyrfjgf.jpg.html)

This is a bugger, you need to pull the lower selector fork up to get it to engage in the drum, the drum needs to be in 1st gear position so that the selector mechanism can drop over the recess in the drum as the case cover is installed as a unit

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05248_zps1ce1akni.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05248_zps1ce1akni.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05260_zpsyiludirh.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05260_zpsyiludirh.jpg.html)

once the two lower selectors are engaged with the drum the top selector fork can drop in and then fit the shaft through all three forks and that part is done, It helps to rotate the case around to keep the selector fork pins heal in position by gravity

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05260_zpsyiludirh.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05260_zpsyiludirh.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05264_zpsj3njyp8n.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05264_zpsj3njyp8n.jpg.html)

Case cover back on, takes some shaking and massaging but don't force it

Push rod bits go back on

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05276_zps4vqkeyu1.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05276_zps4vqkeyu1.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05278_zpsnervfnr2.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05278_zpsnervfnr2.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05277_zpssao7xmeu.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05277_zpssao7xmeu.jpg.html)

New splined hub, lock washer and nut

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05275_zps8t8yucwo.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05275_zps8t8yucwo.jpg.html)

Other end, the speedo retaining ball bearing, drive gear, washer and the nut

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05272_zpsjvjqyl0q.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05272_zpsjvjqyl0q.jpg.html)

Hold the hub and torque the output nut

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05273_zpswugjotni.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05273_zpswugjotni.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05274_zpsc2crxxu3.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05274_zpsc2crxxu3.jpg.html)

Done, engines are easy, transmissions can test ones patience

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05280_zps0crx6mjx.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05280_zps0crx6mjx.jpg.html)







Title: Re: 750S Rebuild merged
Post by: smdl on March 05, 2016, 09:55:35 PM

I can't see any marks on the cam, guessing it is stock. I want to fit a B10 cam in this bike and may just send the cam to Colt Cams. I think Colt made up the B10 cams that MG Cycle were selling.

Hi, Jim.

Yes, I can confirm that Colt Cams does the re-grind for B10 cams that MG sells.  I checked with Rick and Gordon, and they didn't have any issue with my working directly with Colt Cams as they are in Canada and so am I.  It really didn't make sense to send my core to MG in the US so they could send it to Colt in Canada for a re-grind, so Colt could ship back to the US, so MG could send back to me in Canada.  :grin:  Colt got it done and back to me quite quickly.

Cheers,
Shaun

PS:   I think that MG Cycle has the exclusive distributorship for Colt in the US.
Title: Re: 750S Rebuild merged
Post by: canuck750 on March 05, 2016, 11:31:48 PM
Hi Shaun

I spoke with Colt last week, they were OK sending my cam direct, I mailed it off last week. I dropped my crank off at the machine shop on Thursday, it needs 1st over cuts on the mains. Hopefully I can get the engine back together in a couple weeks. I would like to ride the 750S this summer!
Title: Re: 750S Rebuild merged
Post by: smdl on March 06, 2016, 11:30:29 AM
Glad it worked out.

Cheers,
Shaun
Title: Re: 750S Rebuild merged
Post by: canuck750 on March 08, 2016, 07:34:02 PM
Colt Cams called yesterday to tell me the cam I sent is not stock, it has no marks and does not match any Guzzi specs, HMB confirmed that the specs Colt gave me is that its a custom cam, lots of intake lift 330thou and 280 for the exhaust, HMB does not care for the profile, neither do Colt. I probably need to fork out for a new cam.

Small progress back in the garage, rear brakes. I had the cam pivots replated and soda blasted the back plate

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05226_zpsexpfgjek.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05226_zpsexpfgjek.jpg.html)

My home made shoe spreader has come in very handy over the years

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05227_zpstvy2nfyp.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05227_zpstvy2nfyp.jpg.html)

One shoe had a blob on the casting, neede to grind it round to fit the back plate pin

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05228_zpsgtmjyygt.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05228_zpsgtmjyygt.jpg.html)

A pair of new springs and that's done

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05229_zps5roeaagj.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05229_zps5roeaagj.jpg.html)

I took the frame and swing arm in for powder coating and the T3 lower triple and stem came in from Harpers today,

Thanks Curtis!
Title: Re: 750S Rebuild merged
Post by: Antietam Classic Cycle on March 08, 2016, 08:36:12 PM
Colt Cams called yesterday to tell me the cam I sent is not stock, it has no marks and does not match any Guzzi specs, HMB confirmed that the specs Colt gave me is that its a custom cam, lots of intake lift 330thou and 280 for the exhaust, HMB does not care for the profile, neither do Colt. I probably need to fork out for a new cam.

As I mentioned before, Delta Camshaft has specs. for all the Guzzi cams and can grind whatever you send them to whatever spec. you desire. Worth checking out.
Title: Re: 750S Rebuild merged
Post by: canuck750 on March 08, 2016, 10:22:34 PM
As I mentioned before, Delta Camshaft has specs. for all the Guzzi cams and can grind whatever you send them to whatever spec. you desire. Worth checking out.

Thanks Charlie, Colt grinds the cams for MG Cycle and they have all the factory Guzzi specs. Apparently the cam I sent to Colt has profiles such that there is insufficient hardened steel to cut the B10 profile. This is what HMB was able to tell me based upon the measurements from Colt:

 "surely this is no stock cam. Asymmetrical lift was only done by Bruno Scola, his cams are known to be noisy and not very long lasting.
 Missing marks are a second sign for it not being a stock cam.
 And, it could have been  ground from a P3 cam, as the P3 base a larger base circle."

The 750S I am rebuilding was a wreck survivor and the previous owner must have been experimenting with horse power before the bike was passed on and ended up here in Canada.

I think I need to go look for a B10.
Title: Re: 750S Rebuild merged
Post by: canuck750 on March 10, 2016, 08:15:27 PM
The 750 S uses a grey plastic CEV fuse box, hard to find in the correct colour. CEV fuse boxes were also used on the Benelli 650 and Moto-Morini 3 1/2.

I found a decent Beneli fuse box but it does not have the same number of fuse holders so I made some from .030 brass strips.

I drill out the rivets on the bask to remove the clear cover then drill out all the rivets holding the brass strips. Clean all the corrosion off the original brass strips.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05285_zpsoakjcsed.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05285_zpsoakjcsed.jpg.html)

I bought a 6" shear being cleared out for under $50.00 a piece, great deal

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05286_zpsvogmrm0v.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05286_zpsvogmrm0v.jpg.html)

Then made replica strips

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05287_zpsolbs4ate.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05287_zpsolbs4ate.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05288_zpsz1zhaszg.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05288_zpsz1zhaszg.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05289_zpsakrp6kdr.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05289_zpsakrp6kdr.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05294_zpszv28re29.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05294_zpszv28re29.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05295_zpsatzqmrhf.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05295_zpsatzqmrhf.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05296_zpsf5hwd6s2.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05296_zpsf5hwd6s2.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05297_zpspad4njiw.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05297_zpspad4njiw.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05298_zpsocipbvd4.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05298_zpsocipbvd4.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05301_zpsykyckdo6.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05301_zpsykyckdo6.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05302_zpsd7t1g2pg.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05302_zpsd7t1g2pg.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05304_zpsf7ahilvp.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05304_zpsf7ahilvp.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05303_zpskzctuwef.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05303_zpskzctuwef.jpg.html)

Powder coating finished today, engine next

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05305_zpshlkojtmh.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05305_zpshlkojtmh.jpg.html)
Title: Re: 750S Rebuild merged
Post by: canuck750 on March 15, 2016, 10:05:42 PM
Waiting on the crank grind, I can get some small stuff back together, easier to install some of the electrical before the engine joins the frame.

Gregory Bender supplied a complete wire harness with all the sub-harness items.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05307_zps9mlbslq8.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05307_zps9mlbslq8.jpg.html)

I found that installing the high tension leads into the coils prior to mounting them is much easier to do than trying to twist the wire into the coil mounted on the frame.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05313_zpsys5zwpu2.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05313_zpsys5zwpu2.jpg.html)

And fitting the rectifier, regulator and the wire terminal block is straight forward when there is room fit hands into the tight spaces

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05309_zpshewoe51q.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05309_zpshewoe51q.jpg.html)

And the lower triple is repaired thanks to Harper's supplying a new stem, the repro damper rod comes with a nice stainless steel base plate

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05311_zpsqqojsqlp.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05311_zpsqqojsqlp.jpg.html)

This is my therapy and returning old bikes to the street drops my blood pressure like nothing else.
Title: Re: 750S Rebuild merged
Post by: nobleswood on March 16, 2016, 07:03:13 AM
 :bow:   :popcorn:
Title: Re: 750S Rebuild merged
Post by: Rick4003 on March 16, 2016, 07:21:15 AM
  :1:
:bow:   :popcorn:

You have really shown how great it is to be able to powder coat at home! I have to get me one of those guns!  :grin:

And amazing job as usual!
Title: Re: 750S Rebuild merged
Post by: canuck750 on March 16, 2016, 06:26:50 PM
For $149.00 Eastwood Automotive supplies a complete kit, powder gun, sample powders, and silicone plugs.

http://www.eastwood.com/powder-gun-promo-kit.html

Or this one for $70.00 at Harbor Freight, and Harbour freight stocks a few colours of powder.

http://www.harborfreight.com/10-30-psi-powder-coating-system-94244.html

High heat masking tape is handy

http://www.eastwood.com/high-temp-fiberglass-masking-tape.html

You will need a clean and dry source of compressed air, only 2 ~ 5 lbs pressure, a small cheap regulator attached to your powder gun works great.

For baking look for a large used toaster oven, if you have the room get a hold of an old surplus wall mounted oven, I have found two for free over the years by searching the local small adds, people are always renovating kitchens and usually the owner just wants to get rid of the oven.

An infrared thermometer is handy to gauge the temperature of your parts as they cure in the oven, most powder is cured at 375 degrees F.

$34.00 from Harbor Freight.

http://www.harborfreight.com/non-contact-infrared-thermometer-with-laser-targeting-61894.html

Your parts need to be clean, rust free, all old paint removed. A wire wheel in a bench grinder does wonders.

Prior to spraying the powder I wash the parts with acetone.

I lay a sheet of thin polyethylene on the garage floor and up the overhead door, taped to the overhead door. Then I set up a step ladder to one side and fit a length of steel tube from the ladder step to hang the parts off to powder coat. I hang the parts from stainless steel wire that I then transfer the parts to the oven to let the powder cure. The parts hang from the top rack in the oven.

I pull up the plastic with the loose powder and throw it all in the garbage when done.

Clean up is just sweeping up the residue powder

It is so easy and mess free that once you get started you will not go back to rattle cans again.




Title: Re: 750S Rebuild merged
Post by: balvenie on March 16, 2016, 06:39:17 PM
Beautiful :grin:
Title: Re: 750S Rebuild merged
Post by: canuck750 on March 16, 2016, 10:32:55 PM
Like the old saying goes you learn something new every day, fitting the triple clamps and forks I go looking for the ignition switch lock plate that fits beneath the upper triple clamp... except there isn't one with this bike.

The 750S being a 1974 model (V7Sport in North America), the steering lock is reported to be identical to the V7 Sport using the ignition switch drop pin as the lock. But on this bike there is a frame mounted steering lock like the 850T and later Tonti frame bikes. The serial number stamped into the frame is clearly a 750S and the underside of the triple has the indent to take the lock plate. So to reduce the gap between the top of the upper bearing cap and the triple I made up a spacer equal in thickness to the lock plate.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05314_zpsf9z27kjd.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05314_zpsf9z27kjd.jpg.html)

In go the forks, the swan necks and the head light brackets

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05315_zpsbuqkt0n5.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05315_zpsbuqkt0n5.jpg.html)

A few more bits and pieces back together, if I squint it's starting to resemble a motorcycle, well maybe not yet.....

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05317_zpsjrrbw0qy.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05317_zpsjrrbw0qy.jpg.html)
Title: Re: 750S Rebuild merged
Post by: canuck750 on March 17, 2016, 09:52:03 PM
The machine shop called to say the crank grind is done, perfect!

I am lucky to have such a great machine shop in my town, these guys build race engines and have been at it for decades

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05318_zpspt4frg3x.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05318_zpspt4frg3x.jpg.html)

And they balanced the rods too

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05322_zpspvxaljsp.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05322_zpspvxaljsp.jpg.html)

Swap out the oil tubes from  he old bearings

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05320_zpsxzxnfekw.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05320_zpsxzxnfekw.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05321_zpstw9wwqc6.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05321_zpstw9wwqc6.jpg.html)

Lock a new sludge trap plug into the crank

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05319_zpsgsb0o4hy.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05319_zpsgsb0o4hy.jpg.html)

Fit the new front bearing, torque down the six bolts and lock the tabs over the bolts

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05324_zps7w7f2qiu.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05324_zps7w7f2qiu.jpg.html)

Fit a new rear main gasket with just a trace of sealant on the bottom half, heat up the block and fit two studs in to guide the bearing in

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05325_zpspsobck49.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05325_zpspsobck49.jpg.html)

Then tabs,, torque the bolts and thread sealant on the two bottom bolts

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05326_zpsmayqi4i3.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05326_zpsmayqi4i3.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05327_zpsxmbpmk4e.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05327_zpsxmbpmk4e.jpg.html)

A new rear seal oiled up and then pressed in with a special tool

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05328_zpseanzmgdw.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05328_zpseanzmgdw.jpg.html)

Fit the breather pipes

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05329_zpsip7lyjeq.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05329_zpsip7lyjeq.jpg.html)

Fitted new shells, rod bolts and nuts and then torque in the rods

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05332_zps3umwvx0b.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05332_zps3umwvx0b.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05333_zpskly2eqa4.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05333_zpskly2eqa4.jpg.html)

And the new B10 cam came in the mail today from John, thanks mate!

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05334_zps64bnfqxj.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05334_zps64bnfqxj.jpg.html)

Hopefully the heads will be ready by Saturday and I can button the engine up this weekend.

Title: Re: 750S Rebuild merged
Post by: balvenie on March 17, 2016, 10:08:39 PM
Love it. You could sell tickets :grin:
Title: Re: 750S Rebuild merged
Post by: canuck750 on March 17, 2016, 10:19:11 PM
Love it. You could sell tickets :grin:

Glad to share my gearhead porn!

If anyone has a NEW oil pump for sale to fit a V7 Sport / Eldorado please send me a pm, I am having a tough time finding one 4 sale.

PS - Some on-line venders advertise the 750S oil pump as being equal to the T3 but the 750S is the same as the V7 Sport.
Title: Re: 750S Rebuild merged
Post by: ailgev on March 20, 2016, 05:54:42 PM
Hey Jim,

Love your work and detail.
I just noticed on your gearbox that a couple of he bearings you have installed from the HMB kit look like they have polymid cages.
I recently bought a N303 bearing from HMB and received the same one (polymid caged).
Im not sure if Im going to use it as I removed a couple which had cracked plastic cages and the balls were about to let loose in the box.
Michael says that the polymid are different than original plastic caged ones Guzzi used and are better than the steel caged ones.

Are these ones different than the original plastic caged bearings do you know?

Paul.
Title: Re: 750S Rebuild merged
Post by: smdl on March 20, 2016, 06:00:54 PM
Fantastic work, Jim!  I'm really enjoying this one.

My progress is slower, but there is some.  Will have another update soon.

Cheers,
Shaun
Title: Re: 750S Rebuild merged
Post by: canuck750 on March 20, 2016, 06:44:07 PM
Hey Jim,

Love your work and detail.
I just noticed on your gearbox that a couple of he bearings you have installed from the HMB kit look like they have polymid cages.
I recently bought a N303 bearing from HMB and received the same one (polymid caged).
Im not sure if Im going to use it as I removed a couple which had cracked plastic cages and the balls were about to let loose in the box.
Michael says that the polymid are different than original plastic caged ones Guzzi used and are better than the steel caged ones.

Are these ones different than the original plastic caged bearings do you know?

Paul.

Hi Paul,

I was disappointed to find the bearings had the polymer cages, HMB assured me these new bearings are top quality and not the same as the earlier plastic caged bearings, I am trusting the experts on this one.
Title: Re: 750S Rebuild merged
Post by: canuck750 on March 20, 2016, 07:02:08 PM
Fantastic work, Jim!  I'm really enjoying this one.

My progress is slower, but there is some.  Will have another update soon.

Cheers,
Shaun

Any progress is still progress! Your 750S tribute is going to be a very cool bike!

I spent most of the weekend in the office, damn work keeps getting in the way of important things, like engine assembly,

I got a couple hours in this afternoon,

Stripped and cleaned the oil delivery pipe and pressure release valve

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05336_zpsnuzkvdrm.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05336_zpsnuzkvdrm.jpg.html)

My home made pressure tester indicates valve opening at just over 55 psi, within spec so that's good

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05339_zpspdgerlzt.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05339_zpspdgerlzt.jpg.html)

I re-measured the oil pump.one shaft is good, the other one is just a couple thou under so due to no new ones available I am going to use this one and fit a pressure gauge, worst case I will need to replace it but |I can do that with the engine in the frame, I used a liberal pasting of assembly lube on everything that rotates

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05340_zpsidt0olab.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05340_zpsidt0olab.jpg.html)

In goes the pump. pick up screen and oil tube

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05341_zps8f7icnfa.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05341_zps8f7icnfa.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05343_zps7pjcrm9t.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05343_zps7pjcrm9t.jpg.html)

I salvaged all the sheet steel tabs and had them zinc plated

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05349_zpsyj1dfdkv.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05349_zpsyj1dfdkv.jpg.html)

Bend over and peen the lock tabs

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05350_zpsvdxc1qc4.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05350_zpsvdxc1qc4.jpg.html)

I measured the cam I got in the mail this week, it checks out to be a B-10, consistent lift on all 4 lobes, a coating of assembly lube

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05345_zpsuhepzisk.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05345_zpsuhepzisk.jpg.html)

Some locktite and shnoor wwashers

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05346_zpscbpg5uid.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05346_zpscbpg5uid.jpg.html)

Cam is back in with a new thrust bearing

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05348_zpste0tqjov.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05348_zpste0tqjov.jpg.html)

Alloy gear set goes back on with new hardware

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05352_zpspt2dfqkh.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05352_zpspt2dfqkh.jpg.html)

A brass rod machined to the small end bush diameter safely hold the crank in place and the special tool is bolted tight to the crank shaft end

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05353_zpsygrycnrw.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05353_zpsygrycnrw.jpg.html)

Torque the crank nut on and bend over the lock tab

Then fit the cam sprocket, align the marks, hold the crank steady and torque the cam shaft nut

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05354_zpsjvw7g2eb.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05354_zpsjvw7g2eb.jpg.html)

Lube the cam followers and drop them into the block

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05356_zps2oqae6pd.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05356_zps2oqae6pd.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05357_zpsztr1jiyr.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05357_zpsztr1jiyr.jpg.html)

Install new base gaskets and O rings at 6 and 12 o'clock

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05359_zpspdzyhjxw.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05359_zpspdzyhjxw.jpg.html)

Heat the pistons, fit the pins to the rods and install new clips

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05360_zps0sf2slgs.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05360_zps0sf2slgs.jpg.html)

Oil the piston and rings, Compress the rings

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05362_zpsbpi0omnj.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05362_zpsbpi0omnj.jpg.html)

Drop the cylinders on

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05363_zpsu7jkhmzf.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05363_zpsu7jkhmzf.jpg.html)

That's all for now, waiting on heads to come back from the machine shop

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05364_zpsnxfix0m9.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05364_zpsnxfix0m9.jpg.html)


Title: Re: 750S Rebuild merged
Post by: balvenie on March 20, 2016, 10:42:06 PM
Great :grin:
Title: Re: 750S Rebuild merged
Post by: canuck750 on March 24, 2016, 07:30:01 PM
Working on these old machines with an unclear history, previously modified, rebuilt etc, can be very confusing, it's a bit of archeology and some detective work. The 750S, at least the engine in this one did not come with an oil filter, the engine appears to be identical to the V7 Sport engines I have rebuilt. Some literature claims that the 750S came with a timing chain as opposed to gears, this is plausible for this motor as it now wears aluminum timing gears and no chain. All of that said, the oil pump in the V7 Sport is the same as the Eldorado and I assumed that this motor would use the same non oil filter pump.

I could not find a new V7 Sport / Eldorado pump for sale so opted to risk reinstalling the slightly worn original. After I reinstalled the original pump I realized it is not the same as the ones in the V7 Sport. I found it mnatches this one, designed for the 850 T3 an onward.

http://hmb-guzzi.de/Oil-Pump-Cali-1100-V11-etc

So I have ordered one of these to fit into the 750S and now I am questioning if the oil pump I have in the 750S motor is correct? Perhaps it is or maybe the previous owner installed this later model oil pump along with the timing gear set and Giladorni pistons when the bike was rebuilt in the 90's.

If anyone can verify what is the correct pump for the 750S and more importantly is there any problem using this 850T3 type pump in a non oil filter engine????

PS, thanks to Dick for sending me a shift drum detent and spring, Guzzi people are fantastic!
Title: Re: 750S Rebuild merged
Post by: Antietam Classic Cycle on March 24, 2016, 08:17:07 PM
If anyone can verify what is the correct pump for the 750S and more importantly is there any problem using this 850T3 type pump in a non oil filter engine????

I used this pump:
http://www.mgcycle.com/index.php?main_page=product_info&cPath=68_162&products_id=1985
in a non-filter Eldo engine, works perfectly. Don't know if that helps?
Title: Re: 750S Rebuild merged
Post by: canuck750 on March 24, 2016, 08:20:19 PM
Thanks Charlie!

It's good to know using this type of pump will function properly in a non filter engine.

Jim
Title: Re: 750S Rebuild merged
Post by: canuck750 on March 26, 2016, 06:39:02 PM
waiting on parts again I stripped the chrome steel rims that the bike came with when I got it, (I have replaced the rims with the correct Borrani aluminum wheels), this is what lies beneath that shiny chrome rim

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05367_zps8ukila2z.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05367_zps8ukila2z.jpg.html)

The corrosion is very deep in many places, junk rims that on the outside looked pretty good!

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05368_zpskpk3375p.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05368_zpskpk3375p.jpg.html)

Even the front one that had a pretty new looking tire has its spots of rot

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05369_zpsfmgk4oi2.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05369_zpsfmgk4oi2.jpg.html)

From the receipts that came with the bike these chrome steel rims were installed in the mid 90's and as was evident by so many other tell tale signs during the disassembly this poor unloved beast spent many a night out in the damp and probably salt air.

Even after some cleaning with a ire brush the rot only goes deeper

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05370_zps8hgbckit.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05370_zps8hgbckit.jpg.html)

Moral of the story is old steel rims, even if they look OK should be inspected, the alternative could be disastrous on the road at speed!




Title: Re: 750S Rebuild merged
Post by: canuck750 on April 11, 2016, 10:09:12 PM
I broke down and bought a new oil pump, having gone in so deep once again I just couldn't leave a borderline part in the engine. The new one came in today so I swapped the new one in.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05372_zpsrmbocmw0.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05372_zpsrmbocmw0.jpg.html)

The machine shop finished the head rebuild today, new valves, springs, valve grind.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05374_zps6co6bxwd.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05374_zps6co6bxwd.jpg.html)

Some new hardware and O rings and the heads are back on

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05373_zps7hvank5x.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05373_zps7hvank5x.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05375_zpsn4g9cr90.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05375_zpsn4g9cr90.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05378_zpsyx5z3rtw.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05378_zpsyx5z3rtw.jpg.html)

Pan back in place

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05379_zpsnv2avejq.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05379_zpsnv2avejq.jpg.html)

and some new hoses, crush washers and clamps

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05380_zpscww8gwrb.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05380_zpscww8gwrb.jpg.html)

now just to check the timing with a degree wheel and assemble the flywheel and clutch

Next is a diversion back to my Eldorado, still a slow oil leak out the back of the engine from the bellhousing, I am guessing the oil vent tube sealing washers are not, sealing that is, probably 50 cents in parts and an 8 hour job to pull the transmission, clutch etc to find that damn little leak, I lived with it all last year but it's time to do try and get it solved once and for all.

Title: Re: 750S Rebuild merged
Post by: Air-Cooled on April 12, 2016, 12:01:26 AM
I seem to recall that Mick Walker's book on Guzzi stated that all 750S bikes were chain, no more gears after the V7 Sport and Eldorado.
Title: Re: 750S Rebuild merged
Post by: canuck750 on April 13, 2016, 09:54:29 PM
I seem to recall that Mick Walker's book on Guzzi stated that all 750S bikes were chain, no more gears after the V7 Sport and Eldorado.

I recall reading the same thing, these are aluminum cam and oil pump gears, the crank gear is steel.

I moved the engine over to the lift but first I bolted the engine stand down to the lift, almost tipped the last one over by mistaje and I don't need to risk that again.

Fitting the flywheel, I remembered to paint the end of the crank and flywheel before disassembly to be sure I reinstalled the flywheel in the correct position

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05382_zpsuqkcfmki.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05382_zpsuqkcfmki.jpg.html)

New lock tabs and bolts and some locktite then torque it down to the crank

I don't know if this is good practice but I glued the clutch springs into the flywheel to keep them in position

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05384_zpsnaygolom.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05384_zpsnaygolom.jpg.html)

Then fitted the clutch components

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05385_zpsjg9fel1p.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05385_zpsjg9fel1p.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05386_zpsydazw5pi.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05386_zpsydazw5pi.jpg.html)

and then the plug

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05387_zps7yged7cy.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05387_zps7yged7cy.jpg.html)

and that's done

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05388_zpsk7hmklyd.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05388_zpsk7hmklyd.jpg.html)
Title: Re: 750S Rebuild merged
Post by: canuck750 on April 23, 2016, 12:30:12 PM
As I have stated many times, 'I an not a mechanic', more of a parts replacer with a lot of tools and the audacity to plow into anything that makes up a motorcycle.

The preface of this update is to admit to another lesson learned, albeit the hard way, ...again, ...which is my usual means of education :cry:.

After assembling the engine, clutch, mating the transmission and fitting the valve gear I was checking the valve timing with a dial gauge to verify intake opening as per the factory specs. Now the crank has been rotating as smooth as could be expected with a fresh grind and new bearings and big end shells, spins effortlessly with the heads off. The cam is opening the intake at the right time as measured by a degree wheel and verified by a dial gauge. All is well as I spin the crank with a hex head socket into the rotor bolt... and then its starts to get stiffer, very, very stiff and then the crank shaft just locks up.

hmmm, this is strange, removed the rockers and push rods, no better, still the crank shaft will not rotate. Separate the transmission, still no change. Remove the clutch / flywheel nothing.

Ok so its back to stripping the motor, timing gears removed, no change, cam spins, oil pump spins... crank is stuck.

Remove the pistons and rods, nothing that leaves one or both of the main bearings.

Pulled the rear bearing nope still stuck, damn it's the front main bearing.

I had to use a block of wood and some gentle persuasion to separate crank from bearing and the soft main bearing is ruined. A residue of soft white metal needs to be polished of the front of the crank.

Sorry for the long winded report, but the conclusion is I had not checked if the crank shaft oil passage openings had been chamfered after grinding and not leaving a sharp edge to catch on a bearing, which appears to be the cause to the instantaneous destruction of the front main bearing from a couple of rotations by hand. Had I attempted to start the engine I am sure the result would have been a seizure and soft white metal strewn all about the internals of the motor. It will cost me a new front main bearing and a couple days to put it all back together and set the timing, clutch, etc, back up.

Now to take a good look at the crank oil passage openings and make sure the edges of the openings have no burrs or ridges.

And that is my lesson for the week. :violent1:



Title: Re: 750S Rebuild merged
Post by: smdl on April 23, 2016, 12:52:22 PM
Ugh!  Sorry to hear it, Jim.  I can fully appreciate the whole "learning motorcycle mechanics through (painful) experience" thing.  Oh, well, your future builds will be that much better for having learned this valuable lesson.

My recent lesson was not to be an idiot and slip/fall on the very last really cold day of the year, and just before real riding weather starts.  Your issue is much more forgivable!   :grin:

Cheers,
Shaun
Title: Re: 750S Rebuild merged
Post by: canuck750 on April 24, 2016, 07:55:44 PM
I hope you are mending well Shaun, summer is just around the corner time to ride.

I crabbed my Eldorado today and pulled the transmission to locate the slow steady drip of engine oil out the bottom of the bellhousing, looks like the breather tube crush washers were not sealing. In the process of pulling the tranny I had to remove the header pipes but one of the threaded exhaust header clamps is seized, probably cross threaded as it turned with much resistance but is now stuck, I had to remove the head with the header as a unit to tip the motor forward. Why is it that every small job, in this case a couple of cheap crush washers leads to a potential head replacement and who knows what else??

I need to lock the head in a vice and try to get the header clamp off without wrecking the head threads, any ideas?

Cheers
Jim
Title: Re: 750S Rebuild merged
Post by: Hymes Inc. on April 24, 2016, 08:21:40 PM
I drilled out, welded up, drilled, and tapped all 4 of my exhaust studs. With my heavier header ends I didn't like the 6mm studs and didn't have room for 8mm so I made them 5/16. Was able to do it on the bike.
Title: Re: 750S Rebuild merged
Post by: canuck750 on April 24, 2016, 09:20:02 PM
I drilled out, welded up, drilled, and tapped all 4 of my exhaust studs. With my heavier header ends I didn't like the 6mm studs and didn't have room for 8mm so I made them 5/16. Was able to do it on the bike.

Did you use the 850T / T3 type exhaust header clamps?
Title: Re: 750S Rebuild merged
Post by: Don G on April 25, 2016, 08:59:41 AM
Canuck: You may be able to bolt it down to the end of a work bench by drilling a couple of holes in the bench and using some long bolts, that would be better than squishing it in a vice. DonG
Title: Re: 750S Rebuild merged
Post by: smdl on April 25, 2016, 10:36:03 AM
I hope you are mending well Shaun, summer is just around the corner time to ride.

I crabbed my Eldorado today and pulled the transmission to locate the slow steady drip of engine oil out the bottom of the bellhousing, looks like the breather tube crush washers were not sealing. In the process of pulling the tranny I had to remove the header pipes but one of the threaded exhaust header clamps is seized, probably cross threaded as it turned with much resistance but is now stuck, I had to remove the head with the header as a unit to tip the motor forward. Why is it that every small job, in this case a couple of cheap crush washers leads to a potential head replacement and who knows what else??

I need to lock the head in a vice and try to get the header clamp off without wrecking the head threads, any ideas?

Cheers
Jim

Oh, no!  Sorry to hear about your situation, Jim.  I hate when a straightforward job snowballs into a more complex and difficult one.

I like Don's idea of bolting the head to a soft wooden bench top.  I'd also be inclined to try some heat on the aluminum of the head to see if that helps, and maybe a drift or chisel on the nut if a wrench just won't work.  Beyond that, it would likely be down to sacrificing the head pipe and trying to grind away the nut without damaging the head.  Once removed, a machine shop should be able to put an insert in, if you really want to save that head.  I might look at costs to replace the head before getting to that stage, though.

I have limited experience with this particular issue, so others might very well have better suggestions.

Best of luck with it, and please let us know how it works out.

Shaun
Title: Re: 750S Rebuild merged
Post by: canuck750 on April 25, 2016, 08:36:43 PM
Canuck: You may be able to bolt it down to the end of a work bench by drilling a couple of holes in the bench and using some long bolts, that would be better than squishing it in a vice. DonG

Good idea Don! I will bolt the heads to my work bench and see is some serious leverage can break through the bind.

Jim
Title: Re: 750S Rebuild merged
Post by: Hymes Inc. on April 25, 2016, 11:07:20 PM
Did you use the 850T / T3 type exhaust header clamps?
  I used the stock V65 clamps, but I got ride of the 2 piece mess that pressed against the very thing flange at the end of the header. I made a solid steel piece that was the same diameter as the flange and stepped it out to match the clamp ring. Cut the flange off, slid my piece over the end of the header and welded it on. So far it seems to be the cats meow, but time, and miles, will tell. I did all of this because I kept breaking the little flange off the end of the header.
Title: Re: 750S Rebuild merged
Post by: canuck750 on April 26, 2016, 08:49:59 PM
I followed Don's suggestion, drilled two holes through my steel work bench and through bolted the head to the table. It took a five foot section of pipe over a big pipe wrench to get the nut off

(http://i249.photobucket.com/albums/gg217/canuck750/1972%20Moto%20Guzzi%20850%20Eldorado/DSC05405_zps96jcatfl.jpg) (http://s249.photobucket.com/user/canuck750/media/1972%20Moto%20Guzzi%20850%20Eldorado/DSC05405_zps96jcatfl.jpg.html)

The outer 1/8" of the head threads came off with the nut

I have the correct tap and managed to save enough of the threads to get a new nut to seat

(http://i249.photobucket.com/albums/gg217/canuck750/1972%20Moto%20Guzzi%20850%20Eldorado/DSC05402_zpsigxgmnns.jpg) (http://s249.photobucket.com/user/canuck750/media/1972%20Moto%20Guzzi%20850%20Eldorado/DSC05402_zpsigxgmnns.jpg.html)

I am relieved that the head was not destroyed.

Now back to assembling the 750S motor
Title: Re: 750S Rebuild merged
Post by: smdl on April 26, 2016, 09:01:14 PM
Well done, Jim!

Shaun
Title: Re: 750S Rebuild merged
Post by: keener on April 26, 2016, 10:01:19 PM
yes nice work...wondering how it ended up being that tight.............. ...
Title: Re: 750S Rebuild merged
Post by: canuck750 on May 01, 2016, 10:26:02 PM
The bike is starting to come together, building components makes the final assembly relatively easy.

I replaced the front main bearing and filed the crank oil feeds holes to remove any burrs. Then the clutch and transmission joined up.

The swing arm got a new carrier bearing

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05408_zpsv2yhk81u.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05408_zpsv2yhk81u.jpg.html)

and new pivot bearings and seals, the pivot pins, and spacers were zinc plated

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05410_zpskiikxymq.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05410_zpskiikxymq.jpg.html)

New bearing races were pressed into the swingarm

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05409_zpsimkcuwnu.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05409_zpsimkcuwnu.jpg.html)

A new U joint dropped in to the assembly

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05411_zpsudf0y01g.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05411_zpsudf0y01g.jpg.html)

I chased the pivot pin holes in the frame

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05413_zpsfns21d7b.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05413_zpsfns21d7b.jpg.html)

Them I greased the transmission output spline with spline grease I bought from MG Cycle

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05412_zps56imbfpb.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05412_zps56imbfpb.jpg.html)

A new U joint rubber boot and hose clamps finished off the assembly

Then the frame was lowered onto the engine / transmission and the lower frame rails, foot rests and shift mechanism and brake rod fitted.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05414_zpshz5f9mmf.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05414_zpshz5f9mmf.jpg.html)

MG Cycle provided the stainless steel engine to frame bolts

I fitted clip nuts onto the frame to secure the transmission plate

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05415_zpse2bfqkup.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05415_zpse2bfqkup.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05416_zpsekvqxukl.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05416_zpsekvqxukl.jpg.html)

New chrome swing arm caps and rubber plugs, I replaced the foot rest rubbers, hardware etc..

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05417_zpscsevx6r7.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05417_zpscsevx6r7.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05419_zpsvvqpzoa1.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05419_zpsvvqpzoa1.jpg.html)

Then I installed the steering damper and the crash bars

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05421_zpsobbkaihl.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05421_zpsobbkaihl.jpg.html)

And the refurbished side stand with a new spring and replated pivot bolt

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05420_zpsf4fdz15j.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05420_zpsf4fdz15j.jpg.html)

I need to go tire shopping next, maybe something other than the BT45's I have on my other bikes. maybe a set of Avons or Pirellis,

any recommendations??



Title: Re: 750S Rebuild merged
Post by: smdl on May 01, 2016, 10:38:53 PM
Looks great, Jim.

How about Pirelli Sport Demons?  That's what I am putting on mine.

Cheers,
Shaun
Title: Re: 750S Rebuild merged
Post by: canuck750 on May 01, 2016, 10:43:13 PM
Looks great, Jim.

How about Pirelli Sport Demons?  That's what I am putting on mine.

Cheers,
Shaun


I think a Guzzi should wear a nice pair of Italian tires, especially a spot model.

What size of Pirelli do you run on the front and back?
Title: Re: 750S Rebuild merged
Post by: Antietam Classic Cycle on May 01, 2016, 11:13:05 PM

I think a Guzzi should wear a nice pair of Italian tires, especially a spot model.

What size of Pirelli do you run on the front and back?

Usually "Italian" only in name. All of the Sport Demons I've installed in the last five years were made in Brazil.
Title: Re: 750S Rebuild merged
Post by: smdl on May 02, 2016, 08:28:07 AM

I think a Guzzi should wear a nice pair of Italian tires, especially a spot model.

What size of Pirelli do you run on the front and back?

Hi, Jim.

Sorry, I don't recall, at the moment.  Will have a look when I get home.

Cheers,
Shaun
Title: Re: 750S Rebuild merged
Post by: mgmark on May 02, 2016, 09:08:26 AM
  :1: on the Sport Demons. I've used them on a few Guzzis and have always liked them.
Presently I have a 100/90 F and 120/90 R on my LeMans 1 styled bike. This might be a size up from what you want.

Mark
Title: Re: 750S Rebuild merged
Post by: Antietam Classic Cycle on May 02, 2016, 09:08:52 AM
Hi, Jim.

Sorry, I don't recall, at the moment.  Will have a look when I get home.

Cheers,
Shaun

On a V7 Sport, I install a 100/90-18 front and 110/90-18 rear.
Title: Re: 750S Rebuild merged
Post by: canuck750 on May 02, 2016, 10:48:55 AM
On a V7 Sport, I install a 100/90-18 front and 110/90-18 rear.

Thanks Charlie,

I am off to the dealership at lunch to order a pair.

Cheers

Jim
Title: Re: 750S Rebuild merged
Post by: canuck750 on May 02, 2016, 05:45:46 PM
I got a pair of new Perelli Sport Demons for $370 CDN;

100/90-18TL 56H front and a 110/90-18TL 61H rear,

cheaper than the Bridgestone BT 45's and at least they have a cool sounding Italian name!
Title: Re: 750S Rebuild merged
Post by: smdl on May 02, 2016, 06:32:43 PM
I got a pair of new Perelli Sport Demons for $370 CDN;

100/90-18TL 56H front and a 110/90-18TL 61H rear,

cheaper than the Bridgestone BT 45's and at least they have a cool sounding Italian name!

 :thumb:
Title: Re: 750S Rebuild merged
Post by: canuck750 on May 02, 2016, 10:31:58 PM
Some more small jobs, clutch perch mechanism, I powder coated the casting and had the adjuster spindle and lock ring zinc plated, cut down a used spring to replace the one that had gone missing some time and found a ball bearing to fit

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05422_zpsba0efa3c.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05422_zpsba0efa3c.jpg.html)

All goes back together easy enough

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05423_zpst41xdquh.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05423_zpst41xdquh.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05427_zpsd9ceicp4.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05427_zpsd9ceicp4.jpg.html)

The master cylinder casting was powder coated, a rebuild kit was fitted,

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05424_zps3buxmqx8.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05424_zps3buxmqx8.jpg.html)

original cap and bellows, a new pivot bolt and that's done as well

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05426_zpsh5hd43o2.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05426_zpsh5hd43o2.jpg.html)

Repro horns installed

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05425_zpslms1v7gp.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05425_zpslms1v7gp.jpg.html)

And a repro lower mud guard with the signal flasher bracket replated and a new rubber flasher holder

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05428_zpss3alagfe.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05428_zpss3alagfe.jpg.html)

I made up a steel plug to mate the breather hose to the breather hose frame bracket

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05429_zpsgu65csj4.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05429_zpsgu65csj4.jpg.html)

And the last job this evening the starter went back in

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05430_zpsg4xwj6gc.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05430_zpsg4xwj6gc.jpg.html)


Title: Re: 750S Rebuild merged
Post by: canuck750 on May 08, 2016, 10:35:41 PM
Some progress made over the weekend between work, Mother's day diner, etc,

I bought an Eldorado type rear drive off eBay a year ago to replace the Y3 type drive that was fitted to the bike when I got it

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05431_zpsps6wrhwt.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05431_zpsps6wrhwt.jpg.html)

Installed the rebuilt shocks, new brake shoes, springs, seals

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05433_zpsgh6azj6e.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05433_zpsgh6azj6e.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05434_zpse4y6n3lf.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05434_zpse4y6n3lf.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05435_zpsgvrmt4ou.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05435_zpsgvrmt4ou.jpg.html)

The pile of parts is slowly getting smaller and its looking more like a bike
Title: Re: 750S Rebuild merged
Post by: balvenie on May 10, 2016, 03:45:02 AM
Pretty as can be :grin:
Title: Re: 750S Rebuild merged
Post by: canuck750 on May 13, 2016, 10:45:49 PM
Pretty as can be :grin:

Thanks!

I had new brake hoses made today, a local shop builds them while you wait, imagine that! They match the fittings, length etc and use high quality hose, I could use stainless hose but I want to match the stock appearance.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05443_zpscsh9sd9o.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05443_zpscsh9sd9o.jpg.html)

The fittings are a very close match

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05444_zpsqvkrrx2z.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05444_zpsqvkrrx2z.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05445_zpsr0agjcmo.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05445_zpsr0agjcmo.jpg.html)

New banjo bolts and crush washers and a repro rubber boot for the master cylinder fitting

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05447_zpsita70lc1.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05447_zpsita70lc1.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05448_zpsje2olplq.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05448_zpsje2olplq.jpg.html)

I fitted speed bleeders into the rebuilt calipers

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05449_zpsjzp8ucgb.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05449_zpsjzp8ucgb.jpg.html)

I bought a bulk roll of fuel line for the breather hoses

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05450_zpsjgmyryai.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05450_zpsjgmyryai.jpg.html)

And I fitted new NGK spark plug caps and installed the re-plated plug wire guides on the carb bolt, a little grommet fits into the bracket

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05451_zps69uc0lvb.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05451_zps69uc0lvb.jpg.html)

And one more hose for the transmission breather

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05452_zpszl3rgay9.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05452_zpszl3rgay9.jpg.html)

Gauges, headlight and signal lights are fitted, speedo and tach cables installed

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05437_zps5agzutvu.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05437_zps5agzutvu.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05438_zpsf24aqms8.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05438_zpsf24aqms8.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05439_zpsurfigvay.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05439_zpsurfigvay.jpg.html)

A new challenge to figure out; the re-plated handle have the chrome over built so that the throttle tube will not slide over the handle bar. I thought of boring out the throttle tube but I don't think there is enough thickness in the tube for that to be viable.

Now how to grind down the chrome evenly so that the throttle tube fits???




Title: Re: 750S Rebuild merged
Post by: canuck750 on May 19, 2016, 10:05:40 PM
Breath in

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05455_zpse0fy41ew.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05455_zpse0fy41ew.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05456_zpscz3j70q1.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05456_zpscz3j70q1.jpg.html)

Breath out

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05453_zpsrnxzh68g.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05453_zpsrnxzh68g.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05454_zps3m3sll8u.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05454_zps3m3sll8u.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05460_zpshmaw5pj2.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05460_zpshmaw5pj2.jpg.html)



Title: Re: 750S Rebuild merged
Post by: smdl on May 19, 2016, 10:16:10 PM
 :thumb:
Title: Re: 750S Rebuild merged
Post by: Muzz on May 20, 2016, 12:45:43 AM
Just too purty for words. Sheer art! :thumb:
Title: Re: 750S Rebuild merged
Post by: balvenie on May 20, 2016, 04:56:56 AM
Just too purty for words. Sheer art! :thumb:

Yes; I don't know how you can stand to ride it, it's so pristine :grin:
Title: Re: 750S Rebuild merged
Post by: canuck750 on May 20, 2016, 09:31:45 PM
Yes; I don't know how you can stand to ride it, it's so pristine :grin:

Restored bikes are nice to look at but much more enjoyable to ride them. My thoughts are I restored them once I can restore them again. No one would consider buying a new bike to just look at and wouldn't think twice about riding it and getting it dirty and scratched up so why not ride a restored bike? Over the past four years I have chipped the paint in lots of places on my Eldo, getting the fenders repainted this week, no big deal , just time to 'freshen' it up.

I have an original right hand Silentium and a repop left. If anyone has an original shark gill (chrome or black) in great shape for sale please pm me.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05464_zpsbocyc6cn.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05464_zpsbocyc6cn.jpg.html)

Fitted the tool boxes, Guzzi specified rubber washers for many components on these bikes, the big bumpers are for to grasp the battery

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05461_zpszohocebx.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05461_zpszohocebx.jpg.html)

Rubber washer fits between the frame lug and the back of the tool box

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05462_zpsbzngslin.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05462_zpsbzngslin.jpg.html)

And with the locks cleaned and polished up the 750S boxes look pretty sharp

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05465_zpsfjsow8go.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05465_zpsfjsow8go.jpg.html)

Inside of the battery compartment

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05467_zpsugwud1nt.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05467_zpsugwud1nt.jpg.html)

I was not a fan of the 750S tool boxes at first but they are growing on me

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05468_zpsditnkhtr.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05468_zpsditnkhtr.jpg.html)


(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05463_zpsotipvujd.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05463_zpsotipvujd.jpg.html)


Title: Re: 750S Rebuild merged
Post by: Dave Swanson on May 21, 2016, 06:52:27 AM
So good!!!
Title: Re: 750S Rebuild merged
Post by: canuck750 on May 23, 2016, 08:54:28 PM
Thanks Dave|

My new Pirelli's are supposed to arrive this week so it's time to get the wheels ready, fitting bearings and rotors etc,

HMB sells a complete bearing carrier and axle kit, comes with two carriers, two bearings, six bolts with nuts and washers to mount the discs and a new axle, spacers, washer and but. You ,ust use the axle and carriers together as they are different from the stock units and not interchangeable, stainless axle, real nice parts

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05469_zpsgitivqwy.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05469_zpsgitivqwy.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05470_zpsppog8ywc.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05470_zpsppog8ywc.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05472_zps1onmvtt5.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05472_zps1onmvtt5.jpg.html)

The old carriers are quite different, the new ones do not use a circlip

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05474_zps0zwr9ezl.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05474_zps0zwr9ezl.jpg.html)

I had TrueDisc regrind the rotors, the powder coater did not mask the inner opening so the rotor will not fit over the carrier, a sanding wheel quickly removes the baked on powder

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05475_zpsdkha839c.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05475_zpsdkha839c.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05476_zpsnt03ando.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05476_zpsnt03ando.jpg.html)

I fit the new axle through one carrier to align the spacer and then the second carrier and disc

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05477_zpsgpuzaari.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05477_zpsgpuzaari.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05478_zpsljdwkagt.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05478_zpsljdwkagt.jpg.html)

I torqued the rotor bolts to 22 ft lbs and test fitted the wheel and calipers, fits great

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05479_zpsmjh6xrph.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05479_zpsmjh6xrph.jpg.html)

But it is a very tight clearance

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05479_zpsmjh6xrph.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05479_zpsmjh6xrph.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05480_zpsx46n6tzo.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05480_zpsx46n6tzo.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05481_zpslg5hbxah.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05481_zpslg5hbxah.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05483_zpsf88q9r0j.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05483_zpsf88q9r0j.jpg.html)

Rear wheel bearings rely on a shim between the bearing carrier and the spacer, this must be done right with just a wee bit of extra width to keep the bearings just floating on the races

First I opened up a shim I had in the parts bin

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05484_zps9ssepr1m.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05484_zps9ssepr1m.jpg.html)

Now the spacer and shim are a wee bit too long so I shave a few thou off the spacer until its jut the right length

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05485_zpsxmronufa.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05485_zpsxmronufa.jpg.html)

Then grease the bearings and fit new grease seals

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05486_zpsozmjnzwz.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05486_zpsozmjnzwz.jpg.html)

And the wheels are ready for tires and tubes

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05487_zpswiscdhk6.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05487_zpswiscdhk6.jpg.html)









Title: Re: 750S Rebuild merged
Post by: canuck750 on May 29, 2016, 06:57:18 PM
I am lucky to have an original steel base seat that came with this bike, the base is in decent shape but it needs some attention, I don't want to recover it the original vinyl is too nice despite a few nicks

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05489_zpsbmvaljya.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05489_zpsbmvaljya.jpg.html)

Still has the original sticker on the underside

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05491_zpsmz78jwzg.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05491_zpsmz78jwzg.jpg.html)

I used a sanding wheel on an air tool to get the paint and rust off, the paint almost fell off to the touch

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05493_zpsnaq3dz7m.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05493_zpsnaq3dz7m.jpg.html)

I finished off with a soda blast to get the staples clean and then a glass bead to get into the recesses

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05494_zpswaqkxg4f.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05494_zpswaqkxg4f.jpg.html)

Then I used good old Tremclad to recoat the base, two coats

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05495_zps0cfds5ag.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05495_zps0cfds5ag.jpg.html)

When the tremclad dries it shrinks and looks pretty good

New rubbers, the steel sleeves are in good shape

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05497_zpslhyhtktt.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05497_zpslhyhtktt.jpg.html)

Glass beaded the underside of the fender and then painted the steel band black

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05498_zpsupsxqh1d.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05498_zpsupsxqh1d.jpg.html)

Repro knobs

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05500_zpsntqppkph.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05500_zpsntqppkph.jpg.html)

I powder coated a EV light bracket black and fitted the round Euro version of the CEV tail light

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05501_zpsro11fbbq.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05501_zpsro11fbbq.jpg.html)

Aprilia signal lights, my home made repo brackets

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05503_zpsfbeyy4ex.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05503_zpsfbeyy4ex.jpg.html)

The reproduction knobs are too big, they foul on the seat, I need to find another source for these, same problem on my V7 Sport, I used acetone, clean rags, to wipe the seat, keep the rag wet and use a clean fresh rag with each wipe, it will make a 40 year seat look pretty good



(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05504_zpsnmvlmy6k.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05504_zpsnmvlmy6k.jpg.html)

Title: Re: 750S Rebuild merged
Post by: smdl on May 29, 2016, 07:09:12 PM
Looks great, Jim.  Thanks for the info on the repro knobs -- I suppose that's going to be an issue for me, as well.   :cry:

Cheers,
Shaun
Title: Re: 750S Rebuild merged
Post by: canuck750 on May 29, 2016, 07:25:02 PM
Hi Shaun,
I am going to chuck one up in my lathe and see if I can cut the lugs down to fit the space under the seat. Every time I flip up my V7 Sport seat these knobs are a chore to get tight and they are slowly wearing out the cover where it comes into contact with the knobs. If I had some originals I would get repros made out of aluminum on a CNC mill. The originals were missing on my Sport and the S and Luca's bike came with chrome bolts instead of knobs.

Cheers
Jim
Title: Re: 750S Rebuild merged
Post by: Muzz on May 29, 2016, 08:33:27 PM
So Jim, what exactly is Tremclad, purpose etc. Never heard of it out here.
Title: Re: 750S Rebuild merged
Post by: canuck750 on May 29, 2016, 08:48:13 PM
So Jim, what exactly is Tremclad, purpose etc. Never heard of it out here.

Tremclad is a trade name for type of paint, aerosol or brush on, which is advertised as a paint that can be applied directly over rusted steel. Tremclad is slow to cure and remains fairly flexible. For the backside of seats pans, side covers etc, not visible, it makes a good DIY paint. If I was stripping the seat right down I would have blasted all of the pan and powder coated it. In this case its will go a long way to preserving the seat provided I keep the bike stored indoors in dry environment. Despite Tremclad's claims it can be brushed right over rust I prefer to get as much of the rust off as possible.

Cheers

Jim
Title: Re: 750S Rebuild merged
Post by: Antietam Classic Cycle on May 29, 2016, 10:20:27 PM

The reproduction knobs are too big, they foul on the seat, I need to find another source for these, same problem on my V7 Sport, I used acetone, clean rags, to wipe the seat, keep the rag wet and use a clean fresh rag with each wipe, it will make a 40 year seat look pretty good


Good assortment of different types at McMaster-Carr:
http://www.mcmaster.com/#machine-component-knobs/=12mnxc7
Title: Re: 750S Rebuild merged
Post by: Muzz on May 30, 2016, 09:37:07 PM
Thanks Jim. Can't seem to find any references to it in NZ. Found an NZ based site linked to OZ but they won't ship to NZ. :huh:
Title: Re: 750S Rebuild merged
Post by: canuck750 on May 31, 2016, 08:57:51 AM
Good assortment of different types at McMaster-Carr:
http://www.mcmaster.com/#machine-component-knobs/=12mnxc7

Thanks Charlie!
Title: Re: 750S Rebuild merged
Post by: canuck750 on May 31, 2016, 09:59:20 PM
McMaster won't ship to Canada so I decided to try turning down a plastic knob in the lathe, a new tool insert and running at high speed I slowly brought the tool up to the plastic

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05505_zps6nel4rkr.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05505_zps6nel4rkr.jpg.html)

Surprisingly tough stuff that phoenolic plastic, but I turned it down to this

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05506_zpsrzjltrrk.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05506_zpsrzjltrrk.jpg.html)

Easy enough to do and the black phoenolic cuts very smooth so just a touch of polishing on a buffer wheel and they look like they were made this way

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05507_zpski92zoal.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05507_zpski92zoal.jpg.html)

And they now clear the underside of the seat

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05509_zpsou7eowf1.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05509_zpsou7eowf1.jpg.html)

Now to pull the knobs off the V7 Sport and cut them down

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05510_zpscirvhtey.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05510_zpscirvhtey.jpg.html)
Title: Re: 750S Rebuild merged
Post by: smdl on May 31, 2016, 10:05:07 PM
 :bow:

Well done, Jim!  I'll get mine done before they go on the bike.

Cheers,
Shaun
Title: Re: 750S Rebuild merged
Post by: Rick4003 on June 01, 2016, 12:27:55 AM
Nice job on the nobs, the turned part blends in quite well. Very difficult to see any difference.  :thumb:
Title: Re: 750S Rebuild merged
Post by: Chuck in Indiana on June 01, 2016, 07:17:31 AM
A great resource, and nice work as usual. Attaboy! :smiley:
Title: Re: 750S Rebuild merged
Post by: canuck750 on June 03, 2016, 11:12:41 PM
One more job to tackle, I have the original ignition switch and a couple keys but my experience with 40+ year old switched has not been good, they often act up and though I have tried to rebuild them I found I can buy a new Nieman style switch on Ebay for cheap and with a little work the new switch pops right into the cast switch holder. There are lots of people selling Nieman switches on Ebay but I found these on Ebay from Poland and they land here in Canada for under $40.00.

New switch on the top, old one on the bottom and the switch holder in the middle

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_0525_zps66vtyqnl.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_0525_zps66vtyqnl.jpg.html)

The new switch is a lot longer than the original, all you need is a drill, a couple drill bits, hacksaw and a rotary tool to ream out the inside of the switch holder

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_0526_zpsit1qvfx8.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_0526_zpsit1qvfx8.jpg.html)


To make it fit separate the switch by removing two Philips machine screws and with a hack saw shorten the removable lower casting and cut off the lock plunger (the 750S does not use the V7 Sport style lock). Then with a rotary tool and a round rasp head ream out the inside of the switch holder to allow the new plastic plug to fit into the holder.

This picture show the section of the lower casting I cut off, the remains of the lock plunger I cut off and the reamed out switch holder.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_0527_zpsawrchlh7.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_0527_zpsawrchlh7.jpg.html)

Then in alignment with the square recess in the casting drill two holes and ream them out like this. The new switch uses a two prong locking tab rather than the single round lock tab of the original.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_0528_zpsrbrkgjf0.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_0528_zpsrbrkgjf0.jpg.html)

You need to drill these two holes in the switch holder so the locking tabs can full release or the key will not turn. There is a small metric machine screw that can be installed through the switch holder into a pre-threaded hole in the new switch. I had to expand the existing hole in the cast switch holder body to allow the new machine screw to fit.

And once together it looks like this

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_0529_zpsqsbtsapz.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_0529_zpsqsbtsapz.jpg.html)

Original used switches show up on Ebay occasionally, I bought one once for too much money and it crapped out in less than a month, if  you have a V7 Sport, 750S, 750S3 or 850T this cheap ebay switch will do the job nicely and should last a long time.

This is where I buy the switches, UK EBay, the seller ships worldwide and I have bought four over the past couple years with no issues

http://www.ebay.co.uk/itm/CITROEN-XSARA-PICASSO-1998-2005-Ignition-Switch-Lock-Barrel-Keys-BRAND-NEW-/281579049626?hash=item418f6b529a:g:W5oAAOxyj4hTHzv0
Title: Re: 750S Rebuild merged
Post by: canuck750 on June 04, 2016, 01:18:41 PM
Re-installing the rear brake light switch, it came like this on the bile when I got it, a spring loaded switch attached to a small angle of steel, and the angle is attached by a M8 both through the frame rail / battery tray support, a long spring connects the switch to the brake pedal shaft

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/P1020055_zpscnnfwcea.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/P1020055_zpscnnfwcea.jpg.html)

Does anyone know if this is the stock switch and if so where I can find a new one? This switch was quite corroded and the spring loaded tang sticks a bit.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_0531_zps75zruv8r.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_0531_zps75zruv8r.jpg.html)

Thanks

Jim

Title: Re: 750S Rebuild merged
Post by: RinkRat II on June 04, 2016, 02:27:50 PM
 Something along these lines??http://www.ebay.com/itm/Emgo-Universal-Brake-Light-Switch-Rear-Stop-Spring-Pull-Motorcycle-New-K-S-/301366457630?hash=item462ad7351e:g:InoAAOSwfcVUE6bU&vxp=mtr (http://www.ebay.com/itm/Emgo-Universal-Brake-Light-Switch-Rear-Stop-Spring-Pull-Motorcycle-New-K-S-/301366457630?hash=item462ad7351e:g:InoAAOSwfcVUE6bU&vxp=mtr) :popcorn:



   Paul B :boozing:
Title: Re: 750S Rebuild merged
Post by: Antietam Classic Cycle on June 04, 2016, 02:31:23 PM
Does anyone know if this is the stock switch and if so where I can find a new one? This switch was quite corroded and the spring loaded tang sticks a bit.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_0531_zps75zruv8r.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_0531_zps75zruv8r.jpg.html)


Yes, that's an original switch. Used to be available, but I haven't seen one for a while. Maybe Harper's? http://www.harpermoto.com/stop-switch-14741110.html
Title: Re: 750S Rebuild merged
Post by: canuck750 on June 04, 2016, 08:18:46 PM
Something along these lines??http://www.ebay.com/itm/Emgo-Universal-Brake-Light-Switch-Rear-Stop-Spring-Pull-Motorcycle-New-K-S-/301366457630?hash=item462ad7351e:g:InoAAOSwfcVUE6bU&vxp=mtr (http://www.ebay.com/itm/Emgo-Universal-Brake-Light-Switch-Rear-Stop-Spring-Pull-Motorcycle-New-K-S-/301366457630?hash=item462ad7351e:g:InoAAOSwfcVUE6bU&vxp=mtr) :popcorn:
Paul B :boozing:

Thanks Rinkrat I think that would work just fine, my local bike shop may have that in stock too,

Charlie,  thank you for confirming the switch is an original piece of equipment, the bracket is pretty Mickey Mouse but I guess it worked.
Title: Re: 750S Rebuild merged
Post by: canuck750 on June 04, 2016, 09:50:08 PM
Tires arrived Friday and the local shop mounted them today

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_0562_zps6w32qi3j.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_0562_zps6w32qi3j.jpg.html)

Front is on, calipers appear to center

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_0563_zpspcfmlt4m.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_0563_zpspcfmlt4m.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_0564_zpse9bhindq.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_0564_zpse9bhindq.jpg.html)

Fitting the rear wheel I notice a bearing didn't feel right, pulled the seal, washed the grease out and sure enough one tapered bearing has a notch, I missed that when I re-greased it originally.

A new pair needs to be ordered.
Title: Re: 750S Rebuild merged
Post by: canuck750 on June 09, 2016, 10:45:49 PM
New rear wheel bearings arrived today, first to get the old bearings off the bearing holders,

A big socket and another socket piece

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05513_zpsdal9uvdi.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05513_zpsdal9uvdi.jpg.html)

Then into a vice to force the bearing off the holder

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05514_zps43mxiln7.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05514_zps43mxiln7.jpg.html)

Then grease the new bearings and reverse the process

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05516_zpspp93ctaf.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05516_zpspp93ctaf.jpg.html)

Drove out the old bearing races and then drive in new races

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05515_zpspy6jdwi3.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05515_zpspy6jdwi3.jpg.html)

You must replace the new bearings and races as a set, the old bearings and races are not the same pitch as the new ones, close but different enough that the new bearings do not drop in deep enough into the race.

I rechecked the spacer length between the bearings, with the new bearings the spacer was too short, I needed to add another shim and then turn a few thousands off the spacer to get the gap correct.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05517_zpsfia84qlb.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05517_zpsfia84qlb.jpg.html)

Assembled the rear brake control parts, I had the rod re-plated and polished the arms

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05511_zps7s9pfm1l.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05511_zps7s9pfm1l.jpg.html)

The wheel went back together, axle in place, the mufflers sit very tight to the axle, I may need to make a spacer plate to drop the mufflers down

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05520_zpsznl8nqwo.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05520_zpsznl8nqwo.jpg.html)

The bike is back on its tires and that feels like a milestone reached

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05518_zpsa7hiqolm.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05518_zpsa7hiqolm.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05519_zpsdfi9kfrz.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05519_zpsdfi9kfrz.jpg.html)
Title: Re: 750S Rebuild merged
Post by: canuck750 on June 13, 2016, 09:16:29 PM
I fitted a repro front fender, and I had the fender brackets re-chromed. I need to flip the brake line splitter 180 degrees (pointing up) and reroute the brake hoses above the lower triple (at least that's how they were fitted originally|) now that I have gone back and checked the original pictures. The way the brake hoses fit through rubber grommets and then through the rings on the front fender brace is unique (I think) to the 750S and Twin disc V7 Sport.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05522_zpsp3qidae6.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05522_zpsp3qidae6.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05523_zpsf3ub5m6o.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05523_zpsf3ub5m6o.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05527_zpsuxuincut.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05527_zpsuxuincut.jpg.html)

Rear brake arm attached, once again Harpers had the NOS parts such as the knurled adjuster nut

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05525_zpsxwvqqlgx.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05525_zpsxwvqqlgx.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05524_zpsi4tlxqop.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05524_zpsi4tlxqop.jpg.html)
Title: Re: 750S Rebuild merged
Post by: Old Jock on June 14, 2016, 03:55:29 AM
Fantastic looking love your eye for detail and the craftsmanship

Beautiful

Thanks

John
Title: Re: 750S Rebuild merged
Post by: frankperu on June 21, 2016, 02:18:59 AM
Great work Jim!

Any idea where I can get one of those little clutch adjuster lock ring thingys on page 4?

Frank

750S


(http://thumb.ibb.co/bGaj1F/Clipboard_image_2016_06_21_17_17_50.png) (http://ibb.co/bGaj1F)
Title: Re: 750S Rebuild merged
Post by: canuck750 on June 21, 2016, 09:25:20 AM
Great work Jim!

Any idea where I can get one of those little clutch adjuster lock ring thingys on page 4?

Frank

750S


(http://thumb.ibb.co/bGaj1F/Clipboard_image_2016_06_21_17_17_50.png) (http://ibb.co/bGaj1F)



That perch is not correct for a 750S, I think it is for a 850T (came on the bike when I got it), I have since fitted a V7 Sport / Eldo / 750S clutch perch and lever. As for the part you are looking for I could part with the whole perch assembly if you are interested in it. Open to cheap offers :grin:
Title: Re: 750S Rebuild merged
Post by: frankperu on June 21, 2016, 03:54:25 PM
I am keen to keep my 750S as original as possible - would you mind posting a pic of the correct perch?
Title: Re: 750S Rebuild merged
Post by: canuck750 on June 21, 2016, 07:32:12 PM
Clutch perch same s on the V7 Sport


(http://i249.photobucket.com/albums/gg217/canuck750/P2290009_zps2fcc9e5f.jpg) (http://s249.photobucket.com/user/canuck750/media/P2290009_zps2fcc9e5f.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/P2290008_zps5628181b.jpg) (http://s249.photobucket.com/user/canuck750/media/P2290008_zps5628181b.jpg.html)
Title: Re: 750S Rebuild merged
Post by: frankperu on June 22, 2016, 05:14:11 AM
Thanks Jim.

Mine looks more like your first one but without the lock ring.


(http://thumb.ibb.co/ea9rWF/20160620_200925.jpg) (http://ibb.co/ea9rWF)
Title: Re: 750S Rebuild merged
Post by: canuck750 on August 10, 2016, 10:46:26 PM
I finally got a break from work deadlines for a couple nights to play in the shop, broke out Gregory Bender's wiring harness kits, beautiful kit!

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05603_zpsgpmuky4f.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05603_zpsgpmuky4f.jpg.html)

I hard wired independent ground wires to each of the Aprilia signal light bodies

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05604_zpskq2tq5t9.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05604_zpskq2tq5t9.jpg.html)

I also swapped out the stock style bullet connections for sealed automotive locking male / female type connectors, I just find the original bullet types to be a weak link at best

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05606_zpseglti0nt.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05606_zpseglti0nt.jpg.html)

I also ditched the original CEV 5 pin terminal block at the headstock, up to 4 wires connect at  the junctions and by just removing the tank they can pop off

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05611_zpsivoa3zwi.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05611_zpsivoa3zwi.jpg.html)

I replaced the wires to the switches with Greg's kits, no use leaving just a few of the old wires

I made this point on the original terminal block as the common ground post to the frame for all the frontal area grounds

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05614_zpsh8vo1het.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05614_zpsh8vo1het.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05609_zpsdxdzu6yb.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05609_zpsdxdzu6yb.jpg.html)

On the home stretch for this one
Title: Re: 750S Rebuild merged
Post by: swooshdave on August 11, 2016, 12:05:15 AM
Yes, that's an original switch. Used to be available, but I haven't seen one for a while. Maybe Harper's? http://www.harpermoto.com/stop-switch-14741110.html

Identical to the switch on my T. Mine looks rough but works.
Title: Re: 750S Rebuild merged
Post by: swooshdave on August 11, 2016, 12:18:20 PM

I had TrueDisc regrind the rotors, the powder coater did not mask the inner opening so the rotor will not fit over the carrier, a sanding wheel quickly removes the baked on powder

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05475_zpsdkha839c.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05475_zpsdkha839c.jpg.html)

Did you also remove the powder coat where it mounts to the hub? If you didn't it's really back to have powder coat between the hub and rotor.
Title: Re: 750S Rebuild merged
Post by: canuck750 on August 11, 2016, 06:22:46 PM
Did you also remove the powder coat where it mounts to the hub? If you didn't it's really back to have powder coat between the hub and rotor.

You mean 'bad' to have paint between the hub and rotor??

The rotors came painted along this face originally and the powder coating is not too thick. I don't understand how paint on that surface of the rotor can have a detrimental effect of the operation of the brakes or the retention of the rotor to the hub? Calipers are usually painted as are the fork lowers that the calipers bolt to so I can't imagine the torqued force of the fasteners would compress the powder coating.

This is a good discussion though and other opinions would be welcome, maybe I am missing some basic physics.
Title: Re: 750S Rebuild merged
Post by: swooshdave on August 11, 2016, 08:33:41 PM
Have you checked the run out on the rotor? Powdercoat may be uneven. For example with Lockheed rotors when they grind them flat you want the rotor face parallel with the mounting surface. Very common with brake rotors.

Powdercoat is thick and can compress as it ages. Rotor may loosen over time. Please check periodically if you leave it.

Regular paint is relatively thin compared to Powdercoat and you can get away with a very thin coat of rust preventive paint.
Title: Re: 750S Rebuild merged
Post by: canuck750 on August 11, 2016, 10:03:14 PM
Have you checked the run out on the rotor? Powdercoat may be uneven. For example with Lockheed rotors when they grind them flat you want the rotor face parallel with the mounting surface. Very common with brake rotors.

Powdercoat is thick and can compress as it ages. Rotor may loosen over time. Please check periodically if you leave it.

Regular paint is relatively thin compared to Powdercoat and you can get away with a very thin coat of rust preventive paint.

Good points, probably good practice to check the torque on the rotor bolts annually. I had the rotors ground by Truedisk,

http://www.truedisk.net/

they do a fantastic job and are very reasonable
Title: Re: 750S Rebuild merged
Post by: guzzista on August 11, 2016, 10:56:14 PM
Love your build, Jim, Thanks for sharing it . +1 on Truedisk. Tom does a great job. He has done a LM 1/3 drilling type pattern on  a couple  sets of mine that looks great in case anyone wants something more Guzzi-ish like on their rotors
Title: Re: 750S Rebuild merged
Post by: swooshdave on August 11, 2016, 11:26:12 PM
Good points, probably good practice to check the torque on the rotor bolts annually. I had the rotors ground by Truedisk,

http://www.truedisk.net/

they do a fantastic job and are very reasonable

If you're going to spend the time getting the discs ground perfectly parallel I wouldn't trust Powdercoat to be as flat.

Check the runout.
Title: Re: 750S Rebuild merged
Post by: canuck750 on August 12, 2016, 03:40:41 PM
If you're going to spend the time getting the discs ground perfectly parallel I wouldn't trust Powdercoat to be as flat.

Check the runout.

Well you got my curiosity up I am going to measure the run out with a dial gauge, the only thing is, if the dial indicates there is a significant wobble (not even sure what that would measure?) I really will not know if it is the disc or the bearing/ disc carrier. Assuming the dial readings is inconsistent I will probably need to chuck up the disc carrier in the lathe and then measure them not to mention the wheel hub could also be a contributor to run out on the disc.

This could prove interesting.
Title: Re: 750S Rebuild merged
Post by: swooshdave on August 12, 2016, 06:11:25 PM
The assumption is that the person who ground the discs made them parallel.

The obvious culprit would be the Powdercoat.

If you have wobble it would be the same if you had a warped disc. Not good.
Title: Re: 750S Rebuild merged
Post by: canuck750 on August 24, 2016, 10:02:33 PM
I am down to the very last items, installed a Dyana Ignition this evening,

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05628_zpst4icmzfl.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05628_zpst4icmzfl.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05632_zpsixrmcfwp.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05632_zpsixrmcfwp.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05635_zps24nhkkqf.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05635_zps24nhkkqf.jpg.html)

So that finishes all the wiring with the exception of the signal light switch, waiting for an original right hand signal switch bracket, and I found a better picture of an original 750S that shows the 850T type clutch perch and a separate bracket for the light switch, again just waiting on a NOS bracket to arrive (thanks again Curtis).

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05636_zpsk6hs6oin.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05636_zpsk6hs6oin.jpg.html)

I just gota say once more, Gregory Bender's wire harness kits are amazing!!

Title: Re: 750S Rebuild merged
Post by: canuck750 on August 29, 2016, 09:17:16 PM
Finally some pretty bits

New repro tank emblems and a repro gas cap to the repainted tank

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05639_zps36en4w0l.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05639_zps36en4w0l.jpg.html)

Original electric fuel valve with a reproduction decal

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05640_zpshizbpjyq.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05640_zpshizbpjyq.jpg.html)

Only two parts yet to source / fit, the CEV switch brackets, left and right, switches zip tied for now

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/DSC05641_zpszthajkua.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/DSC05641_zpszthajkua.jpg.html)

Checking my 750S part book it turns out the 750S takes the same clutch perch and cable as the 850T

Harry sold me a great Sprint half fairing that I took to the painter to get repainted black, it should look sharp on this bike.
Title: Re: 750S Rebuild merged
Post by: balvenie on August 29, 2016, 10:44:44 PM
This is a Great story, Jim :grin:
Title: Re: 750S Rebuild merged
Post by: smdl on August 30, 2016, 11:24:57 AM
Amazing...
Title: Re: 750S Rebuild merged
Post by: canuck750 on August 30, 2016, 12:31:43 PM
Thanks Shaun. I think this one is my favourite. Once I get the half fairing mounted it will be pretty unique.

How is your sports car project coming?

Cheers

Jim
Title: Re: 750S Rebuild merged
Post by: smdl on August 30, 2016, 01:48:19 PM
Hi, Jim.

Thanks for asking.  The Spitfire is just about back together and ready for a safety inspection.  That should give me a decent driver for now, and I will work on the TR250 restoration over the next few years.  However, that won't happen until I first complete the 750S tribute.  Should be getting back to that next month, and can't wait.  Your updates serve to frequently remind me of how important that is to me!

Gratuitous Spitfire pic:


(http://thumb.ibb.co/h8Yx5a/image.jpg) (http://ibb.co/h8Yx5a)


Cheers,
Shaun


Title: Re: 750S Rebuild merged
Post by: canuck750 on August 30, 2016, 02:21:00 PM
Hi, Jim.

Thanks for asking.  The Spitfire is just about back together and ready for a safety inspection.  That should give me a decent driver for now, and I will work on the TR250 restoration over the next few years.  However, that won't happen until I first complete the 750S tribute.  Should be getting back to that next month, and can't wait.  Your updates serve to frequently remind me of how important that is to me!

Gratuitous Spitfire pic:


(http://thumb.ibb.co/h8Yx5a/image.jpg) (http://ibb.co/h8Yx5a)


Cheers,
Shaun


Nice car, and a metal bumper era to boot!
Title: 750S Rebuild The Build is Done
Post by: canuck750 on September 21, 2016, 09:22:22 PM
After the better part of 9 months the 750S rebuild is done.

The last details were the electrical; switch brackets came via Ebay - from Eurotrash, now the switches and controls are correct

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_0841_zpsarvnetlw.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_0841_zpsarvnetlw.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_0842_zpswflhaec6.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_0842_zpswflhaec6.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_0843_zpsykupeaaa.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_0843_zpsykupeaaa.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_0844_zpsw7hi5h3g.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_0844_zpsw7hi5h3g.jpg.html)

Fitted a Brown side stand (thanks to Cam for getting these into production), they work great and they DON'T collapse

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_0845_zpsz8lodfmw.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_0845_zpsz8lodfmw.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_0847_zpsvpb8mpgf.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_0847_zpsvpb8mpgf.jpg.html)

Now to fill the crankcase with oil, fit a battery and see if it starts, hopefully I get it fired up on the weekend.
Title: Re: 750S The Build is Done
Post by: smdl on September 21, 2016, 09:47:39 PM
 :thumb: :thumb: :thumb: :thumb:
Title: Re: 750S The Build is Done
Post by: balvenie on September 21, 2016, 09:52:27 PM
 :bow: :grin:
Title: Re: 750S The Build is Done
Post by: keener on September 21, 2016, 10:01:44 PM
Bravo...your attention to detail is inspiring and appreciated ..
Soon you will be riding , hopefully before the snow fly's 
Keener   
Title: Re: 750S The Build is Done
Post by: oldbike54 on September 21, 2016, 10:11:15 PM
 Bravo  :bike-037:

 Dusty
Title: Re: 750S The Build is Done
Post by: Muzz on September 21, 2016, 10:23:02 PM
Jim, I have been thoroughly enjoying this build, and have learned heaps myself from it.

The end result is truly outstanding. A gazzilion thumbs up! :thumb: :thumb: :thumb: :thumb: :thumb:
Title: Re: 750S The Build is Done
Post by: Nolan Woodbury on September 21, 2016, 11:30:03 PM
Well done!
Title: Re: 750S The Build is Done
Post by: Aldo on September 21, 2016, 11:35:41 PM
Excellent job, looks stunning!  :thumb:
Title: Re: 750S The Build is Done
Post by: Demar on September 22, 2016, 12:37:04 AM
Congrats Canuck, that's a beautiful bike. I hope to restore a V7 Special some day.
Title: Re: 750S The Build is Done
Post by: Cam3512 on September 22, 2016, 07:03:02 AM
Hey Jim, it looks like that Brown stand is hanging too low in the retracted position.  It should be parallel to the flat pipes on the 750S/V7 Sport.  I've heard of another one (Charlie's customer) that was the same way.  It appears they got the angle wrong when welding the modified mounting plate.  I would send it back to Boxerworks to get it right.  Unacceptable for that price.  Here's mine (first Guzzi prototype) on the Sport....


(http://thumb.ibb.co/dCq0tv/image.jpg) (http://ibb.co/dCq0tv)



(http://thumb.ibb.co/ctf0tv/image.jpg) (http://ibb.co/ctf0tv)


Title: Re: 750S The Build is Done
Post by: Dukedesmo on September 22, 2016, 07:42:10 AM
Very nice, well done.  :thumb:
Title: Re: 750S The Build is Done
Post by: Fuzzy on September 22, 2016, 08:16:40 AM
Wow...just...wow 
Title: Re: 750S The Build is Done
Post by: canuck750 on September 22, 2016, 08:56:31 AM
Hey Jim, it looks like that Brown stand is hanging too low in the retracted position.  It should be parallel to the flat pipes on the 750S/V7 Sport.  I've heard of another one (Charlie's customer) that was the same way.  It appears they got the angle wrong when welding the modified mounting plate.  I would send it back to Boxerworks to get it right.  Unacceptable for that price.  Here's mine (first Guzzi prototype) on the Sport....


(http://thumb.ibb.co/dCq0tv/image.jpg) (http://ibb.co/dCq0tv)



(http://thumb.ibb.co/ctf0tv/image.jpg) (http://ibb.co/ctf0tv)


Come to think of it I thought it looked strange, age is creeping up on me! I will take it off and send it back as you suggested. Thanks for catching that.

Cheers

Jim


PS 

to the WG Community - Thanks for all the encouragement and advice along the way, without this fantastic web site and its many, many knowledgeable people projects like this would not be possible.
Title: Re: 750S The Build is Done
Post by: Antietam Classic Cycle on September 22, 2016, 09:10:55 AM
Come to think of it I thought it looked strange, age is creeping up on me! I will take it off and send it back as you suggested. Thanks for catching that.

They'll tel you that there's something different about your bike or that you're installing it wrong. That's the response I got anyway.

One question, Jim. Did the 750S have a "shroud" around the warning lights like the V7 Sport (the forward portion of the housing had a raised "lip" around three sides)?

(http://www.stein-dinse.biz/images/product_images/popup_images/17769100.jpg)

One suggestion: you need one of the plastic covers to hide your solenoid. :-)

(http://www.mgcycle.com/images/atrex/19733350.jpg)
Title: Re: 750S The Build is Done
Post by: Cam3512 on September 22, 2016, 09:20:32 AM
Send Nathan those pictures.  There's really no wrong way to possibly mount it.  They know all Tonti's are essentially the same.
Title: Re: 750S The Build is Done
Post by: canuck750 on September 22, 2016, 10:27:43 AM
They'll tel you that there's something different about your bike or that you're installing it wrong. That's the response I got anyway.

One question, Jim. Did the 750S have a "shroud" around the warning lights like the V7 Sport (the forward portion of the housing had a raised "lip" around three sides)?

(http://www.stein-dinse.biz/images/product_images/popup_images/17769100.jpg)

One suggestion: you need one of the plastic covers to hide your solenoid. :-)

(http://www.mgcycle.com/images/atrex/19733350.jpg)

Ian Fallon's book on the Sport / Le Mans claimed that the 750S came with either the browed or flat idiot light bezel.

This picture of a 750S in Italy shows the brow, it also indicates the earlier throttle, which is probably the correct one but I had a couple of the later Tomaselli types laying around.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/Guzzi_750S_008_zpshkfd9tcd.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/Guzzi_750S_008_zpshkfd9tcd.jpg.html)

I chose the non brow bezel to be distinctive from my V7 Sport, I believe either is correct.

I have not seen the solenoid cover on pictures of the 750S, was it a stock item?
Title: Re: 750S The Build is Done
Post by: Antietam Classic Cycle on September 22, 2016, 10:39:11 AM
I have not seen the solenoid cover on pictures of the 750S, was it a stock item?

No, but sure hides a lot of "ugly".  :wink:
Title: Re: 750S The Build is Done
Post by: blackcat on September 22, 2016, 10:53:46 AM
 Beautiful work.
Title: Re: 750S The Build is Done
Post by: mgmark on September 22, 2016, 03:09:44 PM

I have not seen the solenoid cover on pictures of the 750S, was it a stock item?

Hi Jim,
Thanks for saving another deserving motorcycle. Beautiful!

The plastic solenoid cover came original on my '85 Lemans, and I'm sure other models of the era. It just snaps on over the solenoid. I bought a replacement for my bike from MG Cycle.

Mark
Title: Re: 750S The Build is Done
Post by: Rick4003 on September 22, 2016, 09:08:40 PM
Hi Jim,

beautiful work as always!

-Ulrik
Title: Re: 750S The Build is Done
Post by: wirespokes on September 22, 2016, 10:54:07 PM
I'm impressed with your build quality. Stunning!

And thanks for the tip on powder coating - I had no idea it was that easy and cheap to do.

I may be able to find you the correct tachometer needle if you're interested.
Title: Re: 750S The Build is Done
Post by: mikebr on September 22, 2016, 11:14:19 PM
Very nice job and excellent write up. :bow:
Title: Re: 750S The Build is Done
Post by: canuck750 on September 23, 2016, 11:24:26 AM
I'm impressed with your build quality. Stunning!

And thanks for the tip on powder coating - I had no idea it was that easy and cheap to do.

I may be able to find you the correct tachometer needle if you're interested.

I would sure appreciate it if you can find a correct tachometer, I 'made' the tach by painting out the 'Electronic' words on an Eldorado tach and fitting the face plate to a 850T mechanical tach body, also 'raised' the red line with some black paint and fine brush. :wink:

DIY Powder coating is so easy and quick plus there is no mess and the reside powder just sweeps up. A big toaster oven works great for small parts and Harbour Freight sells a decent DIY powder spray gun + you only need about 5 psi to blow the powder on, which the cheapest little air compressor can provide. Eastwood Automotive's powders are pretty low cost and there is a lot of selection.

PS, thanks for the kind words fellas, the 1977 850 Le Mans goes up on the lift next.
Title: Re: 750S The Build is Done
Post by: Sheepdog on September 23, 2016, 11:31:46 AM
A sensational restoration. Well done...
Title: Re: 750S The Build is Done
Post by: ritratto on September 23, 2016, 12:43:58 PM
Fantastic!
Now tell us how it runs!
Would love to hear it too.
 :bike-037:
Title: Re: 750S The Build is Done
Post by: Markcarovilli on September 24, 2016, 05:04:44 AM
Super nice work ..... Waiting on the run report.

Mark
Title: Re: 750S The Build is Done
Post by: dan_s on September 24, 2016, 12:45:02 PM
Great bike and thanks for sharing the photos

dan
Title: Re: 750S The Build is Done
Post by: pressureangle on September 24, 2016, 01:36:56 PM
Awesome!

Title: Re: 750S The Build is Done
Post by: canuck750 on September 24, 2016, 03:06:32 PM
I took some outdoor pictures today, I ain't much of a photographer though!

these may be helpful though to anyone one wanting to rebuild one or assemble a clone. It's about 97% correct except it would have come from the factory with the small non solenoid starter and the tachometer should have the fat needle.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/PB180022_zpss0shdje0.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/PB180022_zpss0shdje0.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/PB180024_zps7a1k4hjl.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/PB180024_zps7a1k4hjl.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/PB180026_zpsntx3843d.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/PB180026_zpsntx3843d.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/PB180028_zpsax6nuocs.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/PB180028_zpsax6nuocs.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/PB180029_zpscam1epv3.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/PB180029_zpscam1epv3.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/PB180031_zps1wh13arl.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/PB180031_zps1wh13arl.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/PB180032_zpssyzra9pk.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/PB180032_zpssyzra9pk.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/PB180034_zpswx5wgdon.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/PB180034_zpswx5wgdon.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/PB180036_zps5ictivhc.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/PB180036_zps5ictivhc.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/PB180037_zpsfchw6d1a.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/PB180037_zpsfchw6d1a.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/PB180038_zpsqreslsdg.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/PB180038_zpsqreslsdg.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/PB180042_zpsysgcq6ec.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/PB180042_zpsysgcq6ec.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/PB180043_zpsuztvhslh.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/PB180043_zpsuztvhslh.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/PB180044_zpsazt63ddd.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/PB180044_zpsazt63ddd.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/PB180045_zpsxtml5qg8.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/PB180045_zpsxtml5qg8.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/PB180048_zps08qp3jtq.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/PB180048_zps08qp3jtq.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/PB180049_zpsuesz0quv.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/PB180049_zpsuesz0quv.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/PB180051_zpsykv3hauq.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/PB180051_zpsykv3hauq.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/PB180053_zpso1ba24ug.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/PB180053_zpso1ba24ug.jpg.html)



Title: Re: 750S The Build is Done
Post by: Antietam Classic Cycle on September 24, 2016, 03:21:57 PM
 :thumb:
Title: Re: 750S The Build is Done
Post by: balvenie on September 24, 2016, 07:47:28 PM
Curses :angry: I'm hopping Mad. This is a very bad time for my computer screen to stretch the images so I can't see Jim's bike :cry:
But apart from that
Have a very good ride :grin:
Title: Re: 750S The Build is Done
Post by: jbell on September 26, 2016, 01:02:50 PM
Quite beautimos.  Fantastico!  Maybe send pics to Aprilia to remind them of what they (MG)were once capable of building.
Title: Re: 750S The Build is Done
Post by: Antietam Classic Cycle on September 26, 2016, 01:13:18 PM
Quite beautimos.  Fantastico!  Maybe send pics to Aprilia Piaggio to remind them of what they (MG) were once capable of building.

Fixed it for you.  :wink: I doubt Aprilia gives a flying fig about Guzzi since they're no longer the owner.
Title: Re: 750S The Build is Done
Post by: nick949 on September 26, 2016, 01:53:09 PM
Very nice Jim.  :bow: Now do mine  :evil:

Nick
Title: Re: 750S The Build is Done
Post by: Cam3512 on September 26, 2016, 02:24:32 PM
Truly spectacular!
Title: Re: 750S The Build is Done
Post by: swooshdave on September 26, 2016, 03:10:57 PM
(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/PB180053_zpso1ba24ug.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/PB180053_zpso1ba24ug.jpg.html)

What is that boss just below the brake rod? Left over from when there was a cable?
Title: Re: 750S The Build is Done
Post by: tris on September 26, 2016, 03:35:59 PM
I took some outdoor pictures today, I ain't much of a photographer though!

these may be helpful though to anyone one wanting to rebuild one or assemble a clone. It's about 97% correct except it would have come from the factory with the small non solenoid starter and the tachometer should have the fat needle.

If anyone gets that critical about such a fine build I suggest that you treat them to "a punch up the bracket" to use some old Anglo Saxon saying  :grin:
Title: Re: 750S The Build is Done
Post by: v7john on September 26, 2016, 03:46:47 PM
What is that boss just below the brake rod? Left over from when there was a cable?
Yes. that's right. Cable operated brake was on the left side.
(http://i875.photobucket.com/albums/ab317/v7johnpics/V7Sport%20Racing%20Rhino/DSCF1641-1.jpg)
(http://i875.photobucket.com/albums/ab317/v7johnpics/V7Sport%20Racing%20Rhino/DSCF1638-1.jpg)
Title: Re: 750S The Build is Done
Post by: Antietam Classic Cycle on September 26, 2016, 03:56:37 PM
Yes. that's right. Cable operated brake was on the left side.

That backing plate was originally the Loopframe 2LS front with an added stud sticking out the bottom for the torque rod attachment. 
Title: Re: 750S The Build is Done
Post by: v7john on September 26, 2016, 04:50:15 PM
That backing plate was originally the Loopframe 2LS front with an added stud sticking out the bottom for the torque rod attachment.
Yep. The same brake is fitted to the front of my old V7 700. The V7Sport/750S one still has the groove cut to anchor the brake to the loopframe LH fork.
Title: Re: 750S The Build is Done
Post by: canuck750 on September 26, 2016, 06:19:03 PM
The V7 Sport was a bit of a parts bin bike in some ways, sure the frame was brand new but the engine, transmission and rear drive were all carry overs from the Eldorado.

As Charlie stated even the rear brake plate is from the front brake of the 2LS Eldorado.

Guzzi still deserves a lot of credit for being able to work with very limited resources to create something so very different with their first foray from the venerable Loop.  Going forward from the V7 Sport each years iteration of a sporting Guzzi was a slow progression of the last, evolution and not revolution.

That brand from Germany with the boxer motor has followed a similar approach to development, as a sporting machine I  think Guzzi got it better from the start. For all the acclaim the R90S gets, I feel Guzzi was years ahead of the Germans with the original 750 Series of sporting bikes, and then came the Le Mans, no contest in my mind that Guzzi beat BMW hands down with the 850's.

Title: Re: 750S The Build is Done
Post by: swooshdave on September 26, 2016, 09:41:36 PM
The V7 Sport was a bit of a parts bin bike in some ways, sure the frame was brand new but the engine, transmission and rear drive were all carry overs from the Eldorado.

As Charlie stated even the rear brake plate is from the front brake of the 2LS Eldorado.

Guzzi still deserves a lot of credit for being able to work with very limited resources to create something so very different with their first foray from the venerable Loop.  Going forward from the V7 Sport each years iteration of a sporting Guzzi was a slow progression of the last, evolution and not revolution.

That brand from Germany with the boxer motor has followed a similar approach to development, as a sporting machine I  think Guzzi got it better from the start. For all the acclaim the R90S gets, I feel Guzzi was years ahead of the Germans with the original 750 Series of sporting bikes, and then came the Le Mans, no contest in my mind that Guzzi beat BMW hands down with the 850's.

I explained to my wife about the sagging cylinders on a BMW compared to the Guzzi.



She chortled. Then the 10 yr old daughter wanted an explanation and then I got the glare from the wife.  :thewife:
Title: Re: 750S The Build is Done
Post by: swooshdave on September 26, 2016, 10:52:15 PM
I would have thought the 750S would have got the 850T rear brake.
Title: Re: 750S The Build is Done
Post by: canuck750 on September 27, 2016, 09:14:27 PM
I would have thought the 750S would have got the 850T rear brake.

Ian Falloon talks about this in his description of the 750S, the 74 S was a carry over of the V7 Sport, it uses most all of the V7 Sport components and incorporates the front forks and disc brake(s) that would be seen on the 850T. The tool box / side covers are the same as the 850T but do not have the punched louvres. My guess is that as the Eldorado was being phased out the parts bins were being emptied and the rear brake plate of the V7 Sport (front brake plate from the Eldorado) were used up. There were under 1000 of the 750S made, reportedly a handful imported into the USA by Berliner and likely manufactured prior to the 850T being ramped up into production.

The 750 S3 is basically a 850 T3 with the V7 Sport heads,  exhaust similar to the 750S, the handlebars and controls of the upcoming 1976 Le Mans and the headlight, signal lights and seat from the 750S.

All of the early 750 Sport bikes are interesting but I feel the 1974 750S incorporates the best of the V7 Sport and the improvements of the 850T (without the better rear drum brake of the T).
Title: Re: 750S The Build is Done
Post by: swooshdave on September 27, 2016, 09:55:34 PM
Was the 850T rear brake really for that model only? That would be a shame.
Title: Re: 750S The Build is Done
Post by: canuck750 on September 28, 2016, 01:25:58 PM
Was the 850T rear brake really for that model only? That would be a shame.

Yes, pretty rare setup.

Common to see the 850T rear 2LS brake with cush drive swapped onto an Eldorado.
Title: Re: 750S The Build is Done
Post by: Cam3512 on September 28, 2016, 08:28:01 PM
That backing plate was originally the Loopframe 2LS front with an added stud sticking out the bottom for the torque rod attachment.

Funny this should come up.  I had two people ask about the unused cable boss on my '74 V7 Sport's rear during last Sunday's ride.   Told 'em it was leftover on the shelf.  I didn't know it was the same as a loop's front plate.  Still learning!
Title: Re: 750S The Build is Done
Post by: canuck750 on September 28, 2016, 11:10:06 PM
Funny this should come up.  I had two people ask about the unused cable boss on my '74 V7 Sport's rear during last Sunday's ride.   Told 'em it was leftover on the shelf.  I didn't know it was the same as a loop's front plate.  Still learning!

There is a slight difference, I had to make do with a Loop front brake plate on the last V7 Sport I built, the Loop brake backing plate lacks the threaded stud that accepts the rear brake torque arm and if I recall correctly I had to machine the inside of the hub to clear the rear wheel center hub. With a little fiddling it did work. I had checked with Curtis back then and the part numbers were different but it is obvious the Loop front brake plate was used as the basis for the V7 sport rear brake.
Title: Re: 750S The Build is Done
Post by: canuck750 on December 30, 2016, 10:04:00 PM
An update to my 750S build. I started my quest for a 750S deciding to build a clone years ago. It took me three years to gather up all the correct parts and then I found a real 750S to rebuild. This fall I traded the clone project with the finished black / green paint work to Don G. for his stunning 1000S. I had another original set of 750S tool boxes and tank, had them repainted the black / red scheme/ Harry in Ontario sold me his Sprint fairing off his CX100, thanks Harry! So here it finished and wearing black/red clothes. I may add some red stripes tp the sides of the fairing using vinyl wrap, going to experiment with some different locations of the double red / thin white stripe.

This is my favorite looking bike but I had to drop the swan necks to clear the fairing so the riding position may not agree with my crappy back.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_1022_zpsdw1wgkid.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_1022_zpsdw1wgkid.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_1024_zpsx45bv7sx.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_1024_zpsx45bv7sx.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_1025_zpsccrmtuyi.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_1025_zpsccrmtuyi.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_1026_zpsolzelilt.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_1026_zpsolzelilt.jpg.html)
Title: Re: 750S The Build is Done
Post by: oldbike54 on December 30, 2016, 10:09:42 PM
 Lovely Jim  :bow:

 Dusty
Title: Re: 750S The Build is Done
Post by: smdl on December 30, 2016, 10:11:18 PM
Beautiful outcome, Jim! 

Would also like to see some pics of the 1000S, when you have a chance.

Cheers,
Shaun
Title: Re: 750S The Build is Done
Post by: canuck750 on December 30, 2016, 10:15:24 PM
Thanks Dusty, Shaun

Some pics of the 1000S, all original. less than 2000 miles on the bike, a time capsule.

(http://i249.photobucket.com/albums/gg217/canuck750/1993%201000S/IMG_0892_zpslitj920j.jpg) (http://s249.photobucket.com/user/canuck750/media/1993%201000S/IMG_0892_zpslitj920j.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1993%201000S/IMG_0893_zpshakyemhb.jpg) (http://s249.photobucket.com/user/canuck750/media/1993%201000S/IMG_0893_zpshakyemhb.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1993%201000S/IMG_0899_zps28duh7m0.jpg) (http://s249.photobucket.com/user/canuck750/media/1993%201000S/IMG_0899_zps28duh7m0.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1993%201000S/IMG_0900_zpsdre5hyfr.jpg) (http://s249.photobucket.com/user/canuck750/media/1993%201000S/IMG_0900_zpsdre5hyfr.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1993%201000S/IMG_0901_zpsl3csd4ru.jpg) (http://s249.photobucket.com/user/canuck750/media/1993%201000S/IMG_0901_zpsl3csd4ru.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1993%201000S/IMG_0907_zpstdjehxg6.jpg) (http://s249.photobucket.com/user/canuck750/media/1993%201000S/IMG_0907_zpstdjehxg6.jpg.html)
Title: Re: 750S The Build is Done
Post by: smdl on December 30, 2016, 10:19:43 PM
Amazing!  Thanks for sharing the pics, and thanks to Don G for preserving it while he had it!  Truly a treasure!!

Cheers,
Shaun
Title: Re: 750S The Build is Done
Post by: Shorty on December 30, 2016, 10:21:21 PM
 :cry:  Sniff      They are very, very nice!  :thumb:
Title: Re: 750S The Build is Done
Post by: canuck750 on December 30, 2016, 10:23:30 PM
And Don has already rebuilt the 4LS Eldorado I traded with the 750S clone, he does great work, the bike looks and sounds great. I can't wait to see how the 750S clone turns out, I am betting Don will turn it into a real stunner.
Title: Re: 750S The Build is Done
Post by: twowings on December 30, 2016, 10:24:18 PM
Gorgeous!
Title: Re: 750S The Build is Done
Post by: wirespokes on December 30, 2016, 10:37:55 PM
Gorgeous!

Thanks for sharing.
Title: Re: 750S The Build is Done
Post by: Huzo on December 31, 2016, 04:33:36 AM
It's beyond me how anyone can do work so beautifully, flawless. In a similar league to Old Jock and the like. Priceless!!!
Title: Re: 750S The Build is Done
Post by: AH Fan on December 31, 2016, 07:34:35 AM
Thanks Dusty, Shaun

Some pics of the 1000S, all original. less than 2000 miles on the bike, a time capsule.

(http://i249.photobucket.com/albums/gg217/canuck750/1993%201000S/IMG_0892_zpslitj920j.jpg) (http://s249.photobucket.com/user/canuck750/media/1993%201000S/IMG_0892_zpslitj920j.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1993%201000S/IMG_0893_zpshakyemhb.jpg) (http://s249.photobucket.com/user/canuck750/media/1993%201000S/IMG_0893_zpshakyemhb.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1993%201000S/IMG_0899_zps28duh7m0.jpg) (http://s249.photobucket.com/user/canuck750/media/1993%201000S/IMG_0899_zps28duh7m0.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1993%201000S/IMG_0900_zpsdre5hyfr.jpg) (http://s249.photobucket.com/user/canuck750/media/1993%201000S/IMG_0900_zpsdre5hyfr.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1993%201000S/IMG_0901_zpsl3csd4ru.jpg) (http://s249.photobucket.com/user/canuck750/media/1993%201000S/IMG_0901_zpsl3csd4ru.jpg.html)

(http://i249.photobucket.com/albums/gg217/canuck750/1993%201000S/IMG_0907_zpstdjehxg6.jpg) (http://s249.photobucket.com/user/canuck750/media/1993%201000S/IMG_0907_zpstdjehxg6.jpg.html)



That's pretty Jim.
I was looking for one of those a while back.......... its good to know theirs one out there.   :thumb:

Ciao
Title: Re: 750S The Build is Done
Post by: nick949 on December 31, 2016, 07:51:43 AM
Wonderful work Jim  :boozing:  And thanks for taking the time to show us the progress - it's a real inspiration.

Nick
Title: Re: 750S The Build is Done
Post by: Chuck in Indiana on December 31, 2016, 12:43:41 PM
That's a really nice piece of work. Attaboy.. :thumb: :smiley:
Title: Re: 750S The Build is Done
Post by: balvenie on December 31, 2016, 05:59:23 PM
It is indeed, Pretty :grin:  :thumb:
Title: Re: 750S The Build is Done
Post by: harrytief on December 31, 2016, 09:03:17 PM
Jim
I want the fairing back...along with the bike!
Just too gorgeous for words.
Thumbs up.
Harry
Title: Re: 750S The Build is Done
Post by: guzzinka on December 31, 2016, 09:59:37 PM
  You traded a "project" clone bike for a near perfect example of one of the most prized collectible later model Guzzi around?!  I hope you negotiate deals professionally with that impressive skill set!
Title: Re: 750S The Build is Done
Post by: ritratto on December 31, 2016, 10:11:04 PM
What I want to know is, have you ridden them both yet?
Title: Re: 750S The Build is Done
Post by: jas67 on January 01, 2017, 08:09:28 AM
Yes, pretty rare setup.

Common to see the 850T rear 2LS brake with cush drive swapped onto an Eldorado.

Is it much of an improvement?   I haven't yet ridden my Eldo to know how good or bad the brakes are.

My eldo is a late with with disc-brake up front.    I just had the front wheel off to take some measurements for Charlie who is making spacers to add a second disc to one that he will be working on.     The left fork leg has the bosses and holes to add a second caliper.    I'm definitely planning on putting a second caliper on it.

The calipers on that 750S look to be the same as the Eldo's.   Are they?   What other models use the same calipers?   I'm on the lookout for a left caliper for my Eldo if anyone has one that will work, which they want to sell.

EDIT:  a little searching found the answer.   F08 is the caliper is the one, and I can get a new one from MG Cycle.
Title: Re: 750S The Build is Done
Post by: canuck750 on January 01, 2017, 08:18:09 AM
What I want to know is, have you ridden them both yet?

No not yet, come spring the 1000S and the 750S will get fired up and tuned. I am going to put the 750S on the road this year, probably not the 1000S.
Title: Re: 750S The Build is Done
Post by: canuck750 on January 01, 2017, 08:26:04 AM

The calipers on that 750S look to be the same as the Eldo's.   Are they?   What other models use the same calipers?   I'm on the lookout for a left caliper for my Eldo if anyone has one that will work, which they want to sell.

EDIT:  a little searching found the answer.   F08 is the caliper is the one, and I can get a new one from MG Cycle.

Buying a new Brembo caliper from MG is the route to go. I swapped the 2LS drum on my Eldorado for twin discs years ago, all brake parts from MG, I went with the EBC floater discs on Gordon's recommendation, and bought a new master cylinder from MG as well, the brakes are wonderful! I used the braided hose kits from MG for all the lines.

(http://i249.photobucket.com/albums/gg217/canuck750/1972%20Moto%20Guzzi%20850%20Eldorado/nov62012002.jpg) (http://s249.photobucket.com/user/canuck750/media/1972%20Moto%20Guzzi%20850%20Eldorado/nov62012002.jpg.html)

I recommend fitting the FAC dampers and progressive fork springs as well, it will transform the ride.
Title: Re: 750S The Build is Done
Post by: ritratto on January 01, 2017, 08:52:07 AM
No not yet, come spring the 1000S and the 750S will get fired up and tuned. I am going to put the 750S on the road this year, probably not the 1000S.

That is a shame, as mine was in the same shape as yours when I bought it in '99, but has become my favorite bike of all time. It is still low mileage, but I love to ride it.
Title: Re: 750S The Build is Done
Post by: RANDM on January 01, 2017, 09:09:44 AM
Absolutely stunning bikes - congratulations.

Maurie.
Title: Re: 750S The Build is Done
Post by: Rick4003 on January 01, 2017, 10:45:22 PM
Spectacular like always Jim! You're an inspiration!  :thumb:

-Ulrik
Title: Re: 750S The Build is Done
Post by: canuck750 on January 02, 2017, 02:18:00 PM
Thanks for the kind words fellas, much appreciated. Just 4 more months of winter.......
Title: Re: 750S The Build is Done
Post by: mjptexas on January 02, 2017, 02:37:29 PM
Thanks for the kind words fellas, much appreciated. Just 4 more months of winter.......

So Jim, is the Laverda up next?
Title: Re: 750S The Build is Done
Post by: canuck750 on January 02, 2017, 02:51:17 PM
So Jim, is the Laverda up next?

It's almost done

(http://i249.photobucket.com/albums/gg217/canuck750/1973%20Laverda%20SF1/DSC05851_zpsic58kef0.jpg) (http://s249.photobucket.com/user/canuck750/media/1973%20Laverda%20SF1/DSC05851_zpsic58kef0.jpg.html)

Just waiting on some new headers, pet cocks, tach cable and some parts to rebuild the gauges. Then to cross my fingers and hit the start button.
Title: Re: 750S The Build is Done
Post by: smdl on January 02, 2017, 03:15:01 PM
Geez, now I know where the Energizer Bunny hangs out in winter.   :grin:

Looks great, Jim -- not that I expected anything less!

Cheers,
Shaun
Title: Re: 750S The Build is Done
Post by: canuck750 on January 02, 2017, 04:09:50 PM
Geez, now I know where the Energizer Bunny hangs out in winter.   :grin:

Looks great, Jim -- not that I expected anything less!

Cheers,
Shaun

And here's the kicker about Laverda's - Wolfgang Haerter in Nakusp, British Columbia - Columbia Car and Cycle - has almost everything (and I mean everything you can imagine or ever need) in stock! I am just blown away but what Wolfgang can get for a Laverda.

Prices on parts are generally less than that for a Guzzi, I pay in CDN dollars, the parts come to me in days by Canada Post and Wolfgang is a wonderful source of advice and information.

I think I need to find a spoke wheeled 3C Laverda project!
Title: Re: 750S The Build is Done
Post by: mgmark on January 02, 2017, 05:38:30 PM
So Jim, is the Laverda up next?

I'm waiting for the LeMans I rebuild!
Beautiful work as always Jim, and a beautiful 1000S also. You have quite the growing collection!
Title: Re: 750S The Build is Done
Post by: smdl on January 02, 2017, 06:30:21 PM
And here's the kicker about Laverda's - Wolfgang Haerter in Nakusp, British Columbia - Columbia Car and Cycle - has almost everything (and I mean everything you can imagine or ever need) in stock! I am just blown away but what Wolfgang can get for a Laverda.

Prices on parts are generally less than that for a Guzzi, I pay in CDN dollars, the parts come to me in days by Canada Post and Wolfgang is a wonderful source of advice and information.

I think I need to find a spoke wheeled 3C Laverda project!

I've heard the same thing about Wolfgang from a number of different people, so it definitely appears that he is "the man" for Laverda.  I heard a nasty rumor that he might be retiring, though?  Hope not for the sake of Laverda owners!

I've been through Nakusp several times, but that was before I had heard of Wolfgang.  Will have to try to stop in next time I am out that way. 

 :1: on the 3C!

Cheers,
Shaun

Title: Re: 750S The Build is Done
Post by: canuck750 on January 02, 2017, 08:29:55 PM
Apparently Wolfgang and his wife are going to scale back to a couple days a week.
Wolfgang's son Chris is running the shop but the parts business will run a wee bit slower.
I sure hope he continues with the business for many years to come.
Title: Re: 750S The Build is Done
Post by: Moz on January 12, 2017, 10:06:20 PM
always loved the 750S..  thank you for wasting my afternoon - time well spent  :bow:
Title: Re: 750S The Build is Done
Post by: canuck750 on January 13, 2017, 09:53:11 AM
always loved the 750S..  thank you for wasting my afternoon - time well spent  :bow:

Glad to be of help!

My son added some red stripes to the fairing using vinyl rather than paint. A very good match as well.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_1127_zpsfqmdwnoe.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_1127_zpsfqmdwnoe.jpg.html)
Title: Re: 750S The Build is Done
Post by: Bigbear on March 22, 2017, 05:06:44 AM
Absolutely fantastic re-build.
Just started reading tonight & will now have to revisit each night to get through such an informative thread - a real credit to you Jim.
Picked up so many tips, which at my age I should have used long ago! Bearing drifts - heard of patience/dogged determination?!
I have just started converting a 3000mile Centauro to a (Daytauro)?, so at least all the bits are new & if I can mod the existing e.g rear subframe then I save a lot of work (even if I already purchased said 1100 subframe, blasted, Hot zinc metal sprayed & enamel painted it!)
Did you consider building up by metalspray fot your discs & machining back? I have previously had my 1100 forks machined then S.S. metal sprayed & machined - cheaper than re chroming & although not so shiny (slightly dull) they will also resist any possible rusting.
Again FANTASTIC work & informative unselfish know how shared with us all  :bow:
Bill -
(http://thumb.ibb.co/hast5a/image.jpg) (http://ibb.co/hast5a)

i want to upload my photo on facebook (http://imgbb.com/)

(http://thumb.ibb.co/eXo85a/image.jpg) (http://ibb.co/eXo85a)

best image hosting (http://imgbb.com/)

(http://thumb.ibb.co/ctr6rF/image.jpg) (http://ibb.co/ctr6rF)
Title: Re: 750S The Build is Done
Post by: canuck750 on March 22, 2017, 03:06:45 PM
Did you consider building up by metalspray for your discs & machining back?

Thanks Bill, I have never heard of metal spray ? Sounds like a great idea, I have a half dozen Brembo discs that are too worn to machine.

I will have to look into the process, I wonder if anyone local to me does this. I am in the heart of the Canadian oil service industry, there is probably someone offering this.

Cheers

Jim
Title: Re: 750S The Build is Done
Post by: 750S3 on March 22, 2017, 05:25:28 PM
I think these boys do in Kingston, ON
http://www.georgeawright.com
I looked them up sometime ago.

Luca
Title: Re: 750S The Build is Done
Post by: twowings on March 22, 2017, 05:34:38 PM
Glad to be of help!

My son added some red stripes to the fairing using vinyl rather than paint. A very good match as well.

(http://i249.photobucket.com/albums/gg217/canuck750/1974%20Guzzi%20750S/IMG_1127_zpsfqmdwnoe.jpg) (http://s249.photobucket.com/user/canuck750/media/1974%20Guzzi%20750S/IMG_1127_zpsfqmdwnoe.jpg.html)

You done good...many happy rides!!  :bow: