Author Topic: New G5 Project  (Read 22540 times)

Offline Antietam Classic Cycle

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Re: New G5 Project
« Reply #90 on: March 01, 2017, 04:45:30 PM »
Thanks Charlie. I'd be interested if you have a decent spare float. They're 10gr.

I have used and new in that weight. Which style do you have?




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Offline Antiquar

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Re: New G5 Project
« Reply #91 on: March 02, 2017, 12:18:35 AM »
My other floats are the new style. Thanks again  :azn:

Offline Antiquar

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Re: New G5 Project
« Reply #92 on: March 06, 2017, 01:26:35 PM »
My aluminum tank arrived today.  I'm pretty happy with it. Not perfect but with some buff & shine, or a paint job, it will look great. I did a test fitting on my T3 to ensure fit, and it sat happily on the tonti frame. It is a bit longer than my T3/G5 tank, so I will probably have to make alternative seating arrangements than re-use the stock G5 seat.

It uses a thread on cap instead of the Guzzi cap. Guzzi petcocks threaded right on, though.

I was originally planning to paint it, but now I'm considering running it bare.







Offline Groover

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Re: New G5 Project
« Reply #93 on: March 06, 2017, 02:31:59 PM »
Leave it like that I'd say. From the photos it looked like your seat had a gap, is that still not enough space to clear? Is the tank coated in any way, or would it need polished to maintain it like that?

Maybe you can bring the green you mentioned into that somehow. JoeW has an 850T thread with a similar tank (may be the same?). His turned out nicely, so I'm sure yours will be next!
« Last Edit: March 07, 2017, 07:38:48 AM by Groover »
1981 Moto Guzzi V1000G5
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Re: New G5 Project
« Reply #93 on: March 06, 2017, 02:31:59 PM »

Offline Antiquar

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Re: New G5 Project
« Reply #94 on: March 07, 2017, 11:15:25 AM »
Leave it like that I'd say. From the photos it looked like your seat had a gap, is that still not enough space to clear? Is the tank coated in any way, or would it need polished to maintain it like that?

Maybe you can bring the green you mentioned into that somehow. JoeW has an 850T thread with a similar tank (may be the same?). His turned out nicely, so I'm sure yours will be next!

Good memory, it may yet fit. Will bring it by the G5 to give it a proper test fit.

There's no outer coating, so at the very least it would need to be treated in some way. If I do paint it, I'm considering a black/green paint job while leaving the knee cutouts aluminum. Lots of options to consider.

I've been reading that 850T thread this morning. Great looking bike. Very nice work.

Offline Antiquar

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Re: New G5 Project
« Reply #95 on: March 15, 2017, 11:43:15 PM »
It's been a busy week. I received a package or two from MGCycle and mounted the carbs & air filter on the bike. Also a lot of bits. Here's how she looks as of tonight:



You can see I upgraded to a modern charging system with the Euromoto kit. I fabed a quick n dirty bracket for the reg/rec that sits above the alternator. I've also begun to wire the bike. I will be using a Motogadget m-Unit, which is a very fine piece of kit. I am mounting it behind one of the side covers, again with a quick and dirty bracket. I will cook something better up before actually riding the bike any distance.



I've also gone ahead and started the bike, and am very happy to say that she runs. The carburetion is rich at the moment--the bike starts up without choke from cold, and you can smell gas in the exhaust. It's possible that I set the float level too high, will have to readjust the carbs again, but that can wait. You can find a link to a short (and poor) video of me riding the bike 20 feet below. :)

Right now I'm working on wiring up the bike properly, will be a while before I gather the wires in a proper harness. I've also ordered gauges from Speedhut and will fabricate an instrument cluster around those when they arrive.

G5 Project Takes Its First Steps
« Last Edit: March 15, 2017, 11:44:44 PM by Antiquar »

Offline Groover

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Re: New G5 Project
« Reply #96 on: March 16, 2017, 02:02:14 PM »
Nice progress, getting the bike started for the first time after working on it so much is definitely a great feeling! Looking forward in seeing the dashboard project.
1981 Moto Guzzi V1000G5
1987 Moto Guzzi LM1000SE, a
1987 Moto Guzzi LM1000SE, b
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Offline Antiquar

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Re: New G5 Project
« Reply #97 on: March 25, 2017, 06:35:56 PM »
Steps in the wrong direction...

I mounted my T3 tank to the G5 to take it for a spin a week ago. It ran pretty well, except for a badly dragging clutch. I readjusted the clutch lever (both at the gearbox & handlebar) to no avail. It had to come apart again.




I was happy to see that there was no evidence of leakage in the bellhousing. The intermediate plate was slightly bent, and the flywheel slightly notched, which would account for the dragging.

Instead of replacing the worn parts I opted to try out a RAM clutch for this project.



The new RAM clutch's pull is incredibly light. I'm looking forward to seeing how it performs on the road.
« Last Edit: March 25, 2017, 08:10:36 PM by Antiquar »

Offline Scud

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Re: New G5 Project
« Reply #98 on: March 26, 2017, 02:01:21 AM »
You're gonna love that RAM clutch. Super-easy pull as you already noticed. Quick connection and easy shifting. Depending on how heavy your original clutch was, you may even notice the engine rev faster and settle into downshifts faster.

Great progress.
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Offline Antiquar

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Re: New G5 Project
« Reply #99 on: March 27, 2017, 10:48:11 AM »
Mounted my sidecovers (thanks Groover) on the pins provided by Charlie. Once I stripped the old paint I rather liked the bare metal look--so I painted a 1000s inspired stripe and clear coated the covers.






I plan to use a similar scheme for my aluminum tank. I've also acquired a beat up but restorable fender & seat from a Lemans 2 that will better suit the tank.

Still waiting for my Speedhut gauges. I want to fab the dash and mount it before wrapping up my electrical harness. The bike is coming along.

Offline Groover

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Re: New G5 Project
« Reply #100 on: March 27, 2017, 01:15:06 PM »
That's looking great! I can't say I've seen another Guzzi with the bare swirl brushed pattern on the sheet metal pieces. Are you going to clearcoat them?
1981 Moto Guzzi V1000G5
1987 Moto Guzzi LM1000SE, a
1987 Moto Guzzi LM1000SE, b
1980 Piaggio Vespa P200E
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Offline Antiquar

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Re: New G5 Project
« Reply #101 on: March 27, 2017, 02:24:46 PM »
Thanks Groover. They acquired the pattern as I was using a wire wheel to strip 'em. I did apply a couple layers of clear after painting the stripes, so these covers should be good to go.
« Last Edit: March 27, 2017, 05:16:08 PM by Antiquar »

Offline NCAmother

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Re: New G5 Project
« Reply #102 on: March 31, 2017, 11:57:14 PM »
I really like the air filter setup.  I don't have an airbox for my 850T, was this a direct drop in from K&N?  I was thinking of using separate filters but really like your setup better
Nate

Offline Antiquar

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Re: New G5 Project
« Reply #103 on: April 01, 2017, 07:24:14 PM »
Yeah, you can get it straight from K&N. I know MGCycle also carries them. MG2640

It is a bit finicky to get seated on both carbs.
« Last Edit: April 01, 2017, 07:26:44 PM by Antiquar »

Offline Antiquar

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Re: New G5 Project
« Reply #104 on: April 07, 2017, 11:05:50 PM »
Here's how she looks as of today:



I decided against painting the tank (actually painted a corresponding stripe then stripped it off). The tank is too beautiful in its polished aluminum brilliance.

A lot else has happened. I installed new FAC dampers and progressive springs in the front suspension. I painted the lower forks, as you can see. I've delinked the brakes, using a 15.8m kawasaki master cylinder to drive the front calipers. I will use the same rear caliper, or at least try to. I am waiting for more brake line to get the rear operational.

I found a Lemans mk 2 rear fender and seat, which you can see attached to the bike. The seat is a bit worn. I am looking to replace or restore it eventually--there is no rush here for me.

I wired the bike and wrapped the harness. All that is left for electrics is to wire (and fabricate entirely) the dashboard and front turn signals.
« Last Edit: April 07, 2017, 11:34:33 PM by Antiquar »

Offline NCAmother

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Re: New G5 Project
« Reply #105 on: April 10, 2017, 12:37:51 PM »
One beautiful bird my friend.....
Here's how she looks as of today:



I decided against painting the tank (actually painted a corresponding stripe then stripped it off). The tank is too beautiful in its polished aluminum brilliance.

A lot else has happened. I installed new FAC dampers and progressive springs in the front suspension. I painted the lower forks, as you can see. I've delinked the brakes, using a 15.8m kawasaki master cylinder to drive the front calipers. I will use the same rear caliper, or at least try to. I am waiting for more brake line to get the rear operational.

I found a Lemans mk 2 rear fender and seat, which you can see attached to the bike. The seat is a bit worn. I am looking to replace or restore it eventually--there is no rush here for me.

I wired the bike and wrapped the harness. All that is left for electrics is to wire (and fabricate entirely) the dashboard and front turn signals.

Offline Antiquar

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Re: New G5 Project
« Reply #106 on: April 16, 2017, 04:35:08 PM »
Thanks NCA!

This week I got my gauges on.


They were easily mounted with some cups from Speedhut bolted to some simple bar stock run along the upper triple clamp. The Speedhut gauges are very nice, really have nothing but good things to say about them so far. Very simple to wire up.

I've also started the tuning process. I retimed the bike and verified that the advance mechanism is working correctly. Running the bike with the carbs as I got them showed lean carburetion (by examining the plugs). So I swapped in 142 mains and 265 atomizers. The carbs were already equipped with 60 pilots. I left those in.

Power is OK all around, though I am hoping to get a bit more out of her.

Offline Groover

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Re: New G5 Project
« Reply #107 on: April 17, 2017, 02:08:39 PM »
Nice job with the instrument cluster. I do like those gauges, will definitely consider them in the future.

What size were the main jets before putting the 142 in? Curious what you end up doing to gain a little power. Did it have more power before upping the jets?
1981 Moto Guzzi V1000G5
1987 Moto Guzzi LM1000SE, a
1987 Moto Guzzi LM1000SE, b
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1980 Piaggio Vespa P125X
1980 Vespa Grande Moped
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Offline Antiquar

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Re: New G5 Project
« Reply #108 on: April 17, 2017, 04:48:35 PM »
Nice job with the instrument cluster. I do like those gauges, will definitely consider them in the future.

Thanks Groover. Just have to find a place for some idiot lights for the dash. Were I to do it again I would buy one of the all-in-one units, containing a speedo, tach, and idiot lights in one gauge.

Quote
What size were the main jets before putting the 142 in? Curious what you end up doing to gain a little power. Did it have more power before upping the jets?

The old mains were 125. The 142s seem to help the top end but I think I'm running a bit rich on the transition phase, just off idle. Might try lowering the needle.

I also tried the stock 50 pilots, but in that case idle was running incredibly lean--spitting and backfiring. Perhaps my float level is a tad low, about 24mm, but in either case replacing the 60 pilots yielded a smooth idle.


I installed a Dyna ignition, which according to the marks on my RAM clutch is timed correctly, but that is another variable to consider. I tried advancing by a few degrees but that caused idle to suffer.

Right now the G5 feels about as fast as my T3, perhaps a touch slower, which isn't bad as the T3 recently got a brand new top end. I think I might be expecting a bit too much from the old girl.

Isn't tuning these old bikes fun?  :laugh:

Offline Antiquar

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Re: New G5 Project
« Reply #109 on: April 20, 2017, 11:26:56 AM »
Took another crack at carburetion yesterday. Reset both floats to 23mm, kept the same 142 main and 60 pilot jets. Dropped the needle to the 1st notch. Running rich at idle but pretty damn good everywhere else. Might try 50 pilots next.

Offline Groover

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Re: New G5 Project
« Reply #110 on: April 20, 2017, 11:46:45 AM »
Have you played around with the low-end needle adjustment? Screw it in all the way, then back it our a few turns as a starting point. Screwing it out is to richen, screw in to lean it.

This one:



« Last Edit: April 20, 2017, 12:16:27 PM by Groover »
1981 Moto Guzzi V1000G5
1987 Moto Guzzi LM1000SE, a
1987 Moto Guzzi LM1000SE, b
1980 Piaggio Vespa P200E
1980 Piaggio Vespa P125X
1980 Vespa Grande Moped
1980 Vespa SI Moped
http://scooteropolis.com/

Offline Antiquar

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Re: New G5 Project
« Reply #111 on: April 21, 2017, 11:17:54 AM »
Have you played around with the low-end needle adjustment? Screw it in all the way, then back it our a few turns as a starting point. Screwing it out is to richen, screw in to lean it.

This one:





I have, but if I have the jets on hand I like to try.  :laugh: In fact, I popped the 50s back in and the idle was definitely too lean. I replaced the 60s and was able to achieve a decent idle with the mixture screw.

I think the main might be a tad too rich but I'm going to ride it as is for a while.

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