2015 V7 Engine and box into V65tt with Carbs

[v65tt]

Ok so project ultimate TT has started.

Plan is to take a 600mile V7 stone engine and gearbox and fit them into my 1984 V65tt

Having done a lot of research and measuring  the niggle list is :-

1) Standard gear ratio (primary gears) on a 2015 V7 is too high for a bike with 18" rear wheel[/li]

2) No output for a mechanical tacho or drive for points / dyna's

3) will carb manifolds fit V7 Heads

4) will exhaust fit v7 head

5) what starter motor to use

6) will V65 TT drive shaft splines fit new V7 gearbox ( 5-speed)

7) mating v65tt wiring to ducati type regulator   ( v7 stone crank nose is different from v65 etc, so have to use 320w ducati alternator

8) Recessed spark plugs will need different caps)

9) oil pressure and neutral wiring

10) fitting swing arm

11) breather plumbing

12) remove timing sensor

13) are frame mounts the same ( and will it fit!)
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1) my v65TT has monza primary gears that are perfect for me, this also give same input spline size, removed bell housing on v65tt box and v7 stone box and primary gears swapped over with no problems!

2) originally I had planned to use a v65 cam shaft and front cover, changed plan to fitting modern Elektronik-Sachse ZDG3 to the ducati alternator as I wanted the rev limiter and adjustable curves - cam and front cover from the v65 engine does fit if you want to go this route.

I sourced a nice 80mm electronic chronographic tacho to replace the veglia mechanical unit

3) the standard small block inlet manifold bolt straight on to the V7 Stone heads, you can even use the V7 bolts and gaskets, port matching almost perfect . Temp sensor on right hand head can be removed or poss utilised for a temp gauge?



carbs and original air box all fit with no problems



4) Standard V65 exhaust front pipes fit the V7 Stone head using v65 collets and flange, you need to loosen the front pipes from the silencers as the 750 block is slightly wider than the 650 but it all bolts up with good port matching and no issues once the front pipes are move out a few mm. V7 or v65tt gaskets can be used



5) the v65 valeo starter wont fit the later v7 bell housing, so I used the later one that came with the v7 stone engine/box. Battery lead and wiring connect up with no problems



6) V7 gearbox casing is same as the v65 , and uses the same 12 spline shaft ( people with earlier small block that use 10 spline shafts would need to source a new shaft), v65 gear leaver ball joint fits back of box , as does the v65 clutch cable.



7) mounted regulator to front of frame and connected direct to battery ( + and - ) , added frame ground , connect to switched ignition and connect dash charge light

8) the guzzi oem spark plugs caps  are very expensive but after a bit of digging they are NGK VD05EM 120deg LONG 5ohm plug caps, got 2 for less than �20 (GPB) delivered , v65 plug leads are shortened with wire cutters and the new caps screwed in




9)  swap round connector on oil pressure to later spade terminal,  cut off plug from neutral switch and connect to v65 neutral light wire. charge and neutral lights both work as expected

10) Swing arm mounts are identical to the v65 box ( and v35 box i have) and swing arm with spacer fitted straight on



11) rocker box breathers and rear sump level oil return are identical to the v65 and you can just connect original pipes, i took option to add the v7 non return valve

12) timing sensor gets bolts through the front timing cover ( near location where mechanical tacho feed fits) , had a 2mm stainless plate laser cut at work the blanks the hole ( used original bolts and o-ring) to stop dirt getting in or oil blowing out

13) see pictures :-)









Fuel tank clears the valve covers and the side covers clear the carbs


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I cannot start the engine yet as the ignition kit has not arrived yet.

interesting trivia the v65 and v7 stone rocker boxes are same underneath and if they look better I could use my original covers ( gaskets are the same)

[Chuck in Indiana]

Ya gotta love small block parts interchangeability. . 

[chuck peterson]

That looks like hell of a lot of fun

[v65tt]

Ya gotta love small block parts interchangeability. . 

Certainly makes life a lot easier for older bike owners!!

Now just need to find a graph showing the v7 ignition advance curve and im almost done!

[v65tt]

almost finished 


Stainless cover to block old timing sensor hole






The finished article ( with her sister TT behind)

[SED]

Wow Iain, that is cool!

Have a V50 Monza that is a bit long in the tooth and keep scouting for a V65 engine and gearbox, but it seems there are many more V75 engines and gearboxes out there.  LOTs of valuable information on interchangeability in your thread.     Who'da known that the V75 valve covers were the same underneath?

Thanks!
Shawn

[v65tt]

Wow Iain, that is cool!

Have a V50 Monza that is a bit long in the tooth and keep scouting for a V65 engine and gearbox, but it seems there are many more V75 engines and gearboxes out there.  LOTs of valuable information on interchangeability in your thread.     Who'da known that the V75 valve covers were the same underneath?

Thanks!
Shawn

If your in the UK there may well be a v65 engine and box for sale here... 😜😱

[Chuck in Indiana]

Nice job.. 

[John A]

Incredible! Thanks for the pics, nice job indeed.

[265coupe]

Great job. What's it like to ride?

[v65tt]

Great job. What's it like to ride?

It's 3 degrees C here and raining at the moment. Will wait until we get a better day for a test ride.  MX tyres are not nice on cold wet slippy roads.. eps with a new engine!

[malik]

Very well done. Congratulations. Opens up a realm of possibilities.

[lawries]

Hope Guzzi are watching. That's one I would buy.

[265coupe]

It's 3 degrees C here and raining at the moment. Will wait until we get a better day for a test ride.  MX tyres are not nice on cold wet slippy roads.. eps with a new engine!
[/quote]

Yes, understandable. On the other side of the world it's 30 degrees C, warm and sunny. Makes it easy to forget the suffering of others. Cheers. Have fun when you get it out.

[v65tt]

Very well done. Congratulations. Opens up a realm of possibilities.

With spares rapidly drying up for the early small blocks this route looks an excellent solution

Soon as weather starts to improve I will get her on the road and see what she rides like

[jacksonracingcomau]

Nice bike, well done, welcome to Luddite club, a few of us on here, carbie people in a world of fool injection
Guess engine etc came up cheap, doesn't happen in Aus but I could build something similar in UK if engines available, I know where a 65 TT has been languishing for 25+ years,  do these engines come up regularly ? How much ?

7) mounted regulator to front of frame and connected direct to battery ( + and - ) , added frame ground , connect to switched ignition and connect dash charge light

One word of warning FUSE
I had (possibly identical--from Cali 1100) a Ducati rec reg pop and start smoking riding along, just as I pulled in main fuse blew
If it hadn't there was big fire on the cards, the thing was smouldering but nothing live to keep it going

DON'T just put in line fuse to reg, if I'd had this and not smelt it, the thing would have kept running while box of tricks burnt from AC wires going in, at very least it would have destroyed those wires.

I've always run one main fuse between battery and everything, stems from fixing early Guzzi wiring with unfused ignition switch and then complete ignition circuit, more than a few caught fire. Your TT  is/was prob like that too, unfused wires all over the shop

Took 35 years to prove itself on my bike but glad I did, disconnected wire to reg, new fuse, rode off happy, new rec reg a couple of days later, all done[/list]

[v65tt]

Nice bike, well done, welcome to Luddite club, a few of us on here, carbie people in a world of fool injection
Guess engine etc came up cheap, doesn't happen in Aus but I could build something similar in UK if engines available, I know where a 65 TT has been languishing for 25+ years,  do these engines come up regularly ? How much ?

One word of warning FUSE
I had (possibly identical--from Cali 1100) a Ducati rec reg pop and start smoking riding along, just as I pulled in main fuse blew
If it hadn't there was big fire on the cards, the thing was smouldering but nothing live to keep it going

DON'T just put in line fuse to reg, if I'd had this and not smelt it, the thing would have kept running while box of tricks burnt from AC wires going in, at very least it would have destroyed those wires.

I've always run one main fuse between battery and everything, stems from fixing early Guzzi wiring with unfused ignition switch and then complete ignition circuit, more than a few caught fire. Your TT  is/was prob like that too, unfused wires all over the shop

Took 35 years to prove itself on my bike but glad I did, disconnected wire to reg, new fuse, rode off happy, new rec reg a couple of days later, all done[/list]

Wise words regarding the fuse, have got a 30amp in line between regulator and battery.  Have also got a fuzeblock kit giving me 4 switched and fused feeds with a ground rail. My TT's both have 4 fuses in the factory box.


Fair few Breda 750 and v7 / Nevada efi engines on market . Check eBay of all places

[v65tt]

My Elektronik-Sachse ZDG3 ignition system (for ducati alternator) came today, took about 1hrs to fit and get setup on the V65TT / V7 hybrid


Im very proud to announce  that my Moto Guzzi V7TT  Started FIRST TIME and runs really well

Its -3 and the road out side my house is white with ice so no proper test rides today, but a quick ride up and down my 150m gravel drive shows it has lots and lots of grunt!

https://youtu.be/c-cy55HuNHk for a quick shaky first startup video!

Only minor niggle is the ignition pick up hits the plastic timing cover and needed spacing about 8mm, will cut a nice alloy spacer to finish the job tomorrow

[Steph]

Nice video, I'm impressed, a guy in his garage can do something the factory seems unabled to do.

Who's next? Who's going to show us a nice Eldorado with a roller cam 1200 engine in it?

[DC950]

Hope Guzzi are watching. That's one I would buy.

+1

great job!

[WitchCityGuzzi]

I've often wondered if this kind of thing was possible. I'd like to get my hands on a clapped out old NTX and do this to it. Seems like it would be an awesome package.

[v65tt]

I've often wondered if this kind of thing was possible. I'd like to get my hands on a clapped out old NTX and do this to it. Seems like it would be an awesome package.

Its a relatively easy conversion,  same basics should apply to any small block v35-v75 lario.

Just had a gentle ride out and it goes very well, lots of grunt, from 2500rpm upwards it pulls very hard. 

[Chuck in Indiana]

That first startup is a great feeling isn't it? Attaboy..

[v65tt]

That first startup is a great feeling isn't it? Attaboy..

Thanks Chuck 

did about 4 miles  ( the temp was 3 deg C) and enjoyed every minute, returned home to sort minor exhaust leak, heads on V7 have deeper exhaust ports so used 2 gaskets to give decent seal and did another cautious trip round block and it's perfect 

[v65tt]

Been out and had the best 30 miles of TT yet, about 12 degrees here and perfect for riding the back roads.

V7 engine works really well, pulls from about 1500 rpm cleanly to the rev limiter at 7600 in any gear, no idea on top speed as I run out of speedo at 7000 rpm in 3rd gear

once you hit about 3000rpm the power just piles on ( more than the TrialWing can deal with on a damp road in the lower gears) cleanly and with no let off tlll the Electronic ignition unit gently cuts in.

I help at a local Moto Guzzi dealer on Saturdays and get to regularly ride v7, v7II and Stelvio NTX,  the Carb fed V7 engine feel much much sharper than the V7II I rode recently and has a much more progressive power curve then the OEM EFI motor