Moto Guzzi V40 owner's manual?

[Asymonds1]

Hey there, have been looking for a manual for my V40 online for quite a while now and havnt found. Anybody have any ideas/links? This Guzzi is a 4stroke guzzi and i think is close to the V35 targa or imola. Any help is awesome

[SS90]

Hey there, have been looking for a manual for my V40 online for quite a while now and havnt found. Anybody have any ideas/links? This Guzzi is a 4stroke guzzi and i think is close to the V35 targa or imola. Any help is awesome

Is it a 4 Valve (Capri) or 2 Valve (Targa)?

[dangerous]

Is it a 4 Valve (Capri) or 2 Valve (Targa)?

Im fairly sure there is no 2v 400

[Asymonds1]

Its a the 1987 v40 capri. 4 valve

[dangerous]

Its a the 1987 v40 capri. 4 valve
some www's for you to check out
http://www.guzzi.com.au/
http://forum.guzzitech.com/forum/search/newposts
http://www.wildguzzi.com/forum/
bt the best would be http://www.v11lemans.com/forums/index.php

[Voltaire]

I've been resurrecting an 82 500 Monza and getting parts of German Ebay, they don't rob you for the post like the Yanks.

There is a thread on Wild Guzzi about a Lario 650 that you might find interesting.

My main concern when I get it running is replacing the valves as they are known to stretch and may be made of two parts.

Not sure if this is an issue on the 4 valve heads.

[dangerous]

My main concern when I get it running is replacing the valves as they are known to stretch and may be made of two parts.

Not sure if this is an issue on the 4 valve heads.
Ummmm... never heard of issues with 2v engines, the 500 is bullet proof, proberly the best they did... the 4v heads are grenades, 2 piece valves drop onto the piston... they reconmend GN250 valves, most have been sorted by now tho.

[Paul in NZ]

Ummmm... never heard of issues with 2v engines, the 500 is bullet proof, proberly the best they did... the 4v heads are grenades, 2 piece valves drop onto the piston... they reconmend GN250 valves, most have been sorted by now tho.

The valves are an issue but its not helped by the valve springs being very stiff (as in way too stiff) in an effort to slam them home quickly and allow higher rev's.

FWIW - while the 500 is a good engine the 2V 650 small block is definately the one to go for. Unless you like a challenge and then you tackle the 4V issues which many have done. The yanks and some europeans were making 750 and 810cc 4V motors that fair fly!!!!

I'd bet a sack full of sweat jock straps that the 400 4V is very similar to the Lario and could be enlargened fairly simply.

[dangerous]

The valves are an issue but its not helped by the valve springs being very stiff (as in way too stiff) in an effort to slam them home quickly and allow higher rev's.

FWIW - while the 500 is a good engine the 2V 650 small block is definately the one to go for.ahhh ok ta, I just hadent heard of the 2v engines having issues, is that with them all?
And again... I have never seen a 2v 650, I asumed they were all 4v'd the 650's the 2 valved engines jumping from the 500 to the 750?

[Paul in NZ]

ahhh ok ta, I just hadent heard of the 2v engines having issues, is that with them all?
And again... I have never seen a 2v 650, I asumed they were all 4v'd the 650's the 2 valved engines jumping from the 500 to the 750?

No - the 2 valvers are fine - just the 4v sporty jobs had silly valve springs.

There was a V65SP which was a pretty good thing by all accounts and then the 750's like the Nevadas and so on.

[Voltaire]

To be on the safe side I think 30 year old engine with 80k the valves should be replaced for peace of mind.
Are the current V7 range 2 or 4 valve?

[dangerous]

To be on the safe side I think 30 year old engine with 80k the valves should be replaced for peace of mind.
Are the current V7 range 2 or 4 valve?

I believe as of this year (bikes not here yet) they are now 4v heads

282798 282799


EDIT the V7 models receive a redesigned motor with increased compression, as well as refined fuel injection and engine management systems. These motors are not just mildly modified from last year’s unit, they feature more than 200 new or redesigned parts … roughly 70% of the engine components.

The result of these changes is a claimed, and welcomed, 12% increase in horsepower (now 51 hp) and 10% increase in torque (43 foot/pounds)

[Voltaire]

Are the heads still the Heron design with the chamber in the piston? I goggled it the other day and it dates from WW1 aircraft design
Interesting how Guzzi have used a design from the late 70's, I've replaced the 32 mm forks with 35mm ones and just got some V65 Konis for it, coupled up with the rebuilt triple brembos and a set of Bridgstones looking forward to some twisty road action.:niceone:

[Asymonds1]

mark and rolly from scooterazzi deal with my V40 here in wellington and afew comments have slipped of boaring it out to be a 650. just a nice little boost for the open road, since it sucks ass as soon as it reaches 100kph. reeving at 5000 on 5th gear.
could this be a good idea?

[Paul in NZ]

mark and rolly from scooterazzi deal with my V40 here in wellington and afew comments have slipped of boaring it out to be a 650. just a nice little boost for the open road, since it sucks ass as soon as it reaches 100kph. reeving at 5000 on 5th gear.
could this be a good idea?

Since its a shaft drive you would need to swap out the rear end for something with a higher ratio which would be expensive.

[Asymonds1]

Ahh great, thank you expensive moto guzzi

[Voltaire]

My understanding of the small blocks is the final drives are all the same and its the intermediate reduction in the gearbox that needs changing.
http://guzzitech.blogspot.co.nz/2009/02/guzzi-smallblock-tranny.html

Probably not worth the expense of fitting bigger cylinders as you may need to change the cam too....

[dangerous]

mark and rolly from scooterazzi deal with my V40 here in wellington and afew comments have slipped of boaring it out to be a 650. just a nice little boost for the open road, since it sucks ass as soon as it reaches 100kph. reeving at 5000 on 5th gear.
could this be a good idea?
can that be done with out replacment barrels etc? might give extra HP but as Paul says the gearing will still be the same.

[Paul in NZ]

can that be done with out replacment barrels etc? might give extra HP but as Paul says the gearing will still be the same.

You would need to do more research but as Dangerous says - you will be replacing parts not boring out the existing ones. Guzzi generally used plated bores which cant be over sized BUT the cylinders were relatively cheap anyway.

Most of the 400's were made for the Japanes market and were just bigger models with smaller pots. Guzzi always have periods where they are struggling to make money and they would have kept any 'special' parts for a 400 to the utter minimum.

Call Pete at Moto Kiwi as he is bound to know more...