34mm or 35mm?

[Vmaxattacks]

I have heard conflicting stories. Some say Vmax carbies prior to '92 were 34mm and the latter are 35mm and others say they have always been 35mm.
I know the Ventures are 34mm.

Is this true?
Thanx,
Bud

 

[naughtyG]

AFAIK all years '85-'07 have the exact same carbs. There may have been slight changes in main jet sizes but that's it.

 

[[email protected]]

I can't confirm but everything I've read has said the carbs are all the same. That being said, I have read somewhere that the vboost butterflies in the 85's (maybe 86's too?) were a different size as was the exhaust or at least the baffle in the mufflers. Not sure if there is any truth to that but I know I've read it somewhere.

 

[gamorg02]

i've heard the same thing as mike

 

[Rhoy Carter]

I believe the 1200 venture carbs were 34 mm and the 1300 venture is 35 mm

 

[Vmaxattacks]

This is why I love this board!
Thanx for the help :eusa_dance:

 

[Thevmaxrider]

The carbs are the same. The 85's have the smaller Vboost butterflies and 1 less baffle in the exhaust. When Yamaha added the extra baffle they increased the size of the Vboost butterflies to maintain performance. A pristine set of 85 exhaust cans do add hp to a late model, or at least that is what I have been told by some oldtimers:worthy: