Help with jetting just installed V3's

[hotrodbanshee]

Installed v3's in my shee and now it misses/cuts out at WOT. When I had stock reeds it ran fine. I had 310 mains installed. The plugs looked to me maybe a little on the light side. I was thinking of going up to 320 mains? Any opinions? When adding V3 reeds will it lean out the carbs some?

 

P.S. Mods below

[bansheeseat$$]

Go to 360's.I have found that v-3's need atleast five sizes bigger then stock reeds do.Even though they say no jeting required.I had to go up nine once on a cr 125.start there and do some plug chops to see if that is to much or not enough. :beer:

[dajogejr]

I would check for air leaks first.

Kai and I disagree on this one, but it's all good. I've never had to go more than one size on a main for JUST a VForce installation, sometimes lean out the needle one clip.

 

These reeds actually richen up the midrange...so, the fact you think you're that lean tells me you might have an air leak.

 

Just a thought.

[hotrodbanshee]

I sprayed carb cleaner all around the carbs and intake while it was running and no change in engine rpm. That's the only way I know to check for leaks.

I would check for air leaks first.

Kai and I disagree on this one, but it's all good. I've never had to go more than one size on a main for JUST a VForce installation, sometimes lean out the needle one clip.

 

These reeds actually richen up the midrange...so, the fact you think you're that lean tells me you might have an air leak.

 

Just a thought.

[bansheeseat$$]

I sprayed carb cleaner all around the carbs and intake while it was running and no change in engine rpm. That's the only way I know to check for leaks.

 

The other way is to do a engine pressure test.You may have a base gasket or crank seal leaking.

[hotrodbanshee]

I put in 320 mains and the plugs did not get much darker and still cuts out some. I am going to go up to 360 mains and see what happens. If it starts to bog down on me I will back off a size or too.

[jbooker82]

Did you trim down the rubber intake boots good enough? I would check that over to make sure.

[hotrodbanshee]

Yes i did. They are cut smooth.

Did you trim down the rubber intake boots good enough? I would check that over to make sure.

[scooter]

i didnt have to rejet after installing mine but im at a higher elevation

[Ting Ting]

I have about the same setup an I have 340 in mine and a 30 pilot and the needle in the third clip. I'm at the same elevation as you

[quickbansheeman]

i have the same problem with mine :: i took my bike to glamis after installing v-force 3 reed when i ran the bike, as soon as i hit fouth gear the bike would run on one cylinder i just gave up on it, :shoothead: let me know how yours result