pilot jets? timing? cant get shee to hit powerband

[banshee4587]

cant get my shee to jet and ive tried about every size of main jet and havent changed my pilot have some on order now but the way i understand it your pilot jets are just for idle not mid range and my bike starts and idles great im going to try a 40 and 30 has a 50 now but i doubt that is going to make a difference. atv starts up great starts off great and as soon as you give it throttle it kind of bogs out i have athena big bore cylinders(392cc) bigbore cpis oversized radiator 34mm flatside mikunis k&npods. i have on order the pilots and a new needle jet it has a q2 but ordered p8s but im not sure thats going to be the problem because from 280 mains to 400 mains it didnt make a bit of difference. still did the exact same thing but when i have my fuel on off position it runs great hits the powerband and runs like its supose to but obviously you cant ride it like that. anyone have any input on what else it might be. the local shop kept telling me i need an adjustable timing plate but im pretty sure that shouldnt have anything to do with it because it runs right on off position. have 340 jets in now. thinks its close to the right mains. everythings clean and practically brand new. elavation 1400ft.

[GrMeyer]

You will have to remember this:

 

The air screw is most effective between idle through 1/8 throttle. The pilot (slow) jet is most effective between 1/8 through 1/4 throttle.

 

The jet needle is most effective between 1/4 through 3/4 throttle.

 

The main jet is most effective between 3/4 through wide-open throttle.

 

Also to only jet on a warmed up motor. You will have to work from the WOT and down. If you try to set your needle and then change the mains then the needle will be off. If your like me. I just leave my needle where it feels good all around and just jet the mains and work on my air screws. But then again im only jetting up or down 1 jet because of temps.

 

Just try to do some WOT pulls and see if it boggs (rich) or revs out with no power (lean).

If your running the bike with the fuel off and it runs better. Sounds like its rich. But then again you have another prob. Did you buy the carbs new or used? Did you set the float height?

[banshee4587]

You will have to remember this:

 

The air screw is most effective between idle through 1/8 throttle. The pilot (slow) jet is most effective between 1/8 through 1/4 throttle.

 

The jet needle is most effective between 1/4 through 3/4 throttle.

 

The main jet is most effective between 3/4 through wide-open throttle.

 

Also to only jet on a warmed up motor. You will have to work from the WOT and down. If you try to set your needle and then change the mains then the needle will be off. If your like me. I just leave my needle where it feels good all around and just jet the mains and work on my air screws. But then again im only jetting up or down 1 jet because of temps.

 

Just try to do some WOT pulls and see if it boggs (rich) or revs out with no power (lean).

If your running the bike with the fuel off and it runs better. Sounds like its rich. But then again you have another prob. Did you buy the carbs new or used? Did you set the float height?

 

bought them new. how do you set the float hieght?

[GrMeyer]

contact a builder on here and ask them if they have an idea of what the floats should be set. You might get lucky and someone will just reply it on here for ya