jetting my quad

[96dragbanshee]

i have a 1996 banshee with 66mm wiseco pistons toomey t-5 exhaust and clamp on k&n airfilters i have the stock carbs with 300 main jets. My elevation is at 909 feet. It does not run right what size mains and pilot jets should i be using. It stalls as soon as i take off then it goes. Should my jets be bigger or smaller?

Thanks

scott

[23champ]

raise your needles all the way up. Or better yet get a Dyno Jet jet kit

[sredish]

Sounds like it could be a pilot but most likely a needle issue, but not a main issue, if it's right when you hit it. What pilots are you running and where's your needle? Put it in the 4th clip down (from the top / blunt end).

 

Here's a chart that shows what carb circuit affects what what throttle position.

 

[BMackKC]

I have the stock pilot jets and it is already in the fourth position. Should i be getting 27.5 polit you think?

I tightened the air screw all the way in and backed both out equally that kind of helped. I am still losing take off and mid range power the top end power is nice.

[sredish]

I'd try some 27.5s or maybe even 30s and see how they work. That might give you the fix.