What jets do I need?

[Dane Edg]

I'm at 468 ft above sea level. Running pump gas 89 octane is all I can get 65.50mm pistons v force 4 reeds toomy t5s stock air box stock carbs timing advanced +4. I can turn my idle screw on my right carb all the way in and it won't die. What jets do I need?

[So Cal Suspension]

I'm at 468 ft above sea level. Running pump gas 89 octane is all I can get 65.50mm pistons v force 4 reeds toomy t5s stock air box stock carbs timing advanced +4. I can turn my idle screw on my right carb all the way in and it won't die. What jets do I need?

Well, first, since you are only running 89, I wouldn't run +4 timing. I'd back it down to +2, or even back to 0. Second, I would start at 310's and 27.5's and work your way down. Air screws 1.5 turns out, and needles on the middle clip.

 

Also, where do you live that you can only buy 89?

[Dane Edg]

In a small town I can drive a ways outa my way to get 93. Il do that from here on out

[Dane Edg]

If I can screw my idle screw all the way in and it don't shut off is it lean or rich?

[lil Doobie420]

when u screw it in make the bike rich when u screw it out it leans the bike up.

[So Cal Suspension]

Idle screw? or air screw?

[Stonytony]

The idle screw is only on the tors if you stock carbs. To achive idle on a banshee with tors removed you have to adjust your cable to pull the slides up. 30 pilot and 290 mains air screw 1.5 turns out with t5s is just right on my friends 4+ timing cool head 19cc 140 psi 110 octane only.