[Cylinder Porting?] - ATV Riders Forums - Honda, Yamaha, Suzuki, Kawasaki, Polaris, CanAm, Arctic Cat, Kymco ATVs

Pages:1

Cylinder Porting?
(Click here to view the original thread with full colors/images)

Posted by: Needmorehp

Guess I am going to do a mild budget Port Job, we only have a 20mm carb. so can't go too wild. Also need a Head or mod. mine. It is a 90, I went with 5 gram rollers, 2000 rpm springs, and a yellow torque spring. Going to lighten clutch. Any other ideas? Anyone know of a cheap variator, cannot find any for the 90's, had our 70 totally done. I found a stock CDI with a green wire.

Thanks