[???(Jettin Problem) 13.5/1 stock bore and pipe???] - ATV Riders Forums - Honda, Yamaha, Suzuki, Kawasaki, Polaris, CanAm, Arctic Cat, Kymco ATVs

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???(Jettin Problem) 13.5/1 stock bore and pipe???
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Posted by: markk

Alright a friend of mine just purchased a 450r and the person who owned it b-4 had it all tricked out. But he sold it as a pretty well stock bike. My buddie is running a stock exhaust,filter,cam,carb, so i was wondering what his carb setting should be, and will 13.5/1 make a diffrence on the jets.

Whats the stock main jet size? and what size main jet would u think we should run with the 13.5/1 piston?
Whats the air/fuel screwm mixture should be. How many turns?

ANy help would be great.