shlbyntro

hi there. i have a js440 with a built 650 dropped into. engine is not yet broken in and makes 180 psi dry and around 260 when i dribble a little oil in the cylinders so i figure she'll settle around 210-220 psi. running on vp c12

my question is i have a single keihinn cdk2 carb on it with as far as i know stock jetting and i need to rejet it, anyone know what range in jet sizes i should be playing with while tuning? i really dont want to buy the whole 50 pieces at $1 a piece

thanks for any help,
Breck