i have a 36mm klein carb on my bike i was wondering what everyone thinks is the proper main jet size. I have a bill's pipe exhaust, uni filter, stock reeds, the cylinder is bored .60 over and it has a hot rod crank and rod i currently have a 155 in there and its still black so what do yall think?

 

anyone know?

 

It is dificult to say because every quad set up is different. I would start with 165 and go from there. Take off your airfliter box cover.