Need jetting help 28pwk

R3dtick

Member
Sep 7, 2016
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Im nearly done rebuilding a blaster i bought. it didnt run when i bought it so i have no idea where to begin with jetting. Mods are fmf gold fattty with freshly re packed powercore 2, uni filter with no lid, boyenson power reeds, fresh bore with wiseco piston kit 67.5mm, nology coil with hotwire, someone has done some clean up work on the porting, doesn't look professional but isn't bad work. I bought a pwk28 since the carb was broken. its currently on a stock needle middle clip, 42 slow jet with 185 main jet. where would a good starting jet point fall. I will be running 32:1 premix and was thinking about a 150 main and 48 pilot, But i dont want to burn down a brand new engine being lean. I will be watching break in temps with an infrared gun but still need help0 with a starting point.