hi i have a 04 blaster the head is ported no air box lid full fmf exhaust and k&N air fliter i live at a low altitude area what size jet will u recommend me using i pre mix my gas and oil
Get rid of that junk mikuni carburetor , and buy a 28mm keihin from J & D jetting. Also remove the air box & put a clamp on k & n with a outerwear. Trust me you will regret not doing it sooner.
My Mobile Mechanic gotcha. Only reason I asked is because stock heads have different cooling fin configurations than raxe heads (the fins on the topside) yours are an indicator of a stock top. Good possibility of a rechamber though, or it wasn't and it was just a cleaned up stock top. Easy to tell if it was though
I cant say it is a "race head" its a stock head that was cut down to increase compression. Im going to port out the exhaust this winter and see where it gets me.
