I'm not sure how, but my kid talked me into porting and polishing his BZM motor.. am part way through polishing the intake side of the engine cases at the minute and doing a fair bit of clean up.... I'll post more pics as I go... Anyone know of any particular do's or don'ts specific to...

Hey guys I got around to tearing down my pocket bike motor for ***** and Gig's which is actually proving to be helpful. Turns out the motor was running pretty hot, the gaskets were all shot, and I want to upgrade my piston. However I need some help on info- my piston seems to be a stock cast...