hey did you check the o rings between the cylinder and the head may have one pinched
my bike now is all made out of junk yard parts
the guys that spend 4k on theirs
get pissed when the ole dog passes em they really get pissed when i tell em i
got a couple hundred bux in it

 

yeah i checked everything! but it is running great now so whatever! now i can go pop some wheelies!

 

how can you put a piston in upside down?????

 

ok for those who keep asking "how can you put the piston in upside down" here is the answear on the piston there are two groves where the valves end up going into one is larget than the other one for the exaust port and one for the intake port like i said one valve is bigger than the other "i believe it is the exaust valve that is larger" anyways if ith piston is in wrong the valve will hit on the piston ending up bending valves and screwing **** up! including your piston

 

intake is bigger and it should go UP