300ex smoking

[mxrace5632]

I bought a brand new 330 kit with pistons and everything else but it smokes and i cant fiqure it out
All the gaskets,the oil ring everything is new , could the sleeve be put in krooked ? thanks

[2muchquad]

it could be the valve seals,look at those,they are pretty cheap to replace

[mxrace5632]

I put a new head on it to see if that ws it and it wasn't

[beak7707]

Was it broke in correctly? How much time do you have on it, if not much the rings might not be seated completely. I just got done rebuilding a basket case that smoked like no other and it took a few rides for it to clear up after the rebuild.