I have a Twister with a GY6 150cc motor. Took it to west Texas where
it was rode like an army mule. Started smoking badly. Pulled the head.
Cylinder was scored. Bought an oversized cylinder from Awesome
Buggies. Top of new piston is 2.260", skirt is 2.283". New cylinder
bore is 2.292".
I'm running synthetic 10w-40 oil.
My problem is that this thing smokes like an old Cheech and Chong
movie.
I have the motor apart right now and am about to order new valves and
seals. Is my piston to cylinder bore clearance correct. It sure seems
loose to me?
Any help would be appreciated.
Thanks
i_r_

PS. I want to buy another buggy but can't justify it with this one not
running.