Re: i think my "80cc" has issues. top speed only 28mph with shifter kit...
Hey, You are not and should never run a brand new motor full out for a least 200 miles. The rings need to seat to the cylinder wall. If you have "glazed" the cylinder walls you loose compression and it will never get better. Varry your speed, don't go full throttle for at least a gallon or more and It will mos likely be fine.
Only Bikers know why dogs love to stick their heads out of car windows,