kx/rm 65 compression

[shueyracing]

can someone please tell what the the compression should be on a stock kx/rm65 motor. thanks in advance

[GPracer2500]

A fresh engine should be around 130psi. If your getting anything lower than 100psi you're do for a top-end. Anything below 90psi and it should be obvious something is wrong even without testing the compression--it may not even run with less than 90psi.

[shueyracing]

thanks for the information. we are around 127, so we are good. thanks again