low compression, new piston only?
my af1 125 is reading about 110PSI on a compression test. So i figure its time for a new piston.
My question is, do i just order the same size piston as is in there or do i order one that is one step bigger?
Also , in the dirtbike scene there is an endless discussion on whether or not to hone a nicasil cylinder when changing pistons.
Some say you need to ballhone it, others say that nicasil is so hard that honing wont do any good and the piston rings dont settle like the way they do in steel cilinders.
What are your opinions about this?
Lastly , has anyone got any experience with using ROTAX MAX pistons in a rs125 instead of wiseco or wossner or the likes? this being single ring pistons, how long would they last in a rs125?