damge piston?

[kashkha]

i change the piston and the cranckshaft .
i put a 7mm cranck and a cp piston.
what should i do? can i go fast? or on which gear?
some guys said for me you should finish 3 tanks on the 3rd gear. :-/

 

[yamarider]

You just gotta mix your riding, and avoid anything that's going to really work the motor hard. You can take it up into the higher gears as long as your on a level section, you can take the rpms up pretty high, just take it easy on the throttle and don't beat the **** out of the thing until the rings get set into place and everything starts getting broken in. The longer you ride it, the harder you can get into the throttle, and after you got a tank and a half through it or something like that, then you're to the point that you can pretty much do anything.

 

[jasonp]

change the oil after the first couple hours and then ten hours later. You'll find lots of **** in the oil.