Originally Posted by
J. Kłapacz
No, of course not, I used new SKF bearings, they are not RC bearings, but most of the motor manufacturers, as far as I know, do not produce bearings but use external companies. Could that be the reason?
When you break in a motor you're not JUST breaking in the P/S. You're breaking it in as a unit, P/S , piston and conrod, bearings to crankcase. Using "break in" bearings is a bad idea IMO. You're going to have to do break in when you put on the OG bearings.