Breaking in a new motor?

1 reply to this topic
  • stnkbg1

Posted January 27, 2008 - 12:58 AM


I just got done rebuilding my YZ400 (now 426) motor, and I'm wondering how I should go about breaking it in, and if there's anything special I should do for the first running. I've done a couple fresh race car motors, but never a bike. I left the head on this one alone, but the cylinder, piston, rings, crank, and rod are all new.


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  • grayracer513

Posted January 27, 2008 - 11:53 AM




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