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Registered
Join Date: Aug 2006
Location: near Philadelphia, PA
Posts: 36
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polishing piston crowns and connecting rods
This is my first post here. I'm actually rebuilding two motors...one is a R1100s, and the other is a R1150 RT police bike motor.
I have heard conflicting thoughts. Should I polish my pistion crowns to a highly smooth finish?
My connecting rods are steel and rough casted. I'm going to balance the big and little ends and the overall weight. I was also thinking of grinding off all the casting marks and roughness and polishing them smooth. Any thoughts to this? I have no idea of BMW shot peened to remove the stresses through the conrods or not. So what are your thoughts? These motors are in quite the high state of tune as they are.
Thanks,
Sam
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1971 R75/5 restored and ridden hard!
1999 R1100s bought with blown motor. Now in resurrection!
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