Clifton Posted August 16, 2005 Share Posted August 16, 2005 http://www.mototuneusa.com/break_in_secrets.htm Quote Link to comment Share on other sites More sharing options...
dr_hunt Posted August 17, 2005 Share Posted August 17, 2005 In the old days, a rough hone, say 280 to 320 grit was common place, when the engine ran only for several hundred miles, oil consumption was apparent. Dissassembly revealed that the rings were in fact worn out due to the rough hone and never seated. correctly. I think it was Smokey Yunick that advocated not honing at all and leaving a smooth bore on refreshening of race engines that still had round bores. I've never had a problem with race engines running them hard right off the bat, but if the bottom end clearances are tight, you will notice that they take time to free up. This is my experience. Quote Link to comment Share on other sites More sharing options...
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