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Everything Dirt Bike
General Dirt Bike
To drill, Or not to drill?
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<blockquote data-quote="jbird710" data-source="post: 232453" data-attributes="member: 132"><p>I've run several CR500s in the last nearly 40 years and I never drilled any of my pistons. BUT, I have never been a pro or intermediate racer, my bikes all ran race gas mixed with synthetic 2 stroke oil, and I did top end tear downs more frequently than was recommended. I would think it depends on how hard you ride the bike and what extremes the engine operates would determine if it's really necessary.</p></blockquote><p></p>
[QUOTE="jbird710, post: 232453, member: 132"] I've run several CR500s in the last nearly 40 years and I never drilled any of my pistons. BUT, I have never been a pro or intermediate racer, my bikes all ran race gas mixed with synthetic 2 stroke oil, and I did top end tear downs more frequently than was recommended. I would think it depends on how hard you ride the bike and what extremes the engine operates would determine if it's really necessary. [/QUOTE]
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Everything Dirt Bike
General Dirt Bike
To drill, Or not to drill?
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