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Everything Dirt Bike
General Dirt Bike
2008 Crf450r Piston and Rings bad?
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<blockquote data-quote="Mihylo33" data-source="post: 198434" data-attributes="member: 408"><p>Everything on race bikes is done on time and/ or tolerances. </p><p>I replace Pistons and rings about every 40hrs on a 2t and about 50-60 on a 4t. </p><p>However, I do the opposite on 4stroke valves. once they are out of spec I replace the valves. I follow no time clock on the valves other than inspect and shim as needed every 15hrs.</p></blockquote><p></p>
[QUOTE="Mihylo33, post: 198434, member: 408"] Everything on race bikes is done on time and/ or tolerances. I replace Pistons and rings about every 40hrs on a 2t and about 50-60 on a 4t. However, I do the opposite on 4stroke valves. once they are out of spec I replace the valves. I follow no time clock on the valves other than inspect and shim as needed every 15hrs. [/QUOTE]
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Everything Dirt Bike
General Dirt Bike
2008 Crf450r Piston and Rings bad?
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