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Dirt Bike Brands - Other
top end rebuild
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[QUOTE="rmc_olderthandirt, post: 1320753, member: 68872"] A full, change everything rebuild would also include the wrist pin bearing, which is probably another $15 or so. How long has it been since the last top end rebuild? You might be OK with just changing the ring. The gaskets you absolutely need are the head gasket and the cylinder base gasket. Don't even think about reusing these gaskets. If it has been years since the last rebuild or you don't know the history I wouldn't take any chances, I would replace every gasket that you take apart. If you plan on re-using a gasket, take careful note as you take it apart, any other gasket that tears or otherwise looks questionable needs to be replaced. Often times you can buy a gasket set for less money than buying the essential gaskets alone. A word of caution: Be sure to check the end gap on the ring before you install it on the piston. My experience is that the new rings are bit oversized, which allows you to get a very precise fit. You MUST put the ring in the cylinder (use the piston to push it down and get it straight) then use a feeler gauge to check the end gap. If the gap is too narrow, file the end of the ring a bit and try again. Failure to do this could cause a major seize as soon as the engine heats up. The second tip is to make sure you have the end gap of the ring in the correct spot on the piston. If you inspect the groove carefully you will find a tiny pin in the ring groove. The end gap on the ring settles over this pin and locks it in place. If you don't have the ring in the right spot the pin will hold the ring out and it will bind in the cylinder. [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
top end rebuild
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