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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
Normal break in or damage
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[QUOTE="2strokes4life, post: 1350102, member: 104797"] That is not a chunk out of the cylinder. It looks like it in the picture, but there is really not one. That is kind of weird. If the rings weren't in the groove you'd feel it. After I install a new piston in the cylinder I run it up and down slowly with the kicker to see if there are any problems before I button it up. I use the wet rebuild method. I am going to try the dry method on a future rebuild. The manual I use is a Clymer. If you read it, it tells you to break it in with light rides for 10-15 minutes, first in lower gears low rpm's then kill it and let it cool. Then it says ride again in higher gears again 10-15 minutes kill it and cool. Then you are supposed to ride again 10-15 minutes at normal speeds and even wide open for short bursts, but not to ride at the same rpm constantly. After that it says pull the top end and look for high spots on the piston skirt and smooth out if need be. You are supposed to put it back together and ride one more light ride. After that go bananas. I've still got the bike apart waiting on parts to fix the leaking crank seals. That is one thing that sucks about having a 1991. It seems like it takes forever to get the factory parts. I have been waiting 2 weeks already for seals and gaskets. [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
Normal break in or damage
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