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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Miss-Matching Case Halves
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[QUOTE="mkandl53, post: 286552, member: 28843"] My son's brand new 02 kx65 failed a lower end bearing before we got 3/4 gal through it and I noticed that some folks have reported repeated low-hour (less than 10 hrs) failures with the same engine over and over and others have had no lower end failures at all. FYI: break-in, warm up, 32-1 oil mix, ... all done properly. My question is that I noticed on the bottom of the cases, numbers were written at the factory in colorful ink on each case half. It looks like one of the digits got slurred from an 8 into a 6 on one case half and may have been miss-matched with a 6 digit on the other case. Can miss-matching case halves cause repeated lower end bearing failures? It seems to me that if one main bearing location was slightly higher vertically it could put a slight bind on the lower end beariing. Anyone have experience with this? (PS: there is a reasonable bump at the machined suface that the cylinder sits on) [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Miss-Matching Case Halves
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