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Dirt Bike Discussions By Brand
Kawasaki MX & Off-Road Dirt Bikes
Motor rebuild
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[QUOTE="oldguy, post: 1233025, member: 16965"] I am not sure how the piston/ring design differs with the YZFs but my sons YZ450F had a complete topend done about 15 hours run time ago. This weekend I noticed a strong air push coming out of a vent at the head and a small amount of oil dripping. Concerned I called Rich and he informed me that is a normal indicator of the rings beginning to need replacement and posibly also the piston. Granted this was 15 (20 at most) very hard high rev hours but it puts into perspective these machines even when serviced by pros (Rich and Eric Gorr in this case) need constant maintenance. [/QUOTE]
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Dirt Bike Discussions By Brand
Kawasaki MX & Off-Road Dirt Bikes
Motor rebuild
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