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Kawasaki MX & Off-Road Dirt Bikes
2T Engine experts -> your opinions on top end rebuilds
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[QUOTE="tx246, post: 1223283, member: 23127"] Now Im not one of the qualified experts but I do have some suggestions. When to build a top end depends on a lot of things. Ive seen trail riders that go 2k between top ends. These guys are not slow either but they dont twist em rpm wise. If you ride with the bike under a heavier loads, your replacement interval will be sooner. Heavier load meaning riding in sand or mud. A slower mx rider isnt going to need a top end as soon as the local pro in the same number of laps ridden. Do you see a pattern here? Top end jobs are really preventive in nature. You get to check side play on the crank, check for rod problems, check burn patterns on the piston dome (jetting)and take apart the power valve and clean it ect. On my bikes, the piston/rings are rarely out of spec. but I replace once a year as insurance which is 1000 miles mixed trail/track. Its a big bike and I dont hammer it. I used to just rering and go, but I got bit once when a piston fatigue fractured and cost me a weekend of riding and a new cylinder. Again that is just why I top end when I do. [/QUOTE]
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Kawasaki MX & Off-Road Dirt Bikes
2T Engine experts -> your opinions on top end rebuilds
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