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Canadian Daves JustKDX
KIPS valve keep stripping
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[QUOTE="BucKat, post: 357145, member: 29199"] Update.. I have check the top end again and found some interesting finds. Vavles,collars,bores and guides( hole in bottom of bore to accept valve )are all ok. But what I did find was interesting. :( 1st.... the crack is all the way through the cylinder. Well,,,,from inside the cylinder wall through to the side where the center exhaust valve sits. That area is about 1/4 thick or so.. 2nd.... the head gasket.... the long holes/slots in the gasket,the ones that allow the coolant to flow through, are not the same size as the holes/slots in the cylinder and/or head. The holes in the cylinder/head are about 1"x1/4" . The two back slots match fine..They are about 1"x1/4". The two FORWARD holes in the gasket are only about 1/4" in dia..They are holes.Not long slots. This will not allow sufficient flow/cooling in the front of the cylinder and could cause overheating. Thus causing the valves to become siezed as jdbrusch stated. My questions: 1st.... can this be fixed using epoxy/jbweld or something similar. Erric G. uses epoxy to change the timing of transfer ports so can it be used in this case or does this need to be fix professionally, via welding and replating. I'm thinking more so to seal the area as compared to increasing strenght..Any thoughts?? 2nd.... will this cause jetting nightmares as the exhaust port is essentially alway open to the combustion chamber. Even though... it is only a small amount. Thanks Joe [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
KIPS valve keep stripping
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