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Canadian Daves JustKDX
KIPS valve keep stripping
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[QUOTE="Canadian Dave, post: 358041, member: 16102"] Depending on the size of the crack the idea of an overheated center valve binding in its bore is a good one. You should also check into: There is a shaft at the bottom of the KIPS valves that fits into a bore in the cylinder. Over time the bore in the cylinder can wear allowing the valve to bind at it rotates, breaking the shaft. There are a couple fixes for this. One is to enlarge the hole, install a brass bushing and resize the hole. The other is to take a center punch and make four indentations in a square pattern around the hole. This will deform the aluminum in the area and reduce the size of the hole. Test fit the valve to insure it still rotates freely in the hole. If it's a bit snug you can use a drill with an appropriate sized bit to enlarge it to the proper size. You might check with Eric Gorr on a reconditioned cylinder. I recently sent him a 89 to 94 cylinder for rebuilding and resale. He may still have it or it may be in process. For the price you’d pay for a new cylinder you could likely recondition yours and have your cylinder and head modified while you're at it. You might give Fredette Racing Products a call as well. He carries used KDX parts and you might luck out. Hope that helps, David [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
KIPS valve keep stripping
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