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Kawasaki MX & Off-Road Dirt Bikes
low compression after rebuild
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[QUOTE="Jasle, post: 656759, member: 26675"] not much oil...about half a teaspoon of premix oil ought to do it. This will seal the rings and your compression will be higher if they are leaking by. The reason you need to gap the rings is that the rings are made for about 4 sizes of cylinders. The cylinders are usually marked with a size like A,B,C,D This denotes machining tolerances and where the cylinders fell. That way they can match up a piston. Wiseco errs on the small side so you don't need to order the specific size piston. When ordering OEM you usually will tell the vendor which cylinder you have so they get you the correct size piston. If memory serves correctly for he wiseco you need .006 gap for every 1 inch of bore. So a kx65 is 45mm. I think that equates to .014gap. Doublecheck my math because its off the top of my head. You drop the rings in the cylinder and square them up with the piston. then measure the gap with a feeler gauge. If they are too tight then you need to file them down. The reason is that when heated they expand. If too tight the ends will hit and bind causing scoring or possibly siezure. Eric Gorr has some info on his website. [url]www.ericgorr.com[/url] His explanation is first rate. The nick will be plain to see. They usually chip around the exhaust port. Not bad for a first attempt. If all else fails just pop the head and give a peak. It cannot hurt to check it out. [/QUOTE]
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Dirt Bike Discussions By Brand
Kawasaki MX & Off-Road Dirt Bikes
low compression after rebuild
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