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Kawasaki MX & Off-Road Dirt Bikes
KX250 -06 increasing compression
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[QUOTE="Anssi, post: 1081211, member: 23342"] I did some testing. Set the ignition timing to as much advance as the marks allow. Mid-range was improved noticeably. Backed out to halfway between right in the middle of the marks (where it was stock) and full advance. Got worse. Then to one quarter from full advanced -> got better again, but I think fully advanced still was best (allowed me to get out of turns faster and clear jumps easier). I also started to measure my squish clearance, but the solder I had was only 2mm (0.08") and that barely got touched by the piston. It was hard to really see where the flattened spot was, but my micrometer showed about 0.067" (damn you and your archaic units of measure). I will check this again with thicker solder. BTW, my manual says stock compression is 10.2 - 8.9. There is no mention of allowed squish clearance. If I confirm that 0.067", could I maybe have 0.4 mm taken off the head to get the squish to 0.05" and increase compression a bit? [/QUOTE]
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Dirt Bike Discussions By Brand
Kawasaki MX & Off-Road Dirt Bikes
KX250 -06 increasing compression
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