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Dirt Bike Discussions By Brand
Kawasaki MX & Off-Road Dirt Bikes
Top end build FAIL help
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[QUOTE="holeshot, post: 1411112, member: 17202"] Your best bet is to take it to a reputable machinist that knows what he is doing. This can be tough if you live in a small town (I lived in a small town of about 25,000 before, so I understand that situation). Any knowlegable shop will chamfer the ports properly on a 2 stroke cylinder. If the ring was catching on the ports, then you certainly need a new ring. I've chamfered the ports on a '72 125 Husky (after porting the heck out of it) very similar to what you have in the pic (45 degrees), but I thought maybe the ideal angle should have been much steeper. My '03 KX 125 seems to have much steeper chamfering than 45 degrees. I'll let the real experts comment on this, though. It's been noted here on DRN that the exhaust bridge on the KX 125 can cause problems if not relieved properly (referring to a big bore here) The '93 didn't have a plated bore? [I]Nevermind, I just noticed that you are sleeving - generally not recommended because of inaccuracies in the sleeving and different heat transfer characteristics.[/I] [/QUOTE]
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Dirt Bike Discussions By Brand
Kawasaki MX & Off-Road Dirt Bikes
Top end build FAIL help
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