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Yamaha MX & Off-Road Dirt Bikes
Tuning Help: 1997 yz250 w/pro-circuit platinum pipe
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[QUOTE="yamasaki, post: 942736, member: 54723"] Ok, so after another dud day at the track, i figured it was time to take a good look at the top-end.. sure enough, i think we have a problem here! take a look at my piston and cylinder pics below. I guess its time for an overbore? Any advice/input? It looks like a small chunk of my exhaust port on the PV is missing too? Rings on the piston have no obvious signs of damage tho.. <a href="http://www.edwinrivera.com/yz250/rebuild/piston1.jpg">Piston 1 Link</a> <a href="http://www.edwinrivera.com/yz250/rebuild/piston2.jpg">Piston 2 Link</a> <a href="http://www.edwinrivera.com/yz250/rebuild/cylinder1.jpg">Cylinder 1 Link</a> <a href="http://www.edwinrivera.com/yz250/rebuild/cylinder2.jpg">Cylinder 2 Link</a> [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Tuning Help: 1997 yz250 w/pro-circuit platinum pipe
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