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Dirt Bike Brands - Other
cr 125 trouble!!
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[QUOTE="whenfoxforks-ruled, post: 1394635, member: 73147"] Rubber gloves, green scotch brite pad, oven cleaner and some water. Do not get the stuff with lemon juice. Spray it on the bore, the aluminum should break free. Then clean up matching the cross hatch direction. The aluminum piston rubs off, into the plating cross hatch. it looks smooth, or scoured? The plating is pretty durable. I have heard argue the ball hone and what not, those remove a lot of material. The green scotch brite is not too bad, the purple can remove material like emery cloth. Check the bore near the top and bottom of where the piston actually rides. Measure side ways, then check front to back. .002" variance is all that is allowed! Replating is the best alternative, and going big bore costs no more, usually. Send the top end to Forward Motion. If the bore is good, Eric knows. Vintage Bob [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
cr 125 trouble!!
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