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83 250r piston
hello! just picked up a 1983 250r that is apparently just needs a piston. My question is the guy says the jug has been honed, would this change the size of the piston needed? or will the stock one still work. thanks
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Just being honed doesn’t mean much. The cylinder needs to be accurately measured so you will know what sized piston will fit correctly. If run too long a cast OEM piston can rattle enough to break & take out the crankshaft. Do it correctly & save an accident.

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What's that tool called??
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Dial bore gauge. Used in conjunction with a micrometer, you need to measure the cylinder top middle and bottom on 2 axis'.
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