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Should I bore out?

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Can I get away with a hone out and replacing the rings? I have a other  valve cover with freshly lapped and replaced exhaust valves

96 xr600r

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I've scotchbrite rubbed with wd40 and just changed rings...
I can't really tell on your cylinder...
I opened motor for something else...not a piston problem...
Confidence AND a good product is what you get when you have a professional LOOK at it first...that's what I did. Measured out of round too. He said its fine.
Better if you know the machinist cause he'll be honest...a machinists job is not to turn you away for something whether you need it or not...monies knocking at the door, they answer.
Sure, cheaper just new rings...but say you have to go in again...another top end disassembly and another new set of rings...

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how bad is the ridge at the top of the stroke? can you feel it? Also, if you replace rings always hone.

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The big things are piston to bore clearance, out of round, and taper.  Sounds like you had that measuring done.  If good then just hone so the rings seat.  Did he measure piston to bore clearance.  It varies if cast or forged, with forged needing more clearance.

Edited by cleonard
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