Does my cylinder need to be replated?

Brian_Bowles
Edited Date/Time 12/28/2019 6:22am
Compression was around 150 lbs on the 1995 CR250 so I took it apart.
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Brian_Bowles 12/28/2019 3:17am
12/28/2019 3:17am
I cannot feel anything but the discoloring around the exhaust port makes me wonder if that is plating work through.

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kb228
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kb228 12/28/2019 3:52am
12/28/2019 3:52am
If it were mine id replate it.
CarlinoJoeVideo
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CarlinoJoeVideo 12/28/2019 5:54am
12/28/2019 5:54am
Doesn’t look like anything major. Depends what kind of rebuild you are going for. Top performance like new or just want the bike to run
sandman768
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sandman768 12/28/2019 6:22am
12/28/2019 6:22am
Looks like the plating is worn off around the exhaust port. As CarlinoJoe stated, what is your end game? If you want to do it right, strip the cylinder & send it out to a reputable plating company & have them match a new piston while they do it. While you wait for the 400.00 bill, clean all your powervalve parts. What about the bottom end? Disassemble & inspect, no sense doing all that top end work if the bottom end is ready to let go.
Brian_Bowles 12/28/2019 6:54am
12/28/2019 6:54am
Thanks guys. I have not take the bottom end apart. There is no upward or downward play in the crank. Before this the bike shifted fine too. I figured it should be replated. I just did not really know.

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