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acid on cylinder question

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im thinking about getting an 01 yz125 and the guy who owns it blew it up and when it blew a piece of the rings stuck to the cylinder. rather than having it resleeved, he put it in muriatic acid and let the whole cylinder sit in there for a while then popped the piece of metal off. my question is does this acid affect the nycacil coating on the cylinder or anything else. i dont want to get this bike then find out that there are cylinder problems.

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A dab or two from say a Q-tip on the affected area is what works best. The Nikasil should be fine, it's the rest of the cylinder I would be worried about. Muriatic acid likes to eat aluminum. That's why it is suggested for removing piston smears from the cylinder walls. I have heard if you leave a cylinder in it over night it might not all be there in the morning.

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so its problaby alright if he just got the inside of the cylinder. ill ask more questions when i see him again.

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I'd very very concerned if all the powervalve stuff was left in the cylinder...Hopefully, they did NOT really dump the whole thing in acid !

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