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Old 09-27-2012, 03:41 PM
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kaosbandit kaosbandit is offline
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Default Cleaning a Nikasil Cylinder

Ok. I need some of you guys that know metallurgy or work in a machine shop to toss your opinions in.

I have a Nikasil lined aluminum cylinder. The con rod bearing went out and the piston has smeared a little aluminum on the wall of the cylinder. I cannot feel any grooves or scratches and the cross hatch still looks great. I can only see the aluminum smear when the light hits it just right.

I know you cannot remove any Nikasil material without a diamond hone. I don't want to remove any Nikasil.

So far I am coming up with using muratic acid and applying small amounts to the affected area and then thoroughly washing.

I am also seeing the idea of either a 600-800 wet sand or scotch brite pads to take the aluminum deposit off.

The acid seems to be the preferred method, but I have seen a couple of mentions that the acid is actually etching the Nikasil. I know muratic acid will eat chrome. Nikasil is similar to chrome chemically, but not exactly chrome.

Has anyone had any experience with this?
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