MC Engine Cases - Frustration Building
I have reviewed the online manual, read several books, and viewed at least one instructional video. I have done a fair amount of metal polishing over the years and have generally had pretty good luck polishing stainless. On the other hand, my success rate with MC parts has been rather poor. Currently, I am working on three engine cases from a 70's era cycle that I'm restoring. I removed the residual polymer coating from the cases with garden-variety paint stripper and wet sanded the cases with 1500 Meguiar's followed by 2000. I then went to spiral sewn and tripoli on my bench grinder. I got a decent shine but numerous small scratches and the dreaded HAZE remained. I then switched to a loose wheel with white rouge and didn't really see much improvement (direction of small scratches would change direction depending on the orientation of the buffing wheel - haze remained). I took the case to the garage and tried a 4" spiral with tripoli on a dye grinder followed by a loose wheel with white rouge - NO improvement.
So, am I missing some very basic skill with this polishing project? I'm not sure what these cases are actually made of - some type of alloy I assume.
Any advice would be greatly appreciated and certainly help to ease the frustration level.
rickt
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