Thanks for the input Ridge, I was thinking along those same lines for break in. I did not how ever consider the roughness in the head as a starting point for predetonation. I was going to wire brush it clean and a little smoother, I may have to work a little harder in there now.
To late to consider a rebuilt power head since I just ordered $2122.00 worth of parts and tools. I do have a parts 90 inline I am going to get the replacement piston out of, I'll check the head on that one. It should be in better shape, if so I'll use that block.
Thanks, Turbo
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