pbekkerh wrote:
The damage in picture 3 is not important, if the case isn't cracked there.
I would worry more about the wear/corrosion ( I can't see what it is) where the bearings are mounted. And check if the cases are true, especially the mating surfaces.

So check for cracks, check if true, check if bearings can be held without rotating, check if bearings can fit airtight, check if the mating surfaces can fit airtight.

I had already run through the cases to check for cracks, and found none (I was worried about that due to the connecting rod making that mark in pic 3, which means it made contact with the cases). The bearing journals are actually in good shape, the "corrosion" you mention is really sealant that was put in there when the engine was last built. With a little mineral spirits and some 00 scotch brite it comes right off.

I need to check the matting surfaces (as well as the base cylinder matting surfaces) with a straight edge. Overall, I think they will work fine. I plan to clean up that one area so it's a little smoother, but beyond that they should be fine.

thanks
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Charles Gallant