After cleaning up a 79 318 block I found troubles at the rear main seal. See pics. A broken peace, marked in yellow. This is the upper side of the main seal.
Scrap the thing or use it? What should I consider? Lots of sealant? The block is very usable, apart from this issue.. My thought is to just use it with a new seal an carefull use of sealant..
Personally, I think I would have it welded by somebody who can properly weld cast iron. Then I would grind it as flat as possible to give the crank flange plenty of clearance. I don't think I would trust just putting sealant around the broken piece.
