I ended up just rubbing the crank a little with some fine steel wool and it cleaned up rather nicely. The jornals are a little discolored but the surfaces are pretty smooth. The ring came off easy and all the edges look/feel sharp. A tooth brush cleaned the ring grove out good after a soaking in the antifreeze. I'll stick the engine in the freezer for a while then hit the case with some heat and the bearings should come out then.