So I tore down my spare 153. I was hoping for a "red neck" rebuild, (rings, bearings, valve job), but it doesn't look like this is a good candidate. it already has an .040 overbore and pistons. The tops of three out of four pistons are beat up like it ate something. The cylinders have some taper and are 4 thou over at the largest (3.919), so it would need bored .060 to clean it up. There was a hole in the high end of oil pan and my guess is it died from chronic low oil. Main bearings show some copper pretty evenly and there's some strange wear on the cam. Nylon timing gear looked good, but it broke when I tried to pull it. Must be a trick to that? Also a couple small bits fell out of the block, (not the oil pan) when I had it upside down to push the pistons out. Pics attached. Anybody recognize those little ears? I think my next move is to pull the motor that's in the jeep hoping for something in better shape.
