Can anyone tell me the fail mode seen in this bearing? This is a friends 0-200A Continental, relatively low hours on field overhaul. The pic is the #2 bearing, #3 looks similar but better, #1 looks relatively normal with a little debris damage, nothing serious. The engine was disassembled looking for a low oil pressure issue. Pretty sure this is it, but this damage does not look like lack of oil pressure or debris damage. I?m only guessing but it looks like corrosion or some kind of plating failure. The tin babbit is all gone on this one, and much of the copper. The crank looks decent, probably will clean up with polish only. Information from the previous overhaul is sketchy, not even sure the bearings were replaced.
http://i1380.photobucket.com/albums...-85F8-489B-BEFC-8257A37ACA58_zpsgwyt9spe.jpeg
http://i1380.photobucket.com/albums...-85F8-489B-BEFC-8257A37ACA58_zpsgwyt9spe.jpeg