A few months back a friend and I found a great deal on three 13b engines. We broke them down, scrapped the parts that were obvious garbage and cleaned up the parts that were in good shape. I ended up w/ almost an entire S5 engine worth of parts. There were only 2 rotors that appeared usable...
As all the hard seals were intact and there didn't seem to be any fluid leaks we suspected a spun bearing might have been the cause of failure. My friend them proceeded to press out bearing in the front rotor....with his thumbs :scratch:
It looks fine but something tells me that one is destined to become a clock

The other rotor (don't recall if it came from he same engine) Looks fine, there is a little copper showing in one small spot however (see last pic). Would this bearing need to be replaced?