Hey lets play "Where did this ball bearing come from?"

[Johnhef]

So I finally got around to taking this 1990 560SEC engine I bought for parts off eBay a few years back. When I pulled the passenger side head off, I found out why the engine was scrapped!



See the round indentation in the bottom of the head?



and the indentation where I found the ball bearing sitting when the head came off.



and theres the damage to the block. Piston was broken underneath and cracked on top, when it tried to compress the bearing, the bottom part of the piston pushed out on the wall of the cylinder and broke it.

I'm still wondering where it came from and how it got in there in the first place!