The one side of the thrust bearing look great to me - your two side views are of the same side. The scratches present in the bearing were probably all there at the end of your initial break-in run. Grit left in oil passages and hard to reach corners all comes loose with the hot oil and circulates until either permanently embedded in the Babbitt material or trapped by the oil filter. I'll leave it up to the experts, but I'd probably bolt them back up and run them.
Any specific problems why you tore the engine down?
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Mick Batson
1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 Catalina Safari Wagon.
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