Crank Blueing...

this morning I was taking the piston out of my 04yz450 and as I got he wrist pin out I looked down and saw the crank near the crank pin TDC very blue. I dont know if this is an issue?


That is a result of the manufacturing process, and totally normal.

yea, as he said. I think the pin journals are flame hardened to stop them galling

Sweet! Thanks guys! Im off to put it all back together... with some new rings!!


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