3B Crank Journals Turned Blue?

Sep 1, 2021
Summerland BC
Hey Mudders,

I took my 3B oil pan off to repalce the gasket. After removing the oil pan, I did a brief visual inspection of the bottom end and noticed a slight blue on the crank beside the the rod cap on a couple that I could see. Is this extreme heat normal for these motors at these locations? It has 320,000 km on it. The cam looks like it has normal wear. Before I pulled this motor I ran it for a few minutes and it sounded normal for a 3B motor.

See pictures below.

3B Main Journal img#1.PNG

3B Main Journal img#2.PNG

3B Main Journal img#3.PNG

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