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Cam bearing failure

Roert42

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I’m rebuilding a Ford 3.8 V6.
I tore the engine down yesterday and everything seem in very good shape, except the cam bearings.

The journals on the came were in great shape, so I was very surprised to see this. Looks like the tops of off the cam bearings are pitted heavily.

D213B738-1BEA-4D00-B972-E8EF4D1EFAF6.jpeg
93B54836-1093-45B6-AAE6-47BE1EFC58F7.jpeg
 


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Roert42

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Does anyone know if this is common for this engine family?

Looks like oil starvation, but there doesn’t seem to be any signs of overheating or excess wear.
 

dvdswan

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Keep your mind like an umbrella, it only works if its open... Continually learning.
Are the oil galleys lined up with the bearing hole?
 

Roert42

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Yes, check all the bearings orientations.

150k factory bearings by the way.
 

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