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RedCoupe RedCoupe is offline
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Join Date: Oct 2013
Location: Prescott, AZ
Posts: 954
Originally Posted by toddu View Post
What causes pitting on a cam like that?

This is typical camshaft wear when the hardened surface is breaking down. Once the hardened layer is completely gone, it gets nice and smooth and shiny again but unfortunately it wears very fast and you wind up with a flat cam lobe! I agree with GTC that lubrication is critical for long cam life, but this type of spalling or pitting is often seen on a well worn cam.
1990 964 Coupe
1986 Carrera 3.2 Targa
Old 07-30-2016, 10:31 AM
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