Lower intake eroded. Cause? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 09-04-2012, 08:40 PM   #1
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Default Lower intake eroded. Cause?

The lower intake manifold on a friend'* car has eroded and the head shows some effects too. This is between #2 and #4 where the water pocked dead ends. What caused this?
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Lower intake eroded. Cause?-intake2.jpg   Lower intake eroded. Cause?-intake1.jpg  
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Old 09-05-2012, 07:22 AM   #2
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I have seen that before with my engines. But not as BAD as your pics. I can only assume it has something to do with the coolant. I do know if its mixed with engine oil, it turns very acidic and eats metal.
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