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I just got the head back from the shop. Measure 0.007 of warp, no cracks, 6 bad valve guides (all exhaust), and the #6 exhaust valve was bent near the keepers.

The bad, no smoking guns as to why the gasket failed. Any ideas? Maybe I didn't get the head torqued correctly? It lasted about 10,000 miles before it failed. It did not mix with oil or get into the cylinders.


Unfortunately, I did not grab a picture of the gasket I pulled off, however, I have a doodle of the new gasket as to where it failed. 


The red is where the gasket failed, the blue is the path of the coolant. It failed near #2 and #5 and was starting to fail on #3&4. 


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