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Thoughts on what would cause a headgasket to fail like this?
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<blockquote data-quote="BrounHownd" data-source="post: 484110" data-attributes="member: 30222"><p>Pappy, thanks for the reply. </p><p></p><p>I mean, the obvious answer is that the gasket material outside the fire ring is missing and eaten away by combustion gas (and the paper towel is showing, where it shouldn't be). I guess what I was asking was what was the order of events to this failure--gases eating away the gasket by blowing around the ring, then pressure breaking the fire ring, or the fire ring eroding a little bit, the gasket degrading, then the ring falling catastrophically?</p><p></p><p>The other obvious sign that you could be referring to is that there's oil on the gasket where the coolant galleries are, but that's explained by combustion gases (and unburnt oil) getting into the coolant (and out through the tell tale). </p><p></p><p>I guess I could have been more clear in my question--is there anything other than a warped head that could have caused this? Based on what I've found, the previous owner liked to half *** his repairs, and I don't think this is an OEM gasket, as everything came apart a bit too easily for a 40 year old motor, and the head bolts had paint chipped off them on the corners.</p></blockquote><p></p>
[QUOTE="BrounHownd, post: 484110, member: 30222"] Pappy, thanks for the reply. I mean, the obvious answer is that the gasket material outside the fire ring is missing and eaten away by combustion gas (and the paper towel is showing, where it shouldn't be). I guess what I was asking was what was the order of events to this failure--gases eating away the gasket by blowing around the ring, then pressure breaking the fire ring, or the fire ring eroding a little bit, the gasket degrading, then the ring falling catastrophically? The other obvious sign that you could be referring to is that there's oil on the gasket where the coolant galleries are, but that's explained by combustion gases (and unburnt oil) getting into the coolant (and out through the tell tale). I guess I could have been more clear in my question--is there anything other than a warped head that could have caused this? Based on what I've found, the previous owner liked to half *** his repairs, and I don't think this is an OEM gasket, as everything came apart a bit too easily for a 40 year old motor, and the head bolts had paint chipped off them on the corners. [/QUOTE]
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Thoughts on what would cause a headgasket to fail like this?
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