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Cobra Forums
The Terminator
Engine/Tuning
Detonation damage or another cause?
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<blockquote data-quote="SlowSVT" data-source="post: 14680946" data-attributes="member: 20202"><p>Perhaps I'm missing something but it appears that the only damage that has occurred is the head gasket has failed. That chamber looks better than most, nothing melted, no pitting, no white scorched surfaces, the valves are as black as night. You had a runaway turbo momentarily overboosting the engine and the gasket gave up the ghost. I would run a surface gauge over the deck and head you may have a low spot there it torched both surfaces when the seal was breached. You may want to take a skim pass on both heads and cylinder banks if the surface finish has been altered. If everything else looks good I would button the engine back-up and get it back into service. I take it you didn't hydrolock the engine with the cylinder hear full of coolant using the starter?</p></blockquote><p></p>
[QUOTE="SlowSVT, post: 14680946, member: 20202"] Perhaps I'm missing something but it appears that the only damage that has occurred is the head gasket has failed. That chamber looks better than most, nothing melted, no pitting, no white scorched surfaces, the valves are as black as night. You had a runaway turbo momentarily overboosting the engine and the gasket gave up the ghost. I would run a surface gauge over the deck and head you may have a low spot there it torched both surfaces when the seal was breached. You may want to take a skim pass on both heads and cylinder banks if the surface finish has been altered. If everything else looks good I would button the engine back-up and get it back into service. I take it you didn't hydrolock the engine with the cylinder hear full of coolant using the starter? [/QUOTE]
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Detonation damage or another cause?
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