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Cracked (compression ring or piston ring land), what can cause this?

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Old Aug 26, 2004 | 08:02 PM
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Default Cracked (compression ring or piston ring land), what can cause this?
As title states I am curious what the causes would be for compression ring or piston ring land failure? On a H/C car (for >800 miles), running 11.25:1 CR, >10kmiles total on LS6 engine and never spun over 6800rpm?



Thanks!
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Old Aug 26, 2004 | 09:40 PM
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detonation/heat/piston heating valve,etc.most likely detonation.
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Old Aug 26, 2004 | 10:45 PM
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"piston heating valve"... do you mean piston hitting valve?

thx
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Old Aug 27, 2004 | 12:04 AM
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detonation is most likely cause
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Old Aug 27, 2004 | 09:32 AM
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detonation normally. Did you ever spray the car?
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Old Aug 27, 2004 | 09:54 AM
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Originally Posted by vettemaster1
detonation is most likely cause
Too much advance at high RPM.
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Old Aug 27, 2004 | 11:07 AM
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Originally Posted by vettemaster1
detonation is most likely cause
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Old Aug 27, 2004 | 11:19 AM
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J-rod, Nope no spray...

Thanks for the info guys.
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Old Aug 27, 2004 | 12:16 PM
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piston hitting valve.
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Old Aug 27, 2004 | 05:38 PM
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Originally Posted by schpodie
As title states I am curious what the causes would be for compression ring or piston ring land failure? On a H/C car (for >800 miles), running 11.25:1 CR, >10kmiles total on LS6 engine and never spun over 6800rpm?



Thanks!
Been there before on my other ride, except it was 3 pistons. It's from too much heat, boost, advance, and/or running lean. You may have a bad tune or injector.
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