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C6 Corvette ZR1 & Z06General info about GM’s Corvette Supercar, LS9 Corvette Technical Info, Performance Upgrades, Suspension Setup for Street or Track
From what little I can see, that one looks like bearing failure.
Originally Posted by Justincase427
looks like a rod made that hole it's right at the pan. Doesn't take a genius though I am one...
Bingo, winners. Lost 4/5 journal bearing at Auto Speedway Fontana coming out of the big left hand sweeper. Oil starvation. Heads were fine. Pics
My point is not every failure of a bone stock engine is caused by a dropped valve. Seems every time one of these failures occur, someone starts pontificating about valve failures w/o any proof, and I believe that has raised the level of anxiety for many owners who are new to the C6Z or not mechanically inclined. There is another thread (https://www.corvetteforum.com/forums...post1594348419) where the OP had a failure, and many claimed it was a valve without any evidence of such. Op has since gone silent so we haven't learned anything about that failure. Latest failure here, Op state he sees "something" in the cylinder that caused failure and assumes a dropped valve. Probably so, but could be a failed plug (it's happened) or who knows what. Without pulling the heads or finding a piece of the valve, no one can say conclusively that a failure is a dropped valve or anything else. We need to stop jumping into the "Valve failure" rut whenever this happens and start looking for evidence (when possible) before coming to a determination. I'm not saying there is no need to check your heads (I've had two sets replaced myself), we just need to know for sure before announcing a determination like it's the gospel. Otherwise, it's potentially crying "wolf", and hurting the rep of the LS7. Just leave it as unknown. Sorry for the rant.
Bingo, winners. Lost 4/5 journal bearing at Auto Speedway Fontana coming out of the big left hand sweeper. Oil starvation. Heads were fine. Pics
My point is not every failure of a bone stock engine is caused by a dropped valve. Seems every time one of these failures occur, someone starts pontificating about valve failures w/o any proof, and I believe that has raised the level of anxiety for many owners who are new to the C6Z or not mechanically inclined. There is another thread (https://www.corvetteforum.com/forums...post1594348419) where the OP had a failure, and many claimed it was a valve without any evidence of such. Op has since gone silent so we haven't learned anything about that failure. Latest failure here, Op state he sees "something" in the cylinder that caused failure and assumes a dropped valve. Probably so, but could be a failed plug (it's happened) or who knows what. Without pulling the heads or finding a piece of the valve, no one can say conclusively that a failure is a dropped valve or anything else. We need to stop jumping into the "Valve failure" rut whenever this happens and start looking for evidence (when possible) before coming to a determination. I'm not saying there is no need to check your heads (I've had two sets replaced myself), we just need to know for sure before announcing a determination like it's the gospel. Otherwise, it's potentially crying "wolf", and hurting the rep of the LS7. Just leave it as unknown. Sorry for the rant.
Hey man great point but when you pull plugs and all but two have oil on them hummmm g
just saying it's not rocket science here the engine has been out for hundreds of years if you know what you are doing just looking at plugs tells u a bunch so pistons just blow up and cause a hole out the motor hummmm well that's new. A bearing falure is lack of oil or over reving but it happens sometimes so I understand that I seen heads with thousands of hours on them no guide problems just saying thanks.
05-10-2017, 03:42 AM
