Another Z engine bit the dust yesterday
Was at the Glen yesterday when one of the other participants lost his engine between turn 1 and 2. Dropped enough oil that they couldnt clean it up by 4:30 so they closed the track an hour early. This brings the total that I personally know about to 9.
Bill |
That's very sad. What year was it?
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modifications?
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So glad mine is in the shop getting PRC heads
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Originally Posted by Bill Dearborn
(Post 1583749199)
Was at the Glen yesterday when one of the other participants lost his engine between turn 1 and 2. Dropped enough oil that they couldnt clean it up by 4:30 so they closed the track an hour early. This brings the total that I personally know about to 9.
Bill |
Wonder what year it was and how much tracktime it had?
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Originally Posted by Bill Dearborn
(Post 1583749199)
Was at the Glen yesterday when one of the other participants lost his engine between turn 1 and 2. Dropped enough oil that they couldnt clean it up by 4:30 so they closed the track an hour early. This brings the total that I personally know about to 9.
Bill Thanks for the information Bill it has been so helpful and enlightening. Cheers, Paul. |
Originally Posted by Bill Dearborn
(Post 1583749199)
Was at the Glen yesterday when one of the other participants lost his engine between turn 1 and 2. Dropped enough oil that they couldnt clean it up by 4:30 so they closed the track an hour early. This brings the total that I personally know about to 9.
Bill |
Originally Posted by forg0tmypen
(Post 1583749786)
Wonder what year it was and how much tracktime it had?
Originally Posted by MTIRC6Z
(Post 1583749831)
Of course we all know that when any engine blows it is a weak stock exhaust valve at fault, there's no way oil starvation, cast pistons, constant race use and/or over-revs, etc, etc, ever had anything to do with it, GM is always at fault. That's why threads that start like this one with ABSOLUTELY no information other than "another engine blew" are so important to making the internet and this forum so useful
Might as well be surprised that the carbon ceramic Z07 rotors fail after a few years of road courses, or that crankcase/trans/differential oils need to be replaced more frequently - there has to be a reasonable limit to what we blame valves for, IMHO. What I really don't like, are the low mile garage queens that pop, totally screwing the non-racer with a hefty repair bill. For heavily raced cars, cylinder head maintenance should be on the list along with tires, oil(s), rotors and suspension: **** wears out more quickly than OEM when you flog it like someone else's mean dog on a track for a few years. :D |
Originally Posted by Mr. Gizmo
(Post 1583750137)
[...] In a C6z between 1 and 2 at the glen what mph gear and rpm would a driver most likely be at? Could there have been a missed down shift?
http://i1114.photobucket.com/albums/...psdcafe7ee.png http://en.wikipedia.org/wiki/Watkins_Glen_International |
Originally Posted by Bill Dearborn
(Post 1583749199)
Was at the Glen yesterday when one of the other participants lost his engine between turn 1 and 2.
IF it's a regular wondering why the owner never heard there's a potential issue w/ heads? Ever speak with the guy? Why on earth an informed owner wouldn't have their head redone for heavier track usage is a real mystery to me. :confused2: |
I see the "it won't happen to me, because this was a case of abuse" crowd is in full force this morning.
Denial (I'm not checking my valves) Anger (I've checked my valves and I'm posting a video. Eff GM) Bargaining (if I don't abuse my car, will you spare it mr corvette god) Depression (ill just get rid of it and move on) Acceptance. (My heads are fixed and the beast is back) Maybe I'll start a poll to see which stage forum members are in. |
Originally Posted by jedblanks
(Post 1583750537)
I see the "it won't happen to me, because this was a case of abuse" crowd is in full force this morning.
Denial (I'm not checking my valves) Anger (I've checked my valves and I'm posting a video. Eff GM) Bargaining (if I don't abuse my car, will you spare it mr corvette god) Depression (ill just get rid of it and move on) Acceptance. (My heads are fixed and the beast is back) Maybe I'll start a poll to see which stage forum members are in. |
There ya go -- confirmed exhaust valve failure. Can you guys post the pics from the overnight teardown? http://i1114.photobucket.com/albums/...ies/rofl_3.gif
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Originally Posted by jedblanks
(Post 1583750537)
I see the "it won't happen to me, because this was a case of abuse" crowd is in full force this morning. [...]
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Originally Posted by jedblanks
(Post 1583750537)
I see the "it won't happen to me, because this was a case of abuse" crowd is in full force this morning.
Denial (I'm not checking my valves) Anger (I've checked my valves and I'm posting a video. Eff GM) Bargaining (if I don't abuse my car, will you spare it mr corvette god) Depression (ill just get rid of it and move on) Acceptance. (My heads are fixed and the beast is back) Maybe I'll start a poll to see which stage forum members are in. |
Originally Posted by Mark200X
(Post 1583750653)
Since nobody said that, my question is: Why are you making stuff up?
if you saw my original post....my 07 has 77K on it and hasn't had an issue....will it??? Maybe...IDK....do I track it? No....do I occasionally drive it like I stole it? yep... are there some legitimate issues..... perhaps .....is it full blown epidemic? inconclusive. do people post stuff to stir the pot? absolutely do people do stuff and lie about it on the internet? yepper would they ever do that to the dealer to try and it get it fixed under warranty? you betcha was the guy the OP posted about under warranty? we don't know...if so what will he do? these and many other questions will be answered in this episode of .... "A Z06 dropped a valve!!!!" > insert dramatic music here< |
Originally Posted by jedblanks
(Post 1583750537)
I see the "it won't happen to me, because this was a case of abuse" crowd is in full force this morning.
Denial (I'm not checking my valves) Anger (I've checked my valves and I'm posting a video. Eff GM) Bargaining (if I don't abuse my car, will you spare it mr corvette god) Depression (ill just get rid of it and move on) Acceptance. (My heads are fixed and the beast is back) Maybe I'll start a poll to see which stage forum members are in. And acceptance (I'll drive it till it blows and HOPE the warranty fixes it, maybe I'll find a spare LS7 laying around and fix it up for when that happens).... :hide: |
Originally Posted by forg0tmypen
(Post 1583749786)
Wonder what year it was and how much tracktime it had?
Originally Posted by MTIRC6Z
(Post 1583749831)
Of course we all know that when any engine blows it is a weak stock exhaust valve at fault, there's no way oil starvation, cast pistons, constant race use and/or over-revs, etc, etc, ever had anything to do with it, GM is always at fault....
Originally Posted by Mr. Gizmo
(Post 1583750137)
Did you get a chance to talk to the driver/owner to get specific info about the car? In a C6z between 1 and 2 at the glen what mph gear and rpm would a driver most likely be at? Could there have been a missed down shift?
Originally Posted by Random84
(Post 1583750249)
It's a bummer either way, but heavily tracked cars need more maintenance that traditional vehicles. If this failure was a weekend warrior with a few track days under it's belt, then that's an issue and worthy of complaint.
If it's a "been racing the car for years" semi-pro kind of guy, then this would fall under "maintenance failure" IMHO. Where the line is drawn specifically, I don't know. But I'd guess Katech, LG and others' tear-down schedules are a good place to start. For now, I'll wait for more info before assuming; but given Bill's experience, I'd guess "heavy" track use in the absence of clarification. Might as well be surprised that the carbon ceramic Z07 rotors fail after a few years of road courses, or that crankcase/trans/differential oils need to be replaced more frequently - there has to be a reasonable limit to what we blame valves for, IMHO. What I really don't like, are the low mile garage queens that pop, totally screwing the non-racer with a hefty repair bill. For heavily raced cars, cylinder head maintenance should be on the list along with tires, oil(s), rotors and suspension: **** wears out more quickly than OEM when you flog it like someone else's mean dog on a track for a few years. :D
Originally Posted by Landru
(Post 1583750478)
Did the guy regularly road race the car, Bill?
IF it's a regular wondering why the owner never heard there's a potential issue w/ heads? Ever speak with the guy? Why on earth an informed owner wouldn't have their head redone for heavier track usage is a real mystery to me. :confused2:
Originally Posted by Mark200X
(Post 1583750653)
Since nobody said that, my question is: Why are you making stuff up?
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Originally Posted by pewter99
(Post 1583750870)
do people post stuff to stir the pot? absolutely
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