[Z06] My engine blew up
07-10-2013, 03:53 PM
#41
Drifting
I have often thought about trading for a Z06, but never go beyond the thought because of posts like this one. You would think Chevy would do something for this chronic problem...it has to be hurting sales. Oops, I guess they did do something about it, they built the C7 with a new motor.
07-10-2013, 03:54 PM
#42
Drifting
Member Since: Dec 2012
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07-10-2013, 04:00 PM
#43
Le Mans Master
I have often thought about trading for a Z06, but never go beyond the thought because of posts like this one. You would think Chevy would do something for this chronic problem...it has to be hurting sales. Oops, I guess they did do something about it, they built the C7 with a new motor.
07-10-2013, 04:00 PM
#44
Le Mans Master
Depends on where you go, I guess. My entire engine rebuild (block is still perfectly fine) with forged internals is only costing me ~$4200. Granted, that's just the engine and doesn't include any labor to R&R it from the car.
$4200 for a beefed up LS7 as opposed to ~$15K for a stock LS7 is, to me, cheap insurance.
Side note, Sorry, OP, for your troubles. I keep dumping money into mine in the hopes of avoiding this exact catastrophe. At the rate of failure lately, mine will be among the few modded cars with an engine that's original to the car.
$4200 for a beefed up LS7 as opposed to ~$15K for a stock LS7 is, to me, cheap insurance.
Side note, Sorry, OP, for your troubles. I keep dumping money into mine in the hopes of avoiding this exact catastrophe. At the rate of failure lately, mine will be among the few modded cars with an engine that's original to the car.
07-10-2013, 04:31 PM
#45
Burning Brakes
I hope you are correct. However, even if they do replace it gratis, what sort of assurance will OP have that the replacement engine won't throw a valve next week or next month? If GM does replace the engine, will they cover it with a warranty? What good is a free replacement if it has a 85% chance of likewise being defective?
Well, maybe not 85%, but who really knows with these dang things???? Maybe it IS 85%. But whatever the failure rate is, it is surely too great.
Well, maybe not 85%, but who really knows with these dang things???? Maybe it IS 85%. But whatever the failure rate is, it is surely too great.
07-10-2013, 04:40 PM
#46
Racer
I'm right there with you - 08' with 25k miles. I had the wiggle test done by a dealership in May at ~19k miles if I remember right and it was right at the edge of spec .007 (Max is .008). I'll be doing the wiggle test again myself at 30k if my motor makes it - then if it's still in spec, drive - if out of spec, talk with GM.
07-10-2013, 05:15 PM
#47
I hope you are correct. However, even if they do replace it gratis, what sort of assurance will OP have that the replacement engine won't throw a valve next week or next month? If GM does replace the engine, will they cover it with a warranty? What good is a free replacement if it has a 85% chance of likewise being defective?
Well, maybe not 85%, but who really knows with these dang things???? Maybe it IS 85%. But whatever the failure rate is, it is surely too great.
Well, maybe not 85%, but who really knows with these dang things???? Maybe it IS 85%. But whatever the failure rate is, it is surely too great.
The alternative is to cluelessly **** and moan and cast about for someone else to do the thinking.
07-10-2013, 07:10 PM
#49
Race Director
Man, sorry to hear and hope you can get it resolved with minimum outlay. Not in a Z (yet?) but dadgum, what's goin on? 
07-10-2013, 10:09 PM
#51
Melting Slicks
Sad right. Its hard to stay positive about this car even WITH the "Fix"
Lifters, spun main bearing, dropped valves, dropped SS valves, broken springs, ect.... I've only been here a little over a year and damn this car has a dismal track record. 100% the worst of any car I own or have ever owned.
Sure is fun to drive though...
Lifters, spun main bearing, dropped valves, dropped SS valves, broken springs, ect.... I've only been here a little over a year and damn this car has a dismal track record. 100% the worst of any car I own or have ever owned.
Sure is fun to drive though...
07-10-2013, 10:21 PM
#52
Drifting
Member Since: May 2011
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probably a bad downshift..... 
Sorry for your loss OP.
Side note:
I was on the highway yesterday and a guy with an E92 4 door M3 pulled up along side of me, so i did a nice 3rd gear pull to let him hear it (obviously didnt go past the speed limit). We exchange thumbs ups, and he proceeds to tell me he has a Z06 that just dropped a valve and is now in a local shop getting rebuilt. Not sure if he posts here or not, but just seems to be staggering the amount of occurrences. That makes 75% of the people i personally have met with a Z06 face to face that have blown the motor...mine being in the "post headwork still safe for now" category.
Sorry for your loss OP.
Side note:
I was on the highway yesterday and a guy with an E92 4 door M3 pulled up along side of me, so i did a nice 3rd gear pull to let him hear it (obviously didnt go past the speed limit). We exchange thumbs ups, and he proceeds to tell me he has a Z06 that just dropped a valve and is now in a local shop getting rebuilt. Not sure if he posts here or not, but just seems to be staggering the amount of occurrences. That makes 75% of the people i personally have met with a Z06 face to face that have blown the motor...mine being in the "post headwork still safe for now" category.
same here
07-10-2013, 10:41 PM
#53
Melting Slicks
Sorry for your loss, mine is in the shop for the head upgrade and while dis assembled they found scoring on everything, valves, rockers and cam. They just used a bore scope and a cam bearing is almost gone. They are pulling the whole motor out. I'm having them do it right and go over everything. I was fortunate to get it before it went but it's still a small fortune. 2008 with 5000 miles stock.
07-10-2013, 10:59 PM
#54
Burning Brakes
Man, with all the other issues besides the valve guide wear it really makes you wonder if it's an oiling issue(lack of or oil not up to par all together!?) I mean, guides, lifters, cams, bearings ect ect. 
07-10-2013, 11:07 PM
#55
Race Director
Sad right. Its hard to stay positive about this car even WITH the "Fix"
Lifters, spun main bearing, dropped valves, dropped SS valves, broken springs, ect.... I've only been here a little over a year and damn this car has a dismal track record. 100% the worst of any car I own or have ever owned.
Sure is fun to drive though...
Lifters, spun main bearing, dropped valves, dropped SS valves, broken springs, ect.... I've only been here a little over a year and damn this car has a dismal track record. 100% the worst of any car I own or have ever owned.
Sure is fun to drive though...
Honestly , ever since I got the heads done I'm very happy with the car and drive it like I stole it .. IMO my car is fixed . I've purposely spent less time now on this forum and more time enjoying the car . And it's so much more fun. This forum now , well this section is now an after thought to me . Valve talk lifter talk spintron this and that .. All that matters to me is I'm sure my car is now fixed . Time to move on .
07-10-2013, 11:09 PM
#56
Race Director
Remember most of the lifter problems we are seeing are with after market cams ..can't blame the LS7 for that, it was not designed that way
07-10-2013, 11:10 PM
#57
It's over exaggerated here ...it seems worse than it is . Remember over 25,000 of these engines made ..most of the time people only report problems .
Honestly , ever since I got the heads done I'm very happy with the car and drive it like I stole it .. IMO my car is fixed . I've purposely spent less time now on this forum and more time enjoying the car . And it's so much more fun. This forum now , well this section is now an after thought to me . Valve talk lifter talk spintron this and that .. All that matters to me is I'm sure my car is now fixed . Time to move on .
Honestly , ever since I got the heads done I'm very happy with the car and drive it like I stole it .. IMO my car is fixed . I've purposely spent less time now on this forum and more time enjoying the car . And it's so much more fun. This forum now , well this section is now an after thought to me . Valve talk lifter talk spintron this and that .. All that matters to me is I'm sure my car is now fixed . Time to move on .
07-10-2013, 11:10 PM
#58
Le Mans Master
It's over exaggerated here ...it seems worse than it is . Remember over 25,000 of these engines made ..most of the time people only report problems .
Honestly , ever since I got the heads done I'm very happy with the car and drive it like I stole it .. IMO my car is fixed . I've purposely spent less time now on this forum and more time enjoying the car . And it's so much more fun. This forum now , well this section is now an after thought to me . Valve talk lifter talk spintron this and that .. All that matters to me is I'm sure my car is now fixed . Time to move on .
Honestly , ever since I got the heads done I'm very happy with the car and drive it like I stole it .. IMO my car is fixed . I've purposely spent less time now on this forum and more time enjoying the car . And it's so much more fun. This forum now , well this section is now an after thought to me . Valve talk lifter talk spintron this and that .. All that matters to me is I'm sure my car is now fixed . Time to move on .
07-10-2013, 11:11 PM
#59
Racer
Sorry to hear the news OP. Mine is in the shop getting the heads redone on my dime. Pisses me off when I haven't had the car 2 months and is not even close to cracking 10K miles yet. One expensive toy I strapped myself to, I may not own it as long as I thought I would - and that sucks. 
07-10-2013, 11:16 PM
#60
Race Director
yeap you'd be surprised how sucked in to the negativity you can get .