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GM should cover all ZO6's engines for 10year 120,000 miles

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Old 08-10-2017, 04:21 PM   #1
Mlcn1962
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Default Should GM cover all ZO6's engines for 10year 120,000 miles

Porsche just announced that all 991.1 GT3 in existence engine will be covered for 10 years 120,000 due to engine failures and some fires. Should GM cover all C7 ZO6's engines, due to heating issues for 10 years 120,000 to restore confidence and have it transferable to the next owner like Porsche does?

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Old 08-10-2017, 04:33 PM   #2
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The folks over at Rennlist, led by Rob (robmypro) put together a major presentation detailing concerns about early model 991.1 GT3 engine failures. They secured a meeting with PNA and acheived excellent results. Some folks here enjoined the lawsuit against GM for heating issues; a completely different approach, leading to who knows what. Maybe you should start a "concerned owners group" like Rob did. All the information is there on Rennlist.
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Old 08-10-2017, 04:56 PM   #3
Bill Dearborn
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Over heating on a small number of cars isn't the same as an engine failure where the engine has to be removed from the car and repaired or replaced. Over heating means slowing the car and waiting for it to cool down.

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Old 08-10-2017, 05:16 PM   #4
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Quote:
Originally Posted by Bill Dearborn View Post
Over heating on a small number of cars isn't the same as an engine failure where the engine has to be removed from the car and repaired or replaced. Over heating means slowing the car and waiting for it to cool down.

Bill
I agree with you Bill. But if Porsche decided to do this its because just like GM they believe the failiures where just isolated incidents. By addressing the problem they made sure the resale market for used .1 GT3's stays strong.

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Old 08-10-2017, 05:26 PM   #5
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Right, but no doubt it was also influenced by diesel gate, Porsches parent company. Wait we had ignition gate?! Over heating and engine failure are 2 different problems, with the former without remedy, except to park it. If I understand the heating problem, many other factors can contribute to overheating, none of which have to do with lack of cooling, which are fixable.
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Old 08-10-2017, 05:38 PM   #6
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Quote:
Originally Posted by Bill Dearborn View Post
Over heating on a small number of cars isn't the same as an engine failure where the engine has to be removed from the car and repaired or replaced. Over heating means slowing the car and waiting for it to cool down.

Bill
Those Porsche engine failures required spending about 40 grand to get a factory approved engine rebuild, as I recall. Nice that Porsche appears to be stepping up to the plate. Do they still exclude coverage on vehicles which are tracked or raced, or has that changed too?
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Old 08-10-2017, 05:42 PM   #7
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Quote:
Originally Posted by Bill Dearborn View Post
Over heating on a small number of cars isn't the same as an engine failure where the engine has to be removed from the car and repaired or replaced. Over heating means slowing the car and waiting for it to cool down.

Bill
I don't see a big difference, in either case you can't keep driving the car.

I much prefer the Porsche problem. At least those cars work well until they need an engine replacement. With the C7 in 2.5 years of ownership it probably ran well for only half a dozen events. When, not if, the heat stress causes engine failure you'll need one replaced anyway. We have a compound problem here with engine failure mainly a symptom of larger built in design limitations.

There are three reasons this resolution won't work for Chevy. First, its enthusiasts don't stick together but rather work against eachother. Second, the C7 Z has multiple faults that prevents heavy duty use. What are you going to address, the charge air cooling?, the power steering cooling?, the engine cooling? Third, an extended warranty doesn't fix limp modes. A warranty policy will not cool the car only solid engineering can.
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Old 08-10-2017, 05:47 PM   #8
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The only exclusion that I know of is all the engines in the R, RS, and 991.2 GT3 are exempt. Haven't seen the fine print, but Porsche approved the verbiage in the statement made by Rob to the group that I'm paraphrasing above.
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Old 08-10-2017, 05:53 PM   #9
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Many of us that had/have C6 Z06's asked for something similar to cover our blown engines if we were to drop a valve in our LS7's.

We didn't get it, and I doubt the C7 owners will either.
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Old 08-10-2017, 06:56 PM   #10
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Well with the C6 Z06 owners they were whining after popping a motor after 10,000 track miles. GM I think had enough of that over site marketing statement about track ready
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Old 08-10-2017, 07:00 PM   #11
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Keep in mind the warranty only covers a single failure mode.

Comparing a Z06 engine overheating to a 50k GT3 engine failure is just silly.

Porsche knows 90% of GT3's will never see anything close to 120k mile in 10 years. It's a calculated effort to generate positive press.
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Old 08-10-2017, 07:02 PM   #12
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Quote:
Originally Posted by SBC_and_a_stick View Post

When, not if, the heat stress causes engine failure you'll need one replaced anyway.
There's very scant evidence of that happening. The various engine management "nannies" work quite well to prevent overheating to the point of engine failure.
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Old 08-10-2017, 07:07 PM   #13
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Quote:
Originally Posted by Mlcn1962 View Post
Porsche just announced that all 991.1 GT3 in existence engine will be covered for 10 years 120,000 due to engine failures and some fires. Should GM cover all C7 ZO6's engines, due to heating issues for 10 years 120,000 to restore confidence and have it transferable to the next owner like Porsche does?
GM didn't extend squad after the LS7 valve drop problem so good luck with the heating lol!
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Old 08-10-2017, 07:11 PM   #14
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I love my Z06, but for Corvette owners to continue to assert the overheating issues is a small number of isolated incidents in disingenuous. It is clearly a serious issue with failure rates and warranty repairs well outside the acceptable rate of failure/defects by any product standard.
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Old 08-10-2017, 07:59 PM   #15
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Engine failure is one thing

comparing it to overheating is ridiculous.

after the z06 cools off you drive it try that with engine FAILURE
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Old 08-10-2017, 08:21 PM   #16
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Quote:
Originally Posted by Warp Factor View Post
There's very scant evidence of that happening. The various engine management "nannies" work quite well to prevent overheating to the point of engine failure.
What evidence do you need? You don't believe that repeated runs to 262* coolant and 320* oil reduce engine life and that they can lead to instant engine failure? Ask any weathered circuit racer if they are comfortable running their engines to those thresholds repeatedly.

My replacement track car has a warning light set by the OEM manufacturer when coolant surpasses 215*. I can hit that in the C7 Z on my way to work on a daily basis just by driving in a lower gear.
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Old 08-10-2017, 08:25 PM   #17
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Quote:
Originally Posted by jimman View Post
Well with the C6 Z06 owners they were whining after popping a motor after 10,000 track miles. GM I think had enough of that over site marketing statement about track ready
maybe a few, but there were several with no track time...and that lawsuit is still ongoing
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Old 08-10-2017, 08:44 PM   #18
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Default It's just a probability calculation! ;)

They could bullet proof the car like the C6 ZR1 and try to charge $20K more, or take a calculated risk, and except a failure rate!
They got this!

I rather see a shorter warranty translating into more money put into the motor.
Besides - it's warrantied and NOT YOUR PROBLEM! SC, same - same! (Document it and hand Them the keys!)

AND GET READY FOR AT A MINIMUM HYBRIDS BEING MANDATORY NEW VEHICLES!

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Old 08-10-2017, 09:28 PM   #19
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Quote:
Originally Posted by Bill Dearborn View Post
Over heating on a small number of cars isn't the same as an engine failure where the engine has to be removed from the car and repaired or replaced. Over heating means slowing the car and waiting for it to cool down.

Bill

You mean like the Ls7 Engine failures? If the dropped valve issue is such a small issue GM could have salvaged alot of their loyal customer base with a 10 yr /120k warranty. I had a 2009 Traverse with timing chain issue that they gave us that warranty! But my 90K corvette gets nothing from GM but a denial of the issue. If I were a Porsche guy and had them back that car that way I would be a lifer with them.
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Old 08-10-2017, 09:37 PM   #20
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Quote:
Originally Posted by jimman View Post
Well with the C6 Z06 owners they were whining after popping a motor after 10,000 track miles. GM I think had enough of that over site marketing statement about track ready
That's pretty inaccurate. MANY guys that dropped valves had NO track time. There was a survey here sometime ago. Yes there were plenty of track guys who were covered by GM but they were not the majority. I knew several guys and met others at speed shops that dropped valves only one was a track guy.
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