View Poll Results: If you've Overheated What is Your Stage Aero 1, 2 or 3
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ZO6 overheating issues ***MEGA Merge***
#5241
Le Mans Master
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GM Asks Judge to Dismiss Lawsuit
Not a surprising turn:
http://www.corvetteblogger.com/2017/...ooling-issues/
GM’s Lawyers Ask Judge to Dismiss Lawsuit Over Corvette Z06’s Cooling Issues
By Mitch Talley - Oct 20, 2017275
"GM Lawyers Ask Judge to Dismiss Lawsuit Over Corvette Z06's Cooling Issues
Attorneys for General Motors are making their arguments to try and get a judge to approve a motion to dismiss a class action lawsuit filed against GM for engine overheating in the seventh generation Corvette Z06.
Some owners have been complaining ever since the 2015 Z06 came out that a design defect causes the 650-horsepower Z06 engine to overheat when racing. That makes the car useless for the purpose they allege that GM promoted all along by claiming in public that the Z06 was bred from racing stock.
GM has fired back, though, and claims that the Z06 is indeed not a race car and has limitations like any vehicle. “Its performance, especially at top speeds, also depends heavily on the driver’s skill and attention,” the motion to dismiss argues. “The Z06 owner’s manual gives detailed instructions for track driving. There is no allegation that any of these plaintiffs followed these instructions.”
Plaintiffs lawyer Stuart Grossman of Grossman Roth Yaffa Cohen in Coral Gables, Fla., claims that the situation is “terribly uncomplicated,” in an online story posted by Daily Business Review. GM “put a premium on the size to keep it aerodynamic and small and sleek, when the area in which the engine is housed is inadequate to give it proper ventilation,” Grossman said.
GM is asking U.S. District Judge Darrin Gayles to dismiss the suit, arguing that the plaintiffs all bought their cars from independent dealers. “Plaintiffs thus cannot allege a duty to disclose because they did not have, and do not allege, any direct relationship with GM,” the Sept. 25 motion to dismiss argues.
In the Daily Business Review story, Grossman said the claims involve General Motors dealers who could not offer a repair or replacement for the plaintiffs’ cars.
“Unlike air bag litigation, where there could be numerous factors involved in that, this whole thing is contained under the GM umbrella, and that’s why there’s only one defendant,” he said. “One corporation is responsible for the design, manufacture, sale and repair of the product.”
Source:
DailyBusinessReview.com"
http://www.corvetteblogger.com/2017/...ooling-issues/
GM’s Lawyers Ask Judge to Dismiss Lawsuit Over Corvette Z06’s Cooling Issues
By Mitch Talley - Oct 20, 2017275
"GM Lawyers Ask Judge to Dismiss Lawsuit Over Corvette Z06's Cooling Issues
Attorneys for General Motors are making their arguments to try and get a judge to approve a motion to dismiss a class action lawsuit filed against GM for engine overheating in the seventh generation Corvette Z06.
Some owners have been complaining ever since the 2015 Z06 came out that a design defect causes the 650-horsepower Z06 engine to overheat when racing. That makes the car useless for the purpose they allege that GM promoted all along by claiming in public that the Z06 was bred from racing stock.
GM has fired back, though, and claims that the Z06 is indeed not a race car and has limitations like any vehicle. “Its performance, especially at top speeds, also depends heavily on the driver’s skill and attention,” the motion to dismiss argues. “The Z06 owner’s manual gives detailed instructions for track driving. There is no allegation that any of these plaintiffs followed these instructions.”
Plaintiffs lawyer Stuart Grossman of Grossman Roth Yaffa Cohen in Coral Gables, Fla., claims that the situation is “terribly uncomplicated,” in an online story posted by Daily Business Review. GM “put a premium on the size to keep it aerodynamic and small and sleek, when the area in which the engine is housed is inadequate to give it proper ventilation,” Grossman said.
GM is asking U.S. District Judge Darrin Gayles to dismiss the suit, arguing that the plaintiffs all bought their cars from independent dealers. “Plaintiffs thus cannot allege a duty to disclose because they did not have, and do not allege, any direct relationship with GM,” the Sept. 25 motion to dismiss argues.
In the Daily Business Review story, Grossman said the claims involve General Motors dealers who could not offer a repair or replacement for the plaintiffs’ cars.
“Unlike air bag litigation, where there could be numerous factors involved in that, this whole thing is contained under the GM umbrella, and that’s why there’s only one defendant,” he said. “One corporation is responsible for the design, manufacture, sale and repair of the product.”
Source:
DailyBusinessReview.com"
Last edited by Big Lebowski; 10-20-2017 at 05:51 PM.
#5242
Pro
I have been looking at upgrading to a C7 Z06 M7. I am currently looking at a 2015 model. I called up my local GM dealer (not the one I am looking to buy from) and asked about the retro fit parts that were available and what needed to be done to address the overheating issue on the track.
They were extremely helpful and did a bunch of research. They even pulled in a 2018 M7 and put it side by side with a used 2015 M7 they had on the lot to see verify their research.
What they found is (as has been discussed somewhat on this forum) that there is a GM radiator kit that includes hoses which should fix the problem.
There were three part numbers that this can go by. The reason is that it has been replaced by a couple of iterations. In case anyone needs it I am listing all three along with a picture below. The picture was supplied by the dealership I am looking to buy from.
Part Numbers:
84037858
84201727
84309470
I want to extend a big thanks to Josh and Todd at the Penske GM dealer in Indianapolis for their help with this.
They were extremely helpful and did a bunch of research. They even pulled in a 2018 M7 and put it side by side with a used 2015 M7 they had on the lot to see verify their research.
What they found is (as has been discussed somewhat on this forum) that there is a GM radiator kit that includes hoses which should fix the problem.
There were three part numbers that this can go by. The reason is that it has been replaced by a couple of iterations. In case anyone needs it I am listing all three along with a picture below. The picture was supplied by the dealership I am looking to buy from.
Part Numbers:
84037858
84201727
84309470
I want to extend a big thanks to Josh and Todd at the Penske GM dealer in Indianapolis for their help with this.
#5243
Pro
I'm wondering if adding this GM secondary radiator is as or more effective than changing out the stock radiator for a DeWitts or better aftermarket unit?
Any opinions or experience from anyone?
Thanks
Any opinions or experience from anyone?
Thanks
The following users liked this post:
BlackMoon (10-22-2017)
#5245
Premium Supporting Vendor
Member Since: Oct 2001
Location: Dallas Tx
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St. Jude Vendor Donor '03-'04-'05-'06-'07-'08-'09-'10-'11
We just finished our cooling kit on a 2017 that had the overheating issue in under 2 laps.
Even the 2017 cars have the issue. Nothing was fixed for 2017, just the Press releases.
The only solution for GM is to offer the new ZR1 front fascia and cooling package to all C7 Z06 cars.
We have fixed dozens of the C7-Z06 cooling issues.
the problem IS what it IS and either GM admits it and fixes it or give $$$ to owners so we can fix it.
I hate to slam GM and show any disrespect but they are Disrespecting Corvette owners by not doing the right thing.
Call us if you are impatient. We have all the necessary transmission cooling package as well.
AND we offer pick up and delivery to anywhere in the Lower 48
LG Motorsports
972-429-1963
PS: GM -- call us we will give you a great price for 10,000 of our kits or license it to you. (or you can copy it and claim genius) either way, take care of your customers!!
Even the 2017 cars have the issue. Nothing was fixed for 2017, just the Press releases.
The only solution for GM is to offer the new ZR1 front fascia and cooling package to all C7 Z06 cars.
We have fixed dozens of the C7-Z06 cooling issues.
the problem IS what it IS and either GM admits it and fixes it or give $$$ to owners so we can fix it.
I hate to slam GM and show any disrespect but they are Disrespecting Corvette owners by not doing the right thing.
Call us if you are impatient. We have all the necessary transmission cooling package as well.
AND we offer pick up and delivery to anywhere in the Lower 48
LG Motorsports
972-429-1963
PS: GM -- call us we will give you a great price for 10,000 of our kits or license it to you. (or you can copy it and claim genius) either way, take care of your customers!!
The following 3 users liked this post by LG Motorsports:
#5246
Pro
#5247
Premium Supporting Vendor
Member Since: Oct 2001
Location: Dallas Tx
Posts: 8,392
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St. Jude Vendor Donor '03-'04-'05-'06-'07-'08-'09-'10-'11
2017 cars have it and it is insufficient.
Check out the october issue of Corvette magazine with the article of the Callaway C7 Z06 with our cooling package installed. The article testifies to the success of our package.
LG
#5248
Pro
Thanks but for occasional tracking I'm not spending 4k on a package plus that front bumper is pretty hideous. I haven't had any issues (yet) but if I encounter any I'll most likely try the GM add on first.
We offer this cooler plus an external oil cooler with our package. The external radiator is not enough to stop the overheating.
2017 cars have it and it is insufficient.
Check out the october issue of Corvette magazine with the article of the Callaway C7 Z06 with our cooling package installed. The article testifies to the success of our package.
LG
2017 cars have it and it is insufficient.
Check out the october issue of Corvette magazine with the article of the Callaway C7 Z06 with our cooling package installed. The article testifies to the success of our package.
LG
#5249
Premium Supporting Vendor
Member Since: Oct 2001
Location: Dallas Tx
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St. Jude Vendor Donor '03-'04-'05-'06-'07-'08-'09-'10-'11
But I have to disagree with your comment on the bumper
We get 90% who say it looks good, and functional.
Lou Gigliotti
LGM
Last edited by LG Motorsports; 10-22-2017 at 05:51 PM.
#5250
Melting Slicks
As Lou mentions, even ‘17 M7 and up Z’s can still overheat on a road course, BUT there are M7 owners here that are incredibly quick such as Porscha; Bill; Rikhek, etc that do not overheat the M7 on track. They know that sometimes torque > hp (rpms).
Bish
The following 2 users liked this post by thebishman:
LG Motorsports (10-23-2017),
racerx8 (12-07-2017)
#5252
My 16 Z06 overheated as described by many. I believed that the 17 had the improvements necessary for the track. My first event at Laguna Seca proved me wrong. Per the PDR water and oil temps were the same for both the 16 and 17. Very disappointing!
#5253
Melting Slicks
A8 or M7 for 16 and 17?
#5255
Melting Slicks
sounds like some 2017 M7 still overheats? the extra cooler didn't help?! wonder what's the % of 17 M7 still overheats as I probably won't track it for awhile. man this sucks!
#5256
Tech Contributor
Member Since: Oct 1999
Location: Charlotte, NC (formerly Endicott, NY)
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I have not been taking it easy on the car and have set personal best lap times of 2:05:81 at the Glen and 2:04:87 at VIR. I run in 3rd and 4th gear and sometimes use 5th at the end of long straights but have been running to 152-154 mph in 4th and not bothering to shift up. I don't use 2nd gear unless the speed is below 42 or 43 mph so don't rev the engine up at part throttle producing heat but not any more HP than 3rd at a wider throttle opening and lower rpm.
Bill
#5257
Can you comment how the process went to upgrade your car with the second radiator? What kind of costs were involved? I assume you had it done at the dealer?
And come on, break into the 1:xx.xx at VIR full! I bet you can do it!
And come on, break into the 1:xx.xx at VIR full! I bet you can do it!
I wouldn't say that. My 15 M7 with the GMPP Secondary Radiator (same as the stock 17 supplemental radiator) does not over heat. I have participated in events where temps were in the low 90s and oil temps never exceeded the mid 270s and coolant temps were in the mid 220s. The oil temp was around 30 degrees below the over heat temp and the coolant temp was about 40 degrees below the over heat temp.
I have not been taking it easy on the car and have set personal best lap times of 2:05:81 at the Glen and 2:04:87 at VIR. I run in 3rd and 4th gear and sometimes use 5th at the end of long straights but have been running to 152-154 mph in 4th and not bothering to shift up. I don't use 2nd gear unless the speed is below 42 or 43 mph so don't rev the engine up at part throttle producing heat but not any more HP than 3rd at a wider throttle opening and lower rpm.
Bill
I have not been taking it easy on the car and have set personal best lap times of 2:05:81 at the Glen and 2:04:87 at VIR. I run in 3rd and 4th gear and sometimes use 5th at the end of long straights but have been running to 152-154 mph in 4th and not bothering to shift up. I don't use 2nd gear unless the speed is below 42 or 43 mph so don't rev the engine up at part throttle producing heat but not any more HP than 3rd at a wider throttle opening and lower rpm.
Bill
#5258
Melting Slicks
I wouldn't say that. My 15 M7 with the GMPP Secondary Radiator (same as the stock 17 supplemental radiator) does not over heat. I have participated in events where temps were in the low 90s and oil temps never exceeded the mid 270s and coolant temps were in the mid 220s. The oil temp was around 30 degrees below the over heat temp and the coolant temp was about 40 degrees below the over heat temp.
I have not been taking it easy on the car and have set personal best lap times of 2:05:81 at the Glen and 2:04:87 at VIR. I run in 3rd and 4th gear and sometimes use 5th at the end of long straights but have been running to 152-154 mph in 4th and not bothering to shift up. I don't use 2nd gear unless the speed is below 42 or 43 mph so don't rev the engine up at part throttle producing heat but not any more HP than 3rd at a wider throttle opening and lower rpm.
Bill
I have not been taking it easy on the car and have set personal best lap times of 2:05:81 at the Glen and 2:04:87 at VIR. I run in 3rd and 4th gear and sometimes use 5th at the end of long straights but have been running to 152-154 mph in 4th and not bothering to shift up. I don't use 2nd gear unless the speed is below 42 or 43 mph so don't rev the engine up at part throttle producing heat but not any more HP than 3rd at a wider throttle opening and lower rpm.
Bill
Hope mine won't overheat, no method to test it until I actually track it right.
#5259
#5260
My 2017 is now at the dealer with a defective engine. The mechanic believes a valve spring failed causing the lifter to beat on the cam flattening both the lifter and cam. The metal from went through the engine. Also #1 cylinder is damaged. Awaiting GM approval to replace engine. Very disappointing and I am not sure what to do next.