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I went to a driving school at BIR in MN this past Monday and experienced MAJOR power loss. So much that on the straight away I couldn't reel in a bone stock 15' stingray M7. When we exited the track I even went up to the guy and asked what mods were done to his car. He laughed and popped the hood and said none. This has to be from heat but 200hp really. Anyone else experience similar power loss.
"The most track capable vette ever" Capable of what? Overheating, power steering boiling, heat soak, power loss. If that's the definition of capable you guys got one hell of a track car.
"The most track capable vette ever" Capable of what? Overheating, power steering boiling, heat soak, power loss. If that's the definition of capable you guys got one hell of a track car.
Considering its electric power steering, I'm amazed it can boil its non-existent fluid. . .
OP, you have any data on it? I'm interested in seeing it; that's a serious power loss.
Maybe GM is parsing their words: the car is "track capable" [but needs modifications paid for by the owner, that likely void the factory warranty,
to make it reliable just for HPDE use as such].
I love the car (don't own one) and what it is and represents, but this is all sounding more & more like slick marketing, to me.
Intentional sleight-of-hand ?
Bottom line, GM has delivered the platform (in their view). The owner can take it to the next level on their own dime.
I think GM does not want to pay for power-train replacements for anyone tracking their car. Maybe they soured on this with
the LS7 engine issues...(and yes, we know that not all of those engines that had problems were in cars that were tracked).
It's the only explanation I can think of, as GM's engineers are certainly capable of understanding and solving the C7 power-train issues
that many are reporting on the track.
Let's hope GM is forthcoming with solutions, post-production or not...
Last edited by Gary '09 C6; 05-07-2015 at 10:41 PM.
Reason: sp
I went to a driving school at BIR in MN this past Monday and experienced MAJOR power loss. So much that on the straight away I couldn't reel in a bone stock 15' stingray M7. When we exited the track I even went up to the guy and asked what mods were done to his car. He laughed and popped the hood and said none. This has to be from heat but 200hp really. Anyone else experience similar power loss.
Pretty sure he is judging based on the z06's base HP minus the stingray's HP, which is over 200 if the Stingray is truly pulling ahead in a straight away.
I went to a driving school at BIR in MN this past Monday and experienced MAJOR power loss. So much that on the straight away I couldn't reel in a bone stock 15' stingray M7. When we exited the track I even went up to the guy and asked what mods were done to his car. He laughed and popped the hood and said none. This has to be from heat but 200hp really. Anyone else experience similar power loss.
Let's see the data. Have you ever been passed by a car with less horsepower on a track? It happens every day.
This does not sound like a heat issue to me without some data.
I think he made it clear...he was not able to reel in a plain C7, with 200 less hp with both going down a STRAIGHT at wot. Not so hard to understand what he is saying.
I went to a driving school at BIR in MN this past Monday and experienced MAJOR power loss. So much that on the straight away I couldn't reel in a bone stock 15' stingray M7. When we exited the track I even went up to the guy and asked what mods were done to his car. He laughed and popped the hood and said none. This has to be from heat but 200hp really. Anyone else experience similar power loss.
That just plain sucks, sorry to hear about this OP (is your car an A8 or M7)?
I think he made it clear...he was not able to reel in a plain C7, with 200 less hp with both going down a STRAIGHT at wot. Not so hard to understand what he is saying.
This is exactly what happened. The driver of the stingray WAS a very good driver but coming out of turn 10 I could not catch him by turn 1. I should have been able to hit 160 in the straight and I was struggling to hit 152. I will upload the data today. My car is a m7 3lz stage 1 with the stage 3 spoiler. Side skirts and stage two front end. I want to say I'm pretty sure my coolant was 240 and oil was 260. I was on SC2's.
The air temps were pretty cool low to mid 70s with a cool breeze and overcast all day. I thought it was a perfect weather day for he track.
I think he made it clear...he was not able to reel in a plain C7, with 200 less hp with both going down a STRAIGHT at wot. Not so hard to understand what he is saying.
It is hard to understand when you are in denial.
Since this is the first C7 Z06 to overheat at the track EVER maybe people are just too shocked to believe it. But if the Z06 was overheating consistently by many users here at different tracks and maybe if the three times a professional race car driver tested it for Motor Trend and overheated it all three of those times within 4 months - maybe - just maybe it would be easier to believe the OP.
I am sure in two moths when we are in High Summer this problem will sort itself out.
Considering its electric power steering, I'm amazed it can boil its non-existent fluid. . .
OP, you have any data on it? I'm interested in seeing it; that's a serious power loss.
Like in my thread you deflect away from the issue, just face the fact that the car has flaws and GM did a better job of marketing this car than those did with the Mayweather fight, and they did a great job because the fight stunk.
I was mistaken. Coolant temp high was 228 and oil was 273 here is the cosworth data from that session with the stingray. I also did 5 sessions using two full tanks of gas that day.
05-07-2015, 09:53 PM
Down 200 hp at the track
