C7 Corvette

[MrH]

Also, serious lol if you think you can be full throttle on the autobahn for the equivalent of a full tank of gas.  It's not like that at all.

[r0tor]

High speed cruising = lots of cooling too.

Take your car out, floor the gas for a few miles continuously, and get back to me what happens to the temps

[r0tor]

Also, serious lol if you think you can be full throttle on the autobahn for the equivalent of a full tank of gas.  It's not like that at all.

And you realize that a surface temp near the asphalt (you know, what is doing the cooling) of 86 deg F can happen at much lower then an ambient temp of 86 right?  You realize that track temps are often 110+ on an average 86deg sunny summer day?

[12,000 RPM]

Take your car out, floor the gas for a few miles continuously, and get back to me what happens to the temps

Again, cooling. Arent u an engineer at a steam plant? This is basic heat transfer.

I still stand by the front opening theory, and the GM engineer indirectly confirmed it. They had to choose between drag and cooling... and with the Z07 package they compromised on both

[SVT666]

GM has made claims that the Z06 is the most track capable Corvette ever.  You can't make those claims if your car loses a bunch of power after half a lap and then overheats after just a handful of laps. 

New advertising slogan:  "The 2015 Corvette Z06 looks like the most track capable Corvette ever...but it's not"

[MrH]

GM has made claims that the Z06 is the most track capable Corvette ever.  You can't make those claims if your car loses a bunch of power after half a lap and then overheats after just a handful of laps. 

New advertising slogan:  "The 2015 Corvette Z06 looks like the most track capable Corvette ever...but it's not"

The situation described by the corvette engineer that happened at the media day said nothing about losing a bunch of power.

[hotrodalex]

The situation described by the corvette engineer that happened at the media day said nothing about losing a bunch of power.

And it was only one car.

[SVT666]

The situation described by the corvette engineer that happened at the media day said nothing about losing a bunch of power.

The ECU issue is widespread.

[Soup DeVille]

Also, serious lol if you think you can be full throttle on the autobahn for the equivalent of a full tank of gas.  It's not like that at all.

I remember an argument with somebody about the Bugatti Veyron; He thought it sucked that at full speed it would run out of fuel in 20 minutes- I'm like "where are you going to go 250 MPH for 20 minutes at?"

[r0tor]

And it was only one car.

A design deficiency affects all cars

[r0tor]

Again, cooling. Arent u an engineer at a steam plant? This is basic heat transfer.

I still stand by the front opening theory, and the GM engineer indirectly confirmed it. They had to choose between drag and cooling... and with the Z07 package they compromised on both

Take immense load plus, small openings, and then consider what happens to the airflow at speed.... Traveling at 150 mph doesn't necessarily mean a ton more cooling then at 50mph.  I would think an engineer can figure out you can only force so much air through a radiator until it becomes a large enough restriction that the air diverts to a lower pressure area.

[12,000 RPM]

Take immense load plus, small openings, and then consider what happens to the airflow at speed.... Traveling at 150 mph doesn't necessarily mean a ton more cooling then at 50mph.  I would think an engineer can figure out you can only force so much air through a radiator until it becomes a large enough restriction that the air diverts to a lower pressure area.

I think it would still get more than enough airflow at 150 MPH even with the flow diversion

But at least you agree that the grille opening is too small for the Z06's cooling loads

[Gotta-Qik-C7]

http://www.caranddriver.com/reviews/2015-chevrolet-corvette-z06-convertible-automatic-test-review

[GoCougs]

BOOM.

[FlatBlackCaddy]

BOOM.

I didn't read the article, did this one blow up too?

[SJ_GTI]

Why does FBC hate America? 

[MexicoCityM3]

I just checked and the Z06 is now available here in the land of tacos. Will go take a look.

[Gotta-Qik-C7]

I didn't read the article, did this one blow up too?

Nope but it was out lapped by a Miata......

[hotrodalex]

Nope but it was out lapped by a Miata......

After an hour a bicycle went around the track faster.

[68_427]

http://youtu.be/H34FHs9Pddw

[SVT666]

That's really fast.

[FlatBlackCaddy]

Drag Racing....

[SVT32V]

Wow at the 132 mph trap speed, either the air is cold and incredibly high pressure or this is not stock. That is a lot faster than what the rags get, OTOH early spring and late fall are where the hero runs happen in the accompanying good air.

[GoCougs]

Hmmm. I don't buy that it's stock. 11.2 @ 127 vs. 10.4 @ 133 is a big jump in power as evidenced by the trap speed. Lower gears, drag radials, the most advantageous atmo conditions might get you there, but then that wouldn't be stock.

[12,000 RPM]

Cant see the vid... did someone get a stock Z06 through the quarter in 10.4? That would indeed be a 15% power boost all else equal

Drag calculators (for whatever thats worth) say a 133 trap is appropriate for a 3600lb 660HP car though 

[GoCougs]

Cant see the vid... did someone get a stock Z06 through the quarter in 10.4? That would indeed be a 15% power boost all else equal

Drag calculators (for whatever thats worth) say a 133 trap is appropriate for a 3600lb 660HP car though 

That's rear wheel horsepower .

Unless stated those calculators typically spit out rear wheel horsepower. This one specifically states as such, and 3,600 lbs and 133 mph is 661 rwhp.

Those calculators are rather ham fisted, and make assumptions probably along the lines of RWD, 3sp AT, and use a basic P = F*V calculation so for example a GTR or 911 Turbo total breaks those calculators.

[SVT666]

[68_427]

Hmmm. I don't buy that it's stock. 11.2 @ 127 vs. 10.4 @ 133 is a big jump in power as evidenced by the trap speed. Lower gears, drag radials, the most advantageous atmo conditions might get you there, but then that wouldn't be stock.

Atco is notoriously fast.  It's somewhat believable.  I believe there's been stock M3/4s in the 11s there.

[FlatBlackCaddy]

Summers heating up, and the corvette forum is starting to have a lot of buyers experience issues on the track with ambient temps starting to touch the 80's. It's going to be pretty sad once the temps go up another 15 degrees.

It's typical GM, they will make such a wonderful car in just about every respect, save for one stupid hard headed issue that they just have to throw in there.

This thing was designed POORLY(either the airflow, cooling system in general, or the parameters of the ECU). Either way, they are keeping the legacy alive as far as screwing Z06 buyers over. I'm guessing though that most would agree a limp mode on the track is better than a blown LS7.

Here's to hoping the C8 is better.

[Cookie Monster]

Summers heating up, and the corvette forum is starting to have a lot of buyers experience issues on the track with ambient temps starting to touch the 80's. It's going to be pretty sad once the temps go up another 15 degrees.

It's typical GM, they will make such a wonderful car in just about every respect, save for one stupid hard headed issue that they just have to throw in there.

This thing was designed POORLY(either the airflow, cooling system in general, or the parameters of the ECU). Either way, they are keeping the legacy alive as far as screwing Z06 buyers over. I'm guessing though that most would agree a limp mode on the track is better than a blown LS7.

Here's to hoping the C8 is better.

If they can't even get the cooling right for a front engine car, I wonder how badly they'll mess up a mid engine car (if the C8 is indeed MR).