ipse dixit

I've seen a C7 Z06 go into limp mode with ambient temps around 95-100F after about 10 minutes on the track.

Doesn't mean the C7 Z06 is a wicked fast car, it is. Just that it can't pull of a impersonation like a Porsche GT car.

audipwr1

The car I drove was a grand sport so I can't speak directly to Z06

But my guess is that you are one aftermarket radiator away from fixing that problem

GT cars need toe links / coolant lines / etc to make them more reliable so doing some tweaks to other cars not a far fetched solution

You do have 100k to play with on the used vet versus the GT3 to make it right

997s07

Only the Mezgers outdid their regular 911 brothers and even that wasn't too significant. The 991 GT3 engine is not doing so good, is it? A lot more problems than those being reported on the 991 GT forum.

ipse dixit

The problems with the Z06 come from the supercharger. The base C7 iterations, incl. the GS, are a basic V8.

Chevy engineers did something wrong in how they designed the layout of the supercharger vis-a-vis the hood. Radiators, different coolants, etc. have all been tried, with no real fix that's been reliable or permanent.

Too bad, cuz otherwise the C7 Z06 would be America's Godzilla.

Buteo

What does a C2S run? I saw Manthey had a 7:29 in their GT4 (tires/bushings/ no power adders).

Archimedes

Yeah, that Manthey car was not just tires and bushings. It was over $10k of mods and not representative of a stock GT4. Once you start modifying the car you can't compare it to other, unmodified, cars.

Stock GT4 best verified time I've seen is Gebhardt's 7:42. C2S ran a 7:379, granted with Timo Kluck at the wheel and he's probably good for a couple of seconds given his comparison to Gebhardt in other cars.

My point is simply all these cars are actually pretty close performance wise, they're just marketed so well that the public perceives bigger differences than what really exists.

Jabs1542

My experience has been that the variability in the driver far outweighs the differences in the cars. Last week at Thunderbolt I routinely spanked a GTS, prior to that at Mid Ohio I was proud to be passing a GT3 on a regular basis, prior to that at Summit Point I was passing two GT4s, meanwhile at Thunderbolt an instructor was passing me in his Cayman.

This is like the accuracy precision debate, you're hanging on to the accuracy of the car's lap times (within decimals of a second) while the driver just isn't that precise, not to mention other traffic on the track.

We have a rule within our group, it's not how fast your car is, it's how fast you can make it. Our group is a random bunch, many Porsches, few Ferraris, couple of Vettes, etc. Our expression, "back your smack at the track."

Dewinator

Yeah definitely, one yahoo in a fast car driving a lap faster than another yahoo in a fast car says next to nothing about the relative performance of the two cars.

Perhaps, but my anecdotal evidence is my buddy's Z06 which he's driven on the track many many times with no issues, and then a regular Stingray that fire-balled in front of me on the track...

Archimedes

But even if that yahoo is a top level professional driver, the gaps are still pretty small. The lap times clearly show that.

Dewinator

Oh yeah totally. Normal sports cars are so insanely fast now that it takes a ton extra for just incremental increases in speed.

Cristophosphorus

It's almost like saying a 599 GTO owner would somehow be disappointed that an F12 is faster than their rare, collector's model that's the closest you can get to motorsport.


Also, you have a fabulous Porsche history/lineup. I envy you! So awesome.

Dewinator

This isn't really an accurate comparison, because the F12 is faster and better looking than then rare, collectors model 599 GTO so they each have their advantages.

The GT3RS in this case is the faster and better looking model in addition to being the rare collector's model so it's a win-win.

Nick

Take the same driver be it an amateur, guy like myself an average driver or a pro and put him/her in a 991.2 c2 at any track. Time their performance. On the same day, put the same driver in 991GT3RS and time him. I'll bet the RS will be faster regardless of the track. This approach will put to bed any perceived variations of driving conditions. AND that is the difference in the cars. Amateurs like ourselves will be faster in an RS.

The RS is far away a faster car and anyone that argues otherwise is delusional.

R_Rated

Or so insecure about buying the inferior .2 that they have to really reach to justify their purchase.

Next we will debate the drag times since that's the type of car porsche designed.

Stil_1

Well if we take the same driver, 991.1 got 7:37, he drove the GT3 7:25, I would expect he drives the RS faster than that. so a 12 second delta same driver.

Sport auto best time for 991.1 is 7:44, then 7:34 for 991.2, so a 10 second delta.

If we apply that delta to the above times, that is estimated 7:27 for the 991.2 if driven by Timo, which is still 2 seconds slower than a standard GT3. I don't think we seen a time driven by him for the RS. I see a 7:20 time for the RS, but I think that's estimated?

In either case, I still think they are different cars for different purposes. No doubt the RS is faster than the GT3, which is still faster than the 991.2. But the 991.2 is more comfortable to drive on a daily basis, is faster than the 991.1 as it should be.

Anyone who bought a 991.1, 991.2, GT3, GT3 RS and are happy with it bought the right car for them. Nothing anyone else says will dispute that.

Numbers on one track are only 1 factor in satisfaction. There's more than that to a car. For some it's sound/engine emotion, for some it's comfort, for some it's trackability, for others it's a well rounder.

We are at a point where for a 911 looking car +/ aero with models that cover a wide spectrum of factors, it's just pick and choose based on what you prioritize. No wrong choice. Enjoy your car for what you chose it for.