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Board: Porsche - 911 - 996
Language: English
Region: Worldwide
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Re: "Tons" of GT3 Information and New Pictures!!!
Yes Thanks RC. There is really a ton of great information here. The car and its improvements in so many areas is stunning in my opinion. Thanks Porsche! What a great writeup too.
There are so many improvements, it is hard to pick just one to talk about. But brakes have been near and dear to me because I have struggled long with overheating brakes. So we have a 20 percent temperature improvement on a race lap at competition speed. This is a phenomenal result in my opinion. Even ceramic inserts to protect the fluid. My mouth is watering.
There are so many improvements, it is hard to pick just one to talk about. But brakes have been near and dear to me because I have struggled long with overheating brakes. So we have a 20 percent temperature improvement on a race lap at competition speed. This is a phenomenal result in my opinion. Even ceramic inserts to protect the fluid. My mouth is watering.
Re: "Tons" of GT3 Information and New Pictures!!!
Grant, I wish this would be the case, but it's close to impossible that 1372 kg could be the weight with driver and fuel, since the previous model stated 1350 kg unladen weight (without driver and fuel).1370 will probably be the dry weight of the car, which is more or less what I expected(+ 20 kgs), for an instant reading about lowering engine internal weight , lower rim weight etc. I hoped the new GT3 could be even lighter than the previous model.(not happening I guess...)
Re: Weight info
Here are weights, powers and ratios from my rennlist post:
Model, DIN kg, KW, DIN Kg/KW
Carrera Coupe, 1370, 235, 5.83
Carrera Cab, 1450, 235, 6.17
Carrera 4 Coupe, 1430, 235, 6.09
Carrera 4 Cab, 1510, 235, 6.43
Targa, 1440, 235, 6.13
Carrera 4S, 1470, 235, 6.26
GT3 (1st version), 1350, 265, 5.09
GT3 (2nd version), 1375, 280, 4.91
Turbo, 1540, 309, 4.98
GT2, 1420, 340, 4.18
These weights are DIN weights (with fluids, without driver and luggage). The GT3 (1st version) weight is from this Christophorus article. The GT3 (2nd version) weight is from a yet unpublished brochure on the new GT3. The other weights are from Porsche's web site.
The gas tank of the new GT3 (89 liters) is larger than that of the Coupe (64 liters), which accounts for roughly 20kg when comparing these two models. I estimate the USA GT3 version will be about 35kg heavier, due to the Sport seats (20kg), the air conditioner (10kg) and the radio and speakers (5kg).
The weight to power ratio of the new GT3 is slightly less than the Turbo. Also I believe it may be the first normally aspirated 911 with a ratio less than 5.
Model, DIN kg, KW, DIN Kg/KW
Carrera Coupe, 1370, 235, 5.83
Carrera Cab, 1450, 235, 6.17
Carrera 4 Coupe, 1430, 235, 6.09
Carrera 4 Cab, 1510, 235, 6.43
Targa, 1440, 235, 6.13
Carrera 4S, 1470, 235, 6.26
GT3 (1st version), 1350, 265, 5.09
GT3 (2nd version), 1375, 280, 4.91
Turbo, 1540, 309, 4.98
GT2, 1420, 340, 4.18
These weights are DIN weights (with fluids, without driver and luggage). The GT3 (1st version) weight is from this Christophorus article. The GT3 (2nd version) weight is from a yet unpublished brochure on the new GT3. The other weights are from Porsche's web site.
The gas tank of the new GT3 (89 liters) is larger than that of the Coupe (64 liters), which accounts for roughly 20kg when comparing these two models. I estimate the USA GT3 version will be about 35kg heavier, due to the Sport seats (20kg), the air conditioner (10kg) and the radio and speakers (5kg).
The weight to power ratio of the new GT3 is slightly less than the Turbo. Also I believe it may be the first normally aspirated 911 with a ratio less than 5.
Re: Weight info
MDS - I think you're being conservative about how much more the US version will weigh. For example, when I removed all of the air-con gear from my 73 911S, it weighed over 80lbs (36kg), including compressor, evaporator, lines, etc. Maybe the near stuff is lighter, but still much more than 10kg...
I wonder how much labor it takes to strip it out?
I wonder how much labor it takes to strip it out?
Re: Will this car outperform the TT? I know they are different
Nick - To make an analogy to a company your know well:
Why would anyone buy a Modena Challenge Stradale when it costs about the same as a 575 Maranello or 456?
One is a sports/racer and the other is a fast GT car - very different driving characteristics (and the cheaper Ferrari is faster than the more expensive ones)
Why would anyone buy a Modena Challenge Stradale when it costs about the same as a 575 Maranello or 456?
One is a sports/racer and the other is a fast GT car - very different driving characteristics (and the cheaper Ferrari is faster than the more expensive ones)
Re: Weight info
Grant, it will be hard to tell a difference in performance with only the A/C removed. For the cost in labor, it might make more sense to say spend the money installing a different set of transmission gears. Here are the max speeds in each gear for a new GT3 and a Cup car with factory gearing:
GT3: 46, 81, 112, 144, 170, 190 mph
Cup: 48, 75, 96, 114, 134, 161 mph
For autocross, there would be little difference. But for open track driving, the difference in performance would be large. In fact, I think you would see close to GT2 performance at higher speeds, assuming that the decrease in maximum speed is not an issue.
GT3: 46, 81, 112, 144, 170, 190 mph
Cup: 48, 75, 96, 114, 134, 161 mph
For autocross, there would be little difference. But for open track driving, the difference in performance would be large. In fact, I think you would see close to GT2 performance at higher speeds, assuming that the decrease in maximum speed is not an issue.
Steel Synchro Rings?
Does anyone know why just 3rd, 4th, and 5th gears would have steel synchros? Is it because 1st, 2nd, and 6th were already steel in the previous GT3 and they're just announcing the changes, or is there a good reason to have brass 1st, 2nd, and 6th for ease of shifting?
Thanks!
Thanks!
Re: Weight info
Are you sure the gears are that low? I thought 3rd gear was good for a bit over 100mph. And I know that top speed is 177, but it's not redline-limited there, that's drag limited, so 177 happens at the power peak (6,800), I think. Anyways, I guess the C2 is geared lower than the GT3 if that's close - have to compensate for differing redlines though...
Thanks
Thanks
Re: Weight info
I guess that means that the GT3 and C2 have very similar ratios (speeds for GT3 are higher because of higher redline). So, I think you're right to suggest Cup car or other lower gears for the track. Given the fairly modest torque and hefty weight, lower gearing is the best cure and only ovals need top speed 
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