How much performance is lost in the GT3T?
11-01-2017, 12:51 AM
#46
Burning Brakes
11-01-2017, 02:46 AM
#47
.....without the wing? Obviously on a track the wing will help and balance the whole package, but how about for street use? Do the lack of the air scoops under the wing mean less air at speed to the 'Touring' engine? I would think, as with the R that Porsche has tried to make the package as good as possible. Has anyone done an analysis or does Porsche have any comment on this? I wonder how much slower the GT3T would be around the Nurburgring.
Unfortunately my licence ran out and it's pricey to renew, so I'll hazard an educated guess based on previous experience: ~6 seconds on the 'ring, roughly half from the manual shift and the other half from aero. There are a few fast sweepers that the regular GT3 will take flat where the T would need to lift, and those will account for nearly the entire time difference. That's assuming a pro driver. With an average driver both the GT3 and T would get slower, but the T more so.
On the street below 100 mph I'd expect virtually zero performance difference, manual vs pdk excluded. On some autocross courses I'd expect the T to match or even exceed a regular GT3/ PDK, though on average the PDK will be slightly (less than .2 seconds) ahead largely due to the shorter 2nd.
11-01-2017, 03:10 AM
#48
Three Wheelin'
The real question is will the new GT3 Cab in PDK be faster than the GT3 T around the Nurburgring? Will the structural rigidity offset the transmission advantage? 🎃
11-01-2017, 09:57 AM
#49
Rennlist Member
11-01-2017, 02:46 PM
#50
Instructor
I do not think that the ram air effect yields that much. Why: The German carmagazine "sportauto" has tested the .2 GT3. As a standard part of their "Supertest" they send the car to measure its performance on a dyno. The performance measure is static, so there is no wind, no drag and accordingly no ram effect. Nevertheless, the car delivered 500HP, as stated by Porsche.
Here is a link to the article, unfortunately without the test protocol:
https://www.auto-motor-und-sport.de/...-12396530.html
11-01-2017, 03:03 PM
#51
I do not think that the ram air effect yields that much. Why: The German carmagazine "sportauto" has tested the .2 GT3. As a standard part of their "Supertest" they send the car to measure its performance on a dyno. The performance measure is static, so there is no wind, no drag and accordingly no ram effect. Nevertheless, the car delivered 500HP, as stated by Porsche.
Here is a link to the article, unfortunately without the test protocol:
https://www.auto-motor-und-sport.de/...-12396530.html
Here is a link to the article, unfortunately without the test protocol:
https://www.auto-motor-und-sport.de/...-12396530.html
11-02-2017, 12:10 AM
#52
Burning Brakes
Originally Posted by WenigerAberBeser
I took it as, in addition to the 500hp claimed by Porsche, the ram air increases hp once you are at high enough speeds. By how much HP, depends on your speed, but I assume it could push out 10-20 hp more, maybe more, so 510-520 HP at speed.
11-03-2018, 01:06 PM
#53
Honestly if almost anyone on this forum would be able to tell the difference, or provide data showing difference in speed lap to lap on a regular length track...I'd be pretty surprised. If you're running at the top of class in PCA clubracing and or run in a series and are able to drive a 911 at a legitimate 10/10ths...maybe (so I guess there are a few of you guys), but honestly go with the one you like the aesthetic of if you're sold on manual.
11-03-2018, 04:52 PM
#54
Race Director
If your real name is Lewis Hamilton it will probably be noticeable on track. Otherwise i doubt you will notice any difference.
11-03-2018, 05:24 PM
#55
11-03-2018, 08:26 PM
#56
11-03-2018, 08:48 PM
#57
Racer
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I have driven a gt4 and own a gt3T. Stiffness wise I think they’re really close. For some reason, maybe the Alcantara the gt4 seems “racier”. The gt3T is MUCH faster.
11-03-2018, 09:33 PM
#58
I have Dundon Race headers on my GT3T. The car feels significantly faster vs stock. Just over 1000 miles on the car now. Already did an oil change. The Michelin tires do their job (most of the time), but cannot maintain traction during part of 1st gear and also when hooking into 2nd gear (slight wheel spin into 2nd gear). The car is surprisingly fast with these headers if driven properly. Sounds too damn good. Very hard to drive in a civilized manner because it makes you wanna go full throttle everywhere. I’ll be doing a dyno next week just for fun. Now I gotta see where I can find a good tire deal. Gonna start buying 3-5 sets at a time...
11-03-2018, 10:46 PM
#59
Rennlist Member
I just tracked my touring this week and I can tell you the lack of a rear wing is noticeable. The downforce is much less, I think it makes it fun for road driving but at the track I missed the wing for sure.
11-04-2018, 04:54 AM
#60
Originally Posted by GT3
I have Dundon Race headers on my GT3T. The car feels significantly faster vs stock. Just over 1000 miles on the car now. Already did an oil change. The Michelin tires do their job (most of the time), but cannot maintain traction during part of 1st gear and also when hooking into 2nd gear (slight wheel spin into 2nd gear). The car is surprisingly fast with these headers if driven properly. Sounds too damn good. Very hard to drive in a civilized manner because it makes you wanna go full throttle everywhere. I’ll be doing a dyno next week just for fun. Now I gotta see where I can find a good tire deal. Gonna start buying 3-5 sets at a time...
