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GT2RS Clubsport vs 991.2 Cup Car

 
Old 07-11-2019, 01:13 PM
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Originally Posted by A/S View Post
This one is going to be closer, but it should go to the GT2RS ClubSport.
Mark Webber with a passenger crossed under the Pirelli bridge at Mount Panorama at 1:49.4 (the back straight). The 2016 qualifying record lap (by an FIA-GT3 McLaren) passes that bridge 4 secs before than Weber, but Weber was on press-day mode plus a passenger, while the 650S-GT3 was in full attack mode.


The FIA-GT3 car from Porsche is the GT3 Cup R, not the slower 991.2 GT3 Cup.

Road America favors big horsepower, and the last time, the GT2RS Street car was handicapped by the MPSC2 N2 tires. On the Cup2-R and driven by Dave Donohue, it went 2 secs faster, and not taking anything from Dave, but if I have to bet on a driver for a fast lap, my money will go to Sellers.

Here is some information:

991.1 GT3 Cup (Brian Sellers): 2:11.98 (Michelin Slicks)
991.2 GT2 RS (David Donohue): 2:15.17 (Cup2-R-N0)
991.2 GT2 RS (Brian Sellers): 2:17.04 (Cup2-N2)
991.2 GT3 RS (David Donohue): 2:18.57 (Cup2-R-N0)

The slicks would give a street GT2RS another 2 secs, placing it in the 2:13s. Now comes the big changes: The GT2RS-CS is not just a lighter GT2RS, it is also on a track suspension (not the compromised street/track suspension for the street car), and a massive Aero package. My guess is that on slicks, the GT2RS-CS will run a 2:09 at Road America, and I doubt the 991.2 GT3 Cup will touch under 2:10s.

Predicted laps (with Brian Sellers driving as awesome as he did last time):

GT2RS-CS: 2:09.18
991.2 GT3 Cup: 2:10.48
You are spot on in your analysis! My previous GT2RS had no setup and Bryan never had a chance to drive it prior to that event. When he cam out of the car, he mentioned to me that with a few more laps and a setup, the car was capable of a 2:15. I believe I actually stated that in the video after the laps.I agree with the lap times on the 991.2 Cup but really not sure about GT2RS CS.I believe it will carry 200 extra lbs with the turbos and PDK gearbox, which will make the difference in the back half of the track. Will be fun to watch and see a rare car driven at its limit.
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Old 07-11-2019, 04:42 PM
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A GT3R weighs a lot less and has a ton more sophisticated suspension...the 2RS club sport will be faster than the cup. Slicks, TCS etc type aids, and TORQUES.
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Old 07-11-2019, 05:43 PM
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Originally Posted by C.J. Ichiban View Post
A GT3R weighs a lot less and has a ton more sophisticated suspension...the 2RS club sport will be faster than the cup. Slicks, TCS etc type aids, and TORQUES.
I agree but it will be carrying quite a bit of extra weight which is not enough to slow it on the straights but may hurt it just enough on the long sweeping turn and kink to lose its advantage.
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Old 07-12-2019, 12:19 AM
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Look forward to see it in Boca Raton, happy to haul it to Sebring and back for you :-)
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Old 07-12-2019, 02:36 AM
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Know anyone with an RSR?
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Old 07-12-2019, 05:10 AM
  #21  
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Originally Posted by SDGT3
I agree but it will be carrying quite a bit of extra weight which is not enough to slow it on the straights but may hurt it just enough on the long sweeping turn and kink to lose its advantage.
the 935/GT2RSCS are ~

the GT3R is way faster than a cup car

the 935 and GT2RSCS are capable of SIMILAR times as a GT3R at tracks like Monza.

:: the clubsport is faster than the cup car
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Old 07-12-2019, 09:51 AM
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Does the GT3 R and RSR have the engine in the same spot? I know the Cup car has the more rearward position like the street cars do.
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Old 07-12-2019, 11:41 AM
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A bit academic but this is what folks with actual seat time can tell you:

GT3R > GT2RSCS >> GT3Cup

Over a two-minute lap the delta between a GT3R and the GT3Cup is 4-5 seconds (Sepang F1 or Shanghai F1), the R on SRO Blancpain GT3 BOP (Pirelli DH) and the GT3Cup spec Carrera Cup (Mich N2#)

The GT2RSCS is a Cup chassis with entry-level electronics and turbos. It doesn't have the trick electronics, aero or suspension or front tires of the R, and will in fact run identical Mich N2# rubber as the Cup. It slots neatly between those two bookends.

These REALLY are 3 racecars of completely different specs, use case and target audience.
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Old 07-15-2019, 11:06 AM
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Originally Posted by C.J. Ichiban View Post
the 935/GT2RSCS are ~

the GT3R is way faster than a cup car

the 935 and GT2RSCS are capable of SIMILAR times as a GT3R at tracks like Monza.

:: the clubsport is faster than the cup car
It would be great to have a GT3R to test. Anyone attending with one can have it as part of the event.
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Old 07-15-2019, 11:09 AM
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Originally Posted by CRex View Post
A bit academic but this is what folks with actual seat time can tell you:

GT3R > GT2RSCS >> GT3Cup

Over a two-minute lap the delta between a GT3R and the GT3Cup is 4-5 seconds (Sepang F1 or Shanghai F1), the R on SRO Blancpain GT3 BOP (Pirelli DH) and the GT3Cup spec Carrera Cup (Mich N2#)

The GT2RSCS is a Cup chassis with entry-level electronics and turbos. It doesn't have the trick electronics, aero or suspension or front tires of the R, and will in fact run identical Mich N2# rubber as the Cup. It slots neatly between those two bookends.

These REALLY are 3 racecars of completely different specs, use case and target audience.
Would tend to agree but CS has a lot more HP to help at Road America as evidenced by the street car maintaining a lead up until turn 5.
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Old 07-15-2019, 12:22 PM
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Originally Posted by CRex View Post
A bit academic but this is what folks with actual seat time can tell you:

GT3R > GT2RSCS >> GT3Cup

Over a two-minute lap the delta between a GT3R and the GT3Cup is 4-5 seconds (Sepang F1 or Shanghai F1), the R on SRO Blancpain GT3 BOP (Pirelli DH) and the GT3Cup spec Carrera Cup (Mich N2#)

The GT2RSCS is a Cup chassis with entry-level electronics and turbos. It doesn't have the trick electronics, aero or suspension or front tires of the R, and will in fact run identical Mich N2# rubber as the Cup. It slots neatly between those two bookends.

These REALLY are 3 racecars of completely different specs, use case and target audience.
thanks for the info. where does an RSR slot int?
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Old 07-15-2019, 12:55 PM
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Originally Posted by neurotic View Post
thanks for the info. where does an RSR slot int?
RSR > everything
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Old 07-15-2019, 01:32 PM
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Originally Posted by SDGT3 View Post
It would be great to have a GT3R to test. Anyone attending with one can have it as part of the event.
Well for reference, last year's fastest qual time in a GT3R at Road America with Pirelli slicks during the SRO weekend was a 2:05.0 by Factory Driver Michael Christensen.
Fastest lap was about 2 seconds slower.
The GT2RS CS could probably do 2:08.5's in my estimation if the track conditions permit.
But if you put a factory driver in the car and let him test and tune it all day, you could shave off another second on new slicks with low fuel load.

Here is the big point of the GT2RS......it's WAAAAAAAY EASIER for an AM to get a fast lap in the GT2RS CS than it is in the GT3R, hence why this car was built.
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Old 07-15-2019, 01:34 PM
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Originally Posted by ilovecarbs View Post
RSR > everything
Hahah noted.
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Old 07-15-2019, 04:32 PM
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Originally Posted by James-GMG View Post
Well for reference, last year's fastest qual time in a GT3R at Road America with Pirelli slicks during the SRO weekend was a 2:05.0 by Factory Driver Michael Christensen.
Fastest lap was about 2 seconds slower.
The GT2RS CS could probably do 2:08.5's in my estimation if the track conditions permit.
But if you put a factory driver in the car and let him test and tune it all day, you could shave off another second on new slicks with low fuel load.

Here is the big point of the GT2RS......it's WAAAAAAAY EASIER for an AM to get a fast lap in the GT2RS CS than it is in the GT3R, hence why this car was built.
And also much less expensive to operate given the PDK gearbox and street motor.
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