NASA TT Class for '09 Carrera
#16
Burning Brakes
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Strange the '08 & '09 models are not listed. Greg Greenbaum doesn't like Porsche's so that may be the reason. As a former Nasa TT/PT Director I would guess you're looking at TTS which requires a dyno.
That said I assume your heading to Infinion this weekend so go talk to John Lindsey and tell him Graber said to let you run this weekend.
That said I assume your heading to Infinion this weekend so go talk to John Lindsey and tell him Graber said to let you run this weekend.
#17
Wordsmith
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Strange the '08 & '09 models are not listed. Greg Greenbaum doesn't like Porsche's so that may be the reason. As a former Nasa TT/PT Director I would guess you're looking at TTS which requires a dyno.
That said I assume your heading to Infinion this weekend so go talk to John Lindsey and tell him Graber said to let you run this weekend.
That said I assume your heading to Infinion this weekend so go talk to John Lindsey and tell him Graber said to let you run this weekend.
Here's my (rookie) "math" :
2009 Porsche 911 Carrera 4S Cabrio w/PDK = 3516 lbs
3516 / 385 hp = 9.13
AWD = -0.5
weight adjust 3700 lb (with driver) = +0.55
=9.18 (TTA = 8.70:1)
Points adjustment:
RA1's = +5
+20mm (305's) = +4 (factory stock, but wider than the allowed 295's)
3rd muffler delete = +2 (not on the car yet, but thinking about tinkering)
GT2 rear sway = +2 (ditto ... not on the car yet, but something to play with)
total = +13
WIth 6 points to stay under 20 total points adjustment, the car can weigh as little as 3620 lb with driver.
At 9.18:1 and 13 points, I believe my car is in TTA.
Advice?
#18
Intermediate
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I'm think the Hp to weight ratio is based on rwhp. I'm assuming 385 is flywheel on the new cars. I certainly don't know that much about base classing cars for TT, but I just can't see the new Carrera S ending up in anything higher than TTA.
My 2 cents,
Hoosier R6s are the best 10 points you can take. Assuming there are three or more people in TTA, the contingency can make them cost effective.
My 2 cents,
Hoosier R6s are the best 10 points you can take. Assuming there are three or more people in TTA, the contingency can make them cost effective.
#19
Wordsmith
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I'm think the Hp to weight ratio is based on rwhp. I'm assuming 385 is flywheel on the new cars. I certainly don't know that much about base classing cars for TT, but I just can't see the new Carrera S ending up in anything higher than TTA.
My 2 cents,
Hoosier R6s are the best 10 points you can take. Assuming there are three or more people in TTA, the contingency can make them cost effective.
My 2 cents,
Hoosier R6s are the best 10 points you can take. Assuming there are three or more people in TTA, the contingency can make them cost effective.
I guess I could remove a nominal 10% driveline loss or say 35hp making it 350 rwhp.
2009 Porsche 911 Carrera 4S Cabrio w/PDK = 3516 lbs
3516 / 350 hp = 10.05
AWD = -0.5
weight adjust 3700 lb (with driver) = +0.55
=10.1 (TTA = 8.70:1)
Points adjustment:
RA1's = +5
+20mm (305's) = +4
3rd muffler delete = +2
GT2 rear sway = +2
total = +13
#20
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rwhp (to the ground) would make sense. That would change things and perhaps it could be tweaked to get into TTB, but I'd rather compare times with TTA where I think I'd have to work pretty hard.
I guess I could remove a nominal 10% driveline loss or say 35hp making it 350 rwhp.
2009 Porsche 911 Carrera 4S Cabrio w/PDK = 3516 lbs
3516 / 350 hp = 10.05
AWD = -0.5
weight adjust 3700 lb (with driver) = +0.55
=10.1 (TTA = 8.70:1)
Points adjustment:
RA1's = +5
+20mm (305's) = +4
3rd muffler delete = +2
GT2 rear sway = +2
total = +13
I guess I could remove a nominal 10% driveline loss or say 35hp making it 350 rwhp.
2009 Porsche 911 Carrera 4S Cabrio w/PDK = 3516 lbs
3516 / 350 hp = 10.05
AWD = -0.5
weight adjust 3700 lb (with driver) = +0.55
=10.1 (TTA = 8.70:1)
Points adjustment:
RA1's = +5
+20mm (305's) = +4
3rd muffler delete = +2
GT2 rear sway = +2
total = +13
![Wink](https://rennlist.com/forums/images/smilies/wink.gif)
By the way deleting the muffler is a lot of points for minimal weight loss.
Peter
#21
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haha.
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Actually a fully built GTS3 E36 wont be in PTB. I have to remove some stuff to make it legal
![Wink](https://rennlist.com/forums/images/smilies/wink.gif)
#22
Track Day
#23