996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

60-130 MPH: A Better Performance Measurement Than The 1/4 Mile ET

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Old Apr 4, 2006 | 06:58 PM
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60-130 MPH: A Better Performance Measurement Than The 1/4 Mile ET

In anticipation of the AX22 group purchase ( https://www.6speedonline.com/forums/...ad.php?t=45678 ), and the forthcoming ability of many 6Speed members to measure a panoply of performance data, I thought I would start a new thread regarding a commonly discussed performance measurement: 60 to 130 mph.

While ¼ mile times and trap speeds are often the focal point of performance comparisons, these figures are dependant on several variables which can dramatically affect the results, such that the times do not necessarily provide an accurate reflection of the power and performance of the particular car. For example, someone who is skilled at launching a car from a dead stop can achieve far better ¼ times then someone driving the same car who does not have the same launching skills (or who does not want to tax his clutch, transmission and driveline). I suspect that this variable alone can result in over a full second difference in times for the same car. Likewise, tires play a tremendous role in ¼ mile times. A car equipped with DRs will be considerably faster than the same car equipped with PS2s -- again, this variable alone might account for a ½-1 second or more difference in ¼ mile ETs. Track conditions and preparation can also dramatically affect ¼ mile ETs. Finally, altitude and climate variables have a tremendous impact on times (this variable, of course, applies equally to non-1/4 mile times).

As mentioned above, ¼ mile racing has the added disadvantage of putting a tremendous strain on the clutch, transmission and driveline of the car. The recent ¼ mile event in Arizona is a prime example of this -- several cars failed because of the increased stresses involved in running a ¼ mile.

Moreover, as evidenced by the thread recently started by RenntechV12 ( https://www.6speedonline.com/forums/...ad.php?t=46061 ), 996TTs are notoriously poor performers in ¼ mile tests for a variety of reasons, including the suspension dynamics and geometry, AWD wheel hop, bogging, wheel size, gearing, etc etc. Therefore, the true power and capability of a 996TT is often not revealed in a ¼ mile ET.

Based on the foregoing, I will echo the sentiments previously shared by others here on 6Speed ( https://www.6speedonline.com/forums/...threadid=19402 ) that a 60–130 mph measurement is a better indicator of the true power and performance of the 996TT. A 60-130 mph measurement removes most of the variables associated with ¼ mile runs (e.g., launch skills, tires, track prep, etc). Additionally, 60-130 mph sprints are far less taxing on the clutch, transmission and driveline. Finally, AWD wheel hop and bogging obstacles are eliminated.

The 60-130 mph sprint is a much purer benchmark, which places less emphasis on driver skills and more emphasis on the pure power of the car (climate and altitude differences being the most significant remaining variable).

Now that several 996TT members are purchasing AX22s ( https://www.6speedonline.com/forums/...ad.php?t=45678 ), we should be able to measure 60-130 times for many different 996TTs. The results should be illuminating.

As a point of reference, I have collected 60-130 times for several high performance production cars (Car and Driver being the sole source of data):

Lamborghini Murciélago: 12.1 seconds (this number seems too high)
http://www.caranddriver.com/roadtest...ago-page3.html

MB SL65: 9.6 seconds
http://www.caranddriver.com/shortroa...amg-page2.html

Ferrari F430: 9.5 seconds
http://www.caranddriver.com/roadtest...430-page4.html

Viper SRT Coupe: 9.2 seconds
http://www.caranddriver.com/roadtest...upe-page3.html

Corvette C6ZO6: 9.2 seconds
http://www.caranddriver.com/roadtest...z06-page4.html

Porsche Carrera GT: 7.3 seconds
http://www.caranddriver.com/roadtest...-gt-page3.html

Ferrari Enzo: 7.0 seconds
http://www.caranddriver.com/roadtest...nzo-page3.html

Saleen S7 TT: 6.1 seconds
http://www.caranddriver.com/roadtest...rbo-page3.html

From the data I have gathered, anything in the 7 second range is very fast, anything in the 6 second range is incredibly fast, and anything below 6 seconds is speed of light fast.

Should be interesting to see where modified 996TTs fall on this continuum.

Craig
 
Old Apr 4, 2006 | 07:34 PM
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Hmmmmm...deja vu per PM


Im game to play with all the toys!
 

Last edited by VRAlexander; Apr 4, 2006 at 07:36 PM.
Old Apr 4, 2006 | 07:50 PM
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Hmmm the Saleen ran 2x as fast as the Murc???
 
Old Apr 4, 2006 | 07:54 PM
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Originally Posted by vincentdds
Hmmm the Saleen ran 2x as fast as the Murc???
Thats why I observed that the Murci time seems high. I would have placed a Murci in the mid to low 9s.

It will be interesting to see what your TT Viper does. 5.x??? Be sure to post those times as well.

Craig
 
Old Apr 4, 2006 | 08:09 PM
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Originally Posted by VRAlexander
Hmmmmm...deja vu per PM


Im game to play with all the toys!
Um, yes. I started the 60-130 test a while back and it's quickly become a standard on several other forums. It's never been a big hit on this forum where bigger HP and drag-starts seem to be the preferred comparison method. However, for typical US street and track encounters, it's still the best and most accurate way to compare cars, especially now that the AX22 was invented. You just need to let everyone know:

1. What gear you started in.
2. Was the road perfectly level?
3. Number of passengers in the car.
4. Temperature, humidity and altitude, if known.
5. Gas octane.

Everything else is really irrelevant, except your shift speed, which we can see in the AX22 graphs.
 
Old Apr 4, 2006 | 08:22 PM
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Thats what im talking about! I like the 40-130mph test also.

However i dont think going on R&D and subtracting the 0-130mph from the 0-60mph would give a correct 60-130mph time reading. Its less accurate this way and you are already at speed passing the 60mph mark. Also the level of the road is a major factor.

My car does 60-130 on a level road in 8.8 seconds. Pretty fast for a little M3!
 
Old Apr 4, 2006 | 08:23 PM
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Gonna have to see what the gto does, intriquing idea
 
Old Apr 4, 2006 | 08:42 PM
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Originally Posted by Bill S.
Um, yes. I started the 60-130 test a while back
I gave you credit Bill, and even linked to your original thread:

"Based on the foregoing, I will echo the sentiments previously shared by others here on 6Speed ( https://www.6speedonline.com/forums/s...threadid=19402 ) that a 60–130 mph measurement is a better indicator of the true power and performance of the 996TT."

I am merely following up on what you started!!!

Craig
 
Old Apr 4, 2006 | 08:44 PM
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I timed a video of a EVO stage 4 501rwhp, it was 60(already WOT before)130mph in 8.2 seconds.
 
Old Apr 4, 2006 | 08:49 PM
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Originally Posted by Craig
Thats why I observed that the Murci time seems high. I would have placed a Murci in the mid to low 9s.

It will be interesting to see what your TT Viper does. 5.x??? Be sure to post those times as well.

Craig

Oh yeah that's what I am buying the AX22 for Since I don't do drag racing.
 
Old Apr 4, 2006 | 08:49 PM
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Originally Posted by SCM3
However i dont think going on R&D and subtracting the 0-130mph from the 0-60mph would give a correct 60-130mph time reading. Its less accurate this way and you are already at speed passing the 60mph mark.
When measuring 60 to 130 times, one does not inch up to 60 mph, then go WOT at exactly 60 mph. Rather, one goes WOT prior to 60 mph (e.g., at 45 or 50 mph), so that they are full throttle and full boost when they pass 60 mph. Therefore, subtracting the 0-60 time from the 0-130 time should yield a reasonably accurate 60-130 time (because both involve the same 0-60 time).

Craig
 
Old Apr 4, 2006 | 08:56 PM
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Originally Posted by Bill S.
Um, yes. I started the 60-130 test a while back and it's quickly become a standard on several other forums. It's never been a big hit on this forum where bigger HP and drag-starts seem to be the preferred comparison method. However, for typical US street and track encounters, it's still the best and most accurate way to compare cars, especially now that the AX22 was invented. You just need to let everyone know:

1. What gear you started in.
2. Was the road perfectly level?
3. Number of passengers in the car.
4. Temperature, humidity and altitude, if known.
5. Gas octane.

Everything else is really irrelevant, except your shift speed, which we can see in the AX22 graphs.

Tires and PSM are also a factor
 
Old Apr 4, 2006 | 09:11 PM
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Originally Posted by Craig
When measuring 60 to 130 times, one does not inch up to 60 mph, then go WOT at exactly 60 mph. Rather, one goes WOT prior to 60 mph (e.g., at 45 or 50 mph), so that they are full throttle and full boost when they pass 60 mph. Therefore, subtracting the 0-60 time from the 0-130 time should yield a reasonably accurate 60-130 time (because both involve the same 0-60 time).

Craig
Then why not call it 45-130 mph? I think 60 - 130 mph should start from 60 not before. WOT before 60 will make a big difference in 60-120 mph times rather then starting WOT at 60 mph. You know races happen with cars at the same speed, usually they tell each other 40 or 60 mph start. Either way the 60 -130 mph time records should include if it was WOT before 60 or starting from 60.
 
Old Apr 4, 2006 | 09:16 PM
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I don't know too much about any of this stuff, except that my stage 2 TT is really fast. A zero mph launch just doesn't interest me any more, so I think Craig's comments are very appropriate for Porsche TT's.

I’m sure most everyone here knows more about these cars than I do, but, IMO, these cars were never designed for a quarter mile run.

Their sterling performance characteristics where designed for a different arena.
 
Old Apr 4, 2006 | 09:20 PM
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Great point!!!

This type of test eliminates all of the other X factors as discussed previously. I made a video of my GT700 doing a similiar run:
http://www.scottsdaleexoticcarclub.c...T700video.html

In these types of runs, all but the mightiest of super cars will fall to the modded 996TTs.
 


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