Rickard 993 Turbo

Do you mean a rolling road ..?

Rickard 993 Turbo

Yes in your car the Mustang dyno and the trap speed seams to go hand in hand..And the mustang seams more right than the dynojet

NAO

yes

Rickard 993 Turbo

I did get a little unsure what you meant...Im from sweden and sometime it
s hard to explain what i mean

Stummel

Kevin, unfortunately I do not have quarter mile tests at hand.
Only the stock 997 tt with 11.7s, trap not known.

I try to gather some data of tuner cars.

9Eleven

OK here is the 64k question. My car trapped 127.6 on KPG's racelogic. Kevin indicated that it is very accurate. If my car weighed 3400 or so pounds (give or take 10 or 20 pounds), what is the hp at the crank? Here is a European tuned 600 bhp turbo that weighs the same as my car and ran 0-60 in 3.9, 0-100 in 8.0 and 0-125 in 12.0. My car ran 0-125 in 11.6. Here is the article, it's the one dated 9/1999.

http://www.t-t-p.de/english/berichte.php#

Rickard 993 Turbo

Or you have the most powerful Gt2 in the world... i will soon have a simular setup as you and i only going to have 530hp at max..

TB993tt

Just as elsewhere, not all European tuners quote real Porsche hp - TTP doesn't use engine dyno for his ratings, for example his 600hp rated 993tt performed like a Porsche 520hp.
This is where the 60-130mph test is invaluable, this is a great indicator - your times with the 1 shift put you right where you should be in the ~520 Porsche hp bracket.

Here is a question, what hp does a 2WD 993tt running at 1485kg in 55DegF have if it manages a 2 gearchange (stock gearbox) 60-130mph in 6.9s ?

Stummel

Sorry 9Eleven, but TTP is one of the least respected tuners in Germany and his hp ratings are known to be very inflated. The 600hp 993tt from ttp has about 520hp.
It is 4wd so you can not compare the engine hp to your 2wd. (See Kevins 4wd car)

Here www.einszweidrei.de/porsche/rst993t1997-1.htm you can see a similar car from RS-tuning with 533hp. It makes 0-200kph in 10.7s and is 1.7s!!! faster than the 600hp ttp car. (yes it has huge aerodynamic advantages, but still 1.7s with 70hp less is a lot)

Stummel

if the car is blue and has a very faaaat a$$ it seems to have quite some hp

9Eleven

I still believe that 0-100 or 125 or whatever requires a fairly good launch. Trap speed does not. The fact remains it trapped 127.6. Honestly, I'm not trying to inflate my cars numbers. I'm just doing it for the sake of discussion and knowledge. How do we really determine a cars actual hp? How do we measure it? How can we use this when we modify our cars to determine any gain? That's what my goal is and has always been. It's not about me or my car. I'm looking for answers.

TB993tt

You have to start with the engines which are rated to Porsche standards, built and tuned using the protocols and equipment which Porsche use - these are obviously stock Porsche models, RS Tuning, Rufs ratings, and a very few others.

Next study the 100-200kph or 60-130mph numbers for these cars taking into account 2WD/4WD, weight, temperature, number of gearshifts.

Look at enough of the verified data and it becomes quite easy to make a very close estimate of the Porsche hp rating.

If you car does 60-130mph with two changes in 8.8s weighing 1550kg/3400lbs and mine does it in 6.9s weighing 1485kg/3274lbs then if your car has 550hp, just how much more do you think my car has to shave nearly 2 seconds off the sprint ?

Rickard 993 Turbo

The only trues is the Engien dyno

9Eleven

My car ran a 2 shift 60-130 in 8.42. Your car weighs 125 to a 140 lbs less than mine.

9Eleven

Wrong. I guess that is where we differ over here. Trap speeds are indisputable. It must be a U.S./European thing. E.T. can differ, so can engine dyno's, but trap speeds stay consistent, run after run after run.