I'm reffering to whoever posted that there was no way the FGT was racing or on the gas at the same time, didnt mention any name because I didnt go back to look, if the shoe fits ...... I had my doubts too when I saw the first vid, but since he said more vids were coming I just kept my mouth shut and I do beleive after seeing the second goup of vids.

The is obviously a drivers race, a roll on race on the highway is always going to favor one of the cars gearing at the start, and inb this case the starting speed favors the Turbo, if the GT could be in a lower gear then maybe something would change and it could keep up on the start but as far as pulling they looked pretty even to me other than the mis shift.

 

Sounds great Peter. PM Jeff (The Punisher) and he should be able to help you out with that. We had a 6speed meet in Vegas and although many of us drove our cars there, unfortunately, there were no car events (Just social/gambling/drinking which was fun as well). There is a thread here where we are discussing having it possibly in Dallas next year and have some real car events as well.
https://www.6speedonline.com/forums/...ht=6speed+meet

 

Yeah the 996 Turbo is amazing in it's throttle response, I have hit powerband before a friend in his C6Z multiple times. I dont have an explanation but for it to hit before an NA car is pretty darn fast.






What does positively displaced mean? I have raced a lightly modded S55 that ran a 12.4 at 116 with PS2's on it, a 450 rwhp Mach 1, 500+ rwhp Cobra and while all these were in my E39 M5 I always hit the powerband first (even thought I lost) and by a good margin and my turbo is just as fast on the power, pretty instant.


In fact when I race my 775 RWHP Vette, it's vey hard to keep the launch even because I have rear mounted Turbos on it and very low compresion so it has some lag, but my turbo doesnt have much of that at all. I havent driven a FGT or Twin Screw if that's what positive displacement means but you have to drive both to eliminate the possibility of the Turbo getting to powerbad first.

 

Luis, thanks for the advice, I already posted in the thread you linked and will PM jeff.
Peter

 

2. There are two types of supercharger and the first, a centrifugal supercharger, is an air pump driven directly from the crank, injecting air it has ALREADY compressed. It delivers exponentially increasing boost as rpm increases.
Some like to think of the centrifugal supercharger and the turbocharger as the same thing except with the compressor wheel turned by different means. The centrifugal does experience lag at the lower end also. [also see the Centrifugal Superchargers page]
Or you could have split it between compressors and (positive displacement) non-compressors.

3. Of the two types of supercharger the second, commonly called a Roots blower, is a positive displacement air pump driven directly from the crank, injecting air it has NOT compressed. It delivers linearly increasing boost as rpm increases.
The great difference of the roots type blower is that it produces high boost at low end rpm, with no significant lag. [also see our Roots Superchargers page]
But now you have to split it between NON-positive displacement compressors, positive displacement NON-compressors, and the twin screw positive displacement compressor.

4. The twin-screw supercharger is a positive displacement air pump driven directly from the crank, injecting air it has ALREADY compressed. It delivers linearly increasing boost as rpm increases. The twin screw delivers full boost at low rpm, like the Roots, but also delivers compressed air, like the centrifugal and the turbo.
[also see our Twin Screw Superchargers page]


BTW, it's impossible for a turbo to get to it's powerband first, a PD blower is always in it's power band.

here is the dyno sheet from my gt500 and a twin screw gt500...notice that the second the car is spun on the dyno at 2000rpm, it's making 500+ ft lbs of torque, meaning it's always in it's power band.

 

Joes car should be able to hang with him. Speaking from experience had one till about 100 -120 very strong but NOT A ROLL ON CAR!!! I have had my *** handed to me by alike toys it doesn't have the up stairs even with the blower! I had a kenne bell on mine dyno'ed about 760 whp. When I had my car in one piece Supra's, vipers and other alike things from 60-80 mph I would hang with if not pull away. All of them had atleast 100 whp more!! Where I would get into trouble was 6th not enough steam

 

thats becasue the gt28s hybrids just dont have it up there... a little too small for those Supras....

 

I might be in for that. Can we see the Cowboys play too?

 

Yeah I know mark thus the boom

 

Yes, when I had my GT700 it ran out of steam at 4800 when being dynoed. But from a standstill to 4800 it felt like a big block chevy!!! I think this setup is preferable for most because of the lack of lag; however, when doing street racing you just start loosing acceleration around 110 to 120... which means you will loose.

Cheers, Robert

 

I think if you are serious with a meet in Dallas, please let me know and I will help set it up through Houston or Dallas Performance Driving organization. There are couple of people that I know who are very interested in show casing Porsches at these local events. For example, we could meet during the Texas Jam or during Houston vs Dallas shoot out! During these events, there are a myriad of fast cars, free dynos and tons of goodies to be given out.

Sincerely Robert

 

Watch the video again. We went to 150.

I didn't "loose"...I think you meant to say lose.

 

What the hell are you talking about? Here's my dyno sheet from my 1st GT700 kit on my 996tt.



How do you figure that the power "falls off" after 4800? That's when the HP takes over from the torque.

Don't turn this thread into an EVOMS/GT700 bash fest.

 

I was not referring to your car or your race but in general terms about the GT 700 Kit which utilizes GT28/60. This is a great kit; however, in Texas we have some really fast cars that just outpaced my GT 700. It seemed like my acceration would fall off slightly when compared to some highly tune small blocks or supras. If I did not enjoy street racing, I would not have changed my EVOMS GT 700 kit. I hope this clarifies my statement, additionaly that is a great video!

Fraternally, Robert

 

I enjoy street racing with my GT2 GT700 I've had around 100 races with 2 and 4 wheel vehicles and I have only lost twice, both were to TT Vipers that made over 1200RWHP. We usually go from 60 to around 150 my "little turbos that run out of steam over 110" have served me very well.