Silverbullet951

I'm gonna have to try this out again. I think I remember a 5.7 60-100 when I tried it a year ago.

mark kibort

[if this is so, then your 0-60 itime cant be over 4 seconds, making 0-100mph in the 8.5 second range. better than the Carrera GT at 550hp

mk


QUOTE]Originally posted by Mark Szalaiy
60- 100 mph 4.538 [/QUOTE]

mark kibort

[0-60 is pretty easy to get a ball park from these 12second range 1/4 times you all are running. however, if you are going to get an accurate 60-100 time, roll into it from 55mph, and use a stop watch or video your spedo up close, or even do a car phone call out of times from 60 to 100mph.

no way you are ever going to get 5.5 0-60 and back that up with a 3.8second 60-100. (unless you have no grip and have 550hp for the 60-100mph runs)

ive been doing these tests for quite sometime, and my car is lighter as well. at 2700lbs and 335 rear wheel hp(400 flywheel) im in the 5.6 second range for 60-100) do the math. HP to weight constant, 3rd gear, hitting just about redline at the end of the 100mph run.

also, look at road and track results for 0-100mph times and subtract out the 0-60 portion. ive never been surprised by their results,and they are certainly right on the money for a stock 928S4 of about 7 seconds at 3500lbs and 315flywheel hp.

anyone that has a sub 5 second 60-100 time, call me up on the cell and leave the 60-100 time by calling out the speeds on my machine. Ill time it. No cheating guys!! 408 823 3731

mk



QUOTE]Originally posted by rage2
OK Mark answered my question from the other thread .

I actually used a G-Tech Pro Comp on my car to compare as well. At the track I was doing 12.7@117mph, on the G-Tech Pro I was doing 11.6@130mph. 0-60 was 4s flat. In real life, I rarely see a 0-60 time of under 5.5s on my car. The problem was the rear dives a lot which messes up the readings, especially in the lower gears. On my AMG it was much more accurate, suspension is stiffer in that car, less rear dive. This problem plagues both the G-Tech Pro and the G-Tech Pro Competition. I actually lost a $100 bet with my 944 at the drag strip because of the G-Tech Pro. I was confident of making 120mph trap speeds, which never happened.

As for how I did my 0-60, 0-100, 60-100 time, I took an in car video of the speedometer during my drag run and did a frame by frame to calculate 0-60, 0-100, then subtracted the 2 to get 60-100.

0-60: 5.33s
0-100: 9.13s
60-100: 3.8s

It may be off by a frame or 2, which is about 0.03s per frame, so my numbers should be within 0.1s of actual times. [/QUOTE]

Peckster

I don't bother, even on a track, But I understand how it's done. But it's still not as fast as running through that bracket from a lower speed. You can't compare these times without specifying if they're roll-ons, brake boosted or not.

Unless everyone's assuming you're hitting 60 from a lower speed with your foot already on the floor. Is everyone?

rage2

I lower boost in 1st and 2nd for traction reasons, since I run street tires. 17psi in 1st, 22psi in 2nd, 28psi in 3rd, 4th and 5th.
My car makes nearly 460whp, and weighs in at 2940lbs + 200lb driver. Here's a video of me doing a drag run 3 times, with a good view of the speedometer, clearly showing sub 4 second 60-100mph times.

http://www.virgeweb.com/rage2/944t/2...1-12.7@117.wmv

If you want the full quality MPEG2 version of the clip to perform a frame by frame analysis, let me know .

mark kibort

I see!!!!! 460 rear wheel hp. thats just not fair!!!!!!

Yes, I also agree. we all should make this test with a substantial roll on. whatever it takes to take as many variables out of the equation. no shifts if you can get away with it too. and, hopefully, its 3rd gear for all and we all finish just around redline.

The nice thing about that 60-100 mph test is that it takes the driver skill and traction out of the equation, as well as spool up time too.

shouldnt you be running 10-11s in the quarter with that kind of power?? (just curious, as im not versed in the variables in drag racing, however, some pretty amazing cars run 11s)

mk

mark kibort

just saw the clip. wow, not much time to shift is there?
looks like the shift from 2-3rd is the 60mph mark and 3-4th is just over 100mph, right? yep, under 4 seconds.

I need some boost!!
MK

special tool

Look Toto, we're not in the 928 forum anymore...

Nobody was stealing Rage's lunch money with a 2.5, chief

BoostGuy951

LOL

rage2

Yea, should be. Too bad drivetrain parts are so fragile and expensive. I lower boost and take it easy in 1st and 2nd, I don't powershift 1-2 so there's quite a bit of boost lost between those shifts, and lose out probably close to a second in ET and a few mph's down the 1/4 mile.
60mph is somewhere in the 2-3 shift, maybe at the shift point, that's why I quoted 2 times, one before and one after shift. 100mph is right before the 3-4 shift.

If I rolled from 3rd gear, I could probably clock a 3.0s flat 60-100mph run because there's a small lost in boost after the 2-3 shift. I also did this run at 3700ft elevation... if I did this at sea level... and had the injectors for it... sub 3 second 60-100mph. Ahh, the beauty of bench racing .

mark kibort

So, was your rear wheel hp run 460 at the wheels adjusted for altitude, or was it an actual run. (meanng at sea level, it could be 15% higher!!)

The run is obviously actual. man, looks like you are pulling a water skier the way your nose is bouncing. Im sure you need that kind of action to keep grip.

someone should run the numbers, but I would bet 3 seconds from 60-100mph and 3200lbs would require about 600hp.

I got to bolt on a turbo or a supercharger!!

Mk

jimbo1111

Nice vid Rage. Thats some pretty good shifting too. I've done the 60 mph to 100 mph in 5.1 with 322 rwhp 18 lbs pump gas and two people in the car. I also raced a 02 or 03 996 C4 from 60 to 140 and pulled about 5 car lengths on him. Dose anybody know what the 60 to 100 is on a C4?

rage2

460whp was adjusted for altitude, so at sea level it'd be really 460whp. BTW - the video clip that you saw were my earlier runs before the battery died on the camcorder. Those runs were ~25psi and running 13.0@115mph. I cranked up the boost to about 28psi later on to clock my 12.7@117mph, which would've shaved a bit of time on the 60-100. Too bad I don't have that on video...

Koda

I don't think a lot of you guys are doing the test correctly... The proper procedure is to cruise under 60mph and stand on it, YOU WANT TO HAVE FULL BOOST BEFORE YOU HIT 60MPH, the at 60MPH start the clock, stop it at 100. For further details check out PCA's Up-Fixin-Der-Porsche. From my recollection at dead stock 86 turbo should run the test in about 6.1-6.3 seconds...a TurboS is faster at but I don't recall the time, and can't look it up here but this is really how the test should be done. My stock 86 ran it at 6.2sec.

Good Luck

Koda

Koda

Oh I forgot to mention it is all done in 3rd gear...NO SHIFTING