Anyone who has run at Bitburg knows how bad the track is. Prep of the track includes opening the gate and letting the cars run down the track. Elevation is 1,223ft. And the track increases 10ft from the beginning of the track to the end. So this brings knew meaning to racing up hill.

Brians 12.742@108.42mph run at Bitburg. 24psi on his Hahn 20g turbo makes the car move out.

http://www.youtube.com/watch?v=Vy3n9C_ynb0


Brians 12.858@107.39mph run at Bitburg. Dam him and his 1.96 60 foot.

http://www.youtube.com/watch?v=n7a0wwylDx0


Brians 12.868@107.64mph run at Bitburg. Not sure on his 60 foot here.

http://www.youtube.com/watch?v=vuqtdLFYpf8


Every wondered what would happen with a 1000hp Porsche 9ff running down the Bitburg Motorpark. The answer would be no traction at all. Watch.

http://www.youtube.com/watch?v=TpVo9CN4nS0

http://www.youtube.com/watch?v=VW6EGPqheJM


Here is a Techart Porsche 997 Turbo making a run down the track but still got beat by what appears to be an old Audi 80 Quattro

http://www.youtube.com/watch?v=dkv5-MXp664


Another couple of runs by the Techart Porsche 997 Turbo.

http://www.youtube.com/watch?v=q9OaWtoq_3o

http://www.youtube.com/watch?v=iqOQzLPBYn8

 

My time is below dont have a video of the 12 I ran. But I didnt get a good 60foot which hurt my 1/4 mile time bad. I put up Chad's Cobra GT500 with a stage 2 kit and 3.73 gear time next to mine because you can see what I could have ran if my 60 foot was better because we did the same 1/8mph and 1/4mph. I did this with on 21psi on the turbo. Slicks were at 15psi. The slicks had to much psi should have been down more around 12psi.

Mine
60 foot - 2.123
1/8 ET - 8.583
1/8 MPH - 91.09
1/4 ET - 12.987
1/4 MPH - 112.22

Cobra GT500
60 foot - 1.852
1/8 ET - 8.186
1/8 MPH - 90.18
1/4 ET - 12.572
1/4 MPH - 113.35

 

to lose .271 60ft on wheel spin is hard to bite.

We're laying 750+- HP on 32x14.5 slicks and for us, a tire spin is maybe 0.04 60 ft. IE our best pass friday was a 1.25 60ft first pair after the pro-mods (with 8.25psi), and our worst pass (with 7.25psi after street cars) was a 1.29 60ft. Maybe a street car reacts differently to tire spin, but i would think with less power, you would be able to recover quicker.

You were
60- 0.271
660- 0.402
1320- 0.415

What were both of your RT's, 330's and 1000's?

I'm not doubting that you could have stayed up on him if you hadn't blown the tires off, but just seems to me that .4 would be alot to gain. You actually were gaining on him, because normally a .2 difference at 60 is pretty substantial at top end.

 

The slicks I am running are M&H 24.5/8.5/15 at 15psi. But here are the times you asked below. Sorry we dont have a 330 foot just a 594 foot.

Mine
RT - .330
594 foot - 8.089
1000 foot - 10.998
1254 foot - 12.586

Cobra GT500
RT - .377
594 foot - 7.687
1000 foot - 10.586
1254 foot - 12.175

 

I will put it all together to see better. Thanks for looking at it.

Mine
R/T - .330
60FT - 2.123
594FT - 8.089
1/8ET - 8.583
1/8MPH - 91.09
1000ET - 10.998
1254ET - 12.586
1/4ET - 12.987
1/4MPH - 112.22

Cobra GT500
R/T - .377
60FT - 1.852
594ft - 7.687
1/8ET - 8.186
1/8MPH - 90.18
1000ET - 10.586
1254ET - 12.175
1/4ET - 12.572
1/4MPH - 113.35

 

wow, that's kinda bass-ackward to not have a 330 timer.

Those aren't bad lights at all for street-class.Even with the turbo spool, you still left on him by .047.

RT: +0.047
60ft: -0.271
594: -0.402
660: -0.397
1000: -0.412
1254: -0.411
1320: -0.415

What we like to examine, is the durations.

Yours:
60-594: 5.966
594-660: 0.494
660-1000: 2.415
1000-1254: 1.588
1254-1320: 0.401

His:
60-594: 5.835
594-660: 0.499
660-1000: 2.400
1000-1254: 1.589
1254-1320: 0.397

Basicaly from half-track on, you are dead even. Part of that might be turbo lag or even transmission ratios. If you can improve your 60 and 330ft times, you should have a pretty good gunfight goin.

 

I will be moving to Texas this coming spring so I will be racing there on a real track rather then a taxiway. I will probably lower the psi in my slicks from 15psi to around 12-13psi. This should help with my 60 foot times. I was told by people that were watching that when I was launching off the line the tire was getting two or three revolutions before I moved forward.

 

see if you can get somebody to video the way I do ours- shoe polish the sidewall and concentrate the video on it. We get about 1/3-1/2 of a turn of sidewall wrinkle before it starts moving. 2 or 3 turns is a big exageration (you would literally feel the tire shake, or you'd basically smoke the tires like a burnout) if they were that loose.

At too high a pressure, the sidewall won't wrinkle, and you'll just blow the tires off. Too low, and you'll wrinkle into tire shake. I'm almost wondering if you are too high?

Are you on slicks or drag radials? What size? I have to wonder if 12-13 isn't where you should be already, especially if the track is unprepped as you say.

What part of Texas? We're in FW.

 

They are M&H slicks 24.5/8.5/15. Had the tire pressure at 15psi. I have the video of me doing the 13.07 at only 19psi of boost. A friend told me turn the boost up a bit so I did to 21psi and that is when I did the 12.987 but by that time my wife and packed up all the stuff because we were about to go home so no video of it. I will post up the 13.07 video so you can see my launch. I will be moving to San Angelo. I am originally from Corpus Christi.

 

That's a pretty darn small tire. Have you tried dropping the tire pressure any? We hunted everywhere between 7.0 and 9.0 before we decided that 8.5 is what our car likes (on worn out MT's).

Remember the tire is an active suspension member. If your shocks are out of tune, your tires will try to correct for it. IDK, maybe your car is best at 15psi. Not know very much, I would experiment with 11 and 13psi. You wont be there much longer so at the same time, I wouldn't invest too much time into trying to go faster on an ill-prepared track.