Hard Launch Tehnique
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Originally Posted by VRAlexander
(I have clicked of 1.52-1.56 60foot times on Toyo R1's) ...
The problem with the 1st-2nd. gear are the revs drop of around 3100RPMs (stock 996TT) because of the gearbox ratios. The Cup ratios (993GT2 as well) are 3.15 in 1st and 2.00 in second gear, which drops your RPMs by around 2400 instead.
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Originally Posted by ari
While wer'e on the topic, why is it that corvettes can launch without wheel hop and ALL Porsches are cursed with this trait? Trust me it's not because Corvettes handle curves poorly.
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Originally Posted by VRAlexander
In order to get a good launch (I have clicked of 1.52-1.56 60foot times on Toyo R1's) you have to let the clutch eat the entire first gear. I stage my car, pull the e-brake, then slip the clutch and spool up 4-5psi of boost, then I drop the brake and ride the clutch until the shift to second (I do not lift for my gearchanges). If you shift it right, you should only loose between 2-3psi of boost between shifts.
This technique worked well on my turbo until I got the car back from Protomotive. Now if I launch under boost, or powershift the car 1-2, it tends to overpower the wheels to the point where the car will do an involuntary U-TURN and usually snaps an axel..
I hope my technique helps you guys...
This technique worked well on my turbo until I got the car back from Protomotive. Now if I launch under boost, or powershift the car 1-2, it tends to overpower the wheels to the point where the car will do an involuntary U-TURN and usually snaps an axel..
I hope my technique helps you guys...
What is the best recorded quarter mile time you have run with your car?
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Originally Posted by VRAlexander
In order to get a good launch (I have clicked of 1.52-1.56 60foot times on Toyo R1's) you have to let the clutch eat the entire first gear. I stage my car, pull the e-brake, then slip the clutch and spool up 4-5psi of boost, then I drop the brake and ride the clutch until the shift to second (I do not lift for my gearchanges). If you shift it right, you should only loose between 2-3psi of boost between shifts.
This technique worked well on my turbo until I got the car back from Protomotive. Now if I launch under boost, or powershift the car 1-2, it tends to overpower the wheels to the point where the car will do an involuntary U-TURN and usually snaps an axel..
I hope my technique helps you guys...
This technique worked well on my turbo until I got the car back from Protomotive. Now if I launch under boost, or powershift the car 1-2, it tends to overpower the wheels to the point where the car will do an involuntary U-TURN and usually snaps an axel..
I hope my technique helps you guys...
However... The problem with doing this is that you will quickly eat up your clutch. I would guess that you have a rather heavy aftermarket clutch that won't complain as much as the stock clutch. Doing this too many times on the stock clutch is a good way to glaze, if not eat it the clutch alive.
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Originally Posted by Ruiner
I agree with this technique. The best 60ft that I cut on 19" with the Yoko AVS sports (not a great platform for launching) and full tire pressure was 1.79.
However... The problem with doing this is that you will quickly eat up your clutch. I would guess that you have a rather heavy aftermarket clutch that won't complain as much as the stock clutch. Doing this too many times on the stock clutch is a good way to glaze, if not eat it the clutch alive.
However... The problem with doing this is that you will quickly eat up your clutch. I would guess that you have a rather heavy aftermarket clutch that won't complain as much as the stock clutch. Doing this too many times on the stock clutch is a good way to glaze, if not eat it the clutch alive.
Originally Posted by VRAlexander
In order to get a good launch (I have clicked of 1.52-1.56 60foot times on Toyo R1's) you have to let the clutch eat the entire first gear. I stage my car, pull the e-brake, then slip the clutch and spool up 4-5psi of boost, then I drop the brake and ride the clutch until the shift to second (I do not lift for my gearchanges). If you shift it right, you should only loose between 2-3psi of boost between shifts.
This technique worked well on my turbo until I got the car back from Protomotive. Now if I launch under boost, or powershift the car 1-2, it tends to overpower the wheels to the point where the car will do an involuntary U-TURN and usually snaps an axel..
I hope my technique helps you guys...
This technique worked well on my turbo until I got the car back from Protomotive. Now if I launch under boost, or powershift the car 1-2, it tends to overpower the wheels to the point where the car will do an involuntary U-TURN and usually snaps an axel..
I hope my technique helps you guys...
I cant even imagine doing that on stock parts or even lightly modded, that's insane! It seems like you HAVE to do a powershift from 1st to 2nd to have instant spool into the gear, or just shifting fast enough without hitting almost the rev limiter!
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Originally Posted by 2thfixr
For some reason though, I have seen people burnout and do donuts with 993s and 911s but never 996s or 997s. Too much tire width on the 996/997? I Have no idea.....
I tried some hard launches with a LITTLE bit of clutch slip and the car seemed to repond very well. All grip, little slip and very good results. The small amount of slip didn't seem to hurt the clutch. I'm getting the hang of it.
Still miss RWD cars a little though. I miss those tire smoking starts!
Last edited by Turbo Fanatic; Feb 11, 2006 at 02:44 AM.
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