Launching a Turbo Supra?

Jasper

One Cool Dood
Sep 21, 2005
13
0
0
37
The Duluth Area of Minnesota
So I've searched and searched, maybe I suck at searching. Any good tips on launching? I couldnt get a good launch if my life depended on it. If anyone could gimme any pointers, or point me in the right direction thatd be sweet.
 

turbo

Mr. Clean
Apr 27, 2005
135
0
0
39
Calgary
Basically for my car at least and depending on the mods you have, 4000 rpm drop clutch is a solid launch with a little wheelspin but not much. Just rev up around 4k and let the clutch out super quickly and do not let it out slowly. You will only eat away your clutch even more than you are already doing if you let it out slowly at high rpm.

Geoff
 

GrimJack

Administrator
Dec 31, 1969
12,377
3
38
56
Richmond, BC, Canada
idriders.com
This depends SO much on what your car is setup like.

Running a stock NA auto is completely different from launching a 600rwhp monster on a 5 speed with a sintered iron unsprung clutch.

Tires make a huge difference as well - I can launch mine pretty good on my snow tires, but I can't launch for shit on my Falken Azenis performance tires.
 

bkma71

supra coupe
Jun 7, 2005
91
0
0
37
troutdale, Oregon
mine has bolt ons and I rev between 3200-3700 and drop the clutch. I managed to pul a 2.0 60ft on kuhmo ecsta supra's with this and a 13.7 @ 100mph at full weight. However I read I believe it was orion mr 10sec 600hp 1j says he slips the clutch just as if he were driving on the street.

"Rev the RPMs up and let the clutch engage as if you are leaving from a street ight. The car will build boost and launch so hard without breaking the tranny, axles, d/s like popping the clutch will and it will minimize wheel hop. It is called preloading the powertrain and it has gotten me 1.7 sixty foots on D/R at 15psi of tire pressue.

OB 1"
 

stratoayu

New Member
May 13, 2005
435
0
0
surrey
man if i rev any higher then 2900 and drop it, i just roast the tires :S and i dont have that many mods. so i just have it at 2700 and drop it and punch the gas, and i just get wheel spin while going down the road... i cant hook up 1st gear for the life of me :(
 

Eric_Odie

New Member
Apr 17, 2005
163
0
0
37
Fremont, Ca.
www.cardomain.com
my friend and i spent plenty of time trying out different RPMS and clutch engagement, and what works for US is 3500 when racing against most cars. but if the car is 4wd then we launch at like 4000-4200. Also when it comes to depressing the pedal we smoothly/slowly depress it as if we are leaving a street light, dropping the clutch is havoc on the clutch. my teacher in manual transmassions class (@ wyotech) said dropping the clutch as most do is like getting kicked in the nuts really hard by surprise, hahaha. he's the one that i also heard say to smoothly depress the pedal.

also i'd like to add that in my steering & suspension class that i finished my teacher there said that when it comes to launching that dropping the clutch also kinda depends on tire size if your running 245+ then it's better to drop the clutch as far as times go.

just thought i'd add my part to this thread =P when it's late at night go to a stop light intersection and practice. reason why i say stop light is because you can practice your reaction time.
 

gixxer750

2jzget comingsoon!
Mar 30, 2005
2,333
0
0
Mississippi
I usually get 1.9 60's dropping the clutch from 4k rpm with some wheelspin... This is on kuhmo ecsta supra 712's at 30 psi. Tire size is 235 45 R 17.
 

turbo

Mr. Clean
Apr 27, 2005
135
0
0
39
Calgary
I have gone through two oem clutches on basic bolt on mods and the TRD clutch I have now is awesome but I am pretty sure that a high rpm drop clutch wears the clutch disk less than a high rpm slow launch. As for the transmission and bearings and everything else that wears a lot more on a drop clutch. The clutch disk is the main wear point that ruins clutches. Correct me if I am completely wrong but this is what I have come to think based on my experiences with my own car and the many clutches myself and the old lady I bought the car from have destroyed.

Geoff
 

Jasper

One Cool Dood
Sep 21, 2005
13
0
0
37
The Duluth Area of Minnesota
Well, Im rollin on 225 Eagle Ls's 16's...Turbo 5 spd..bone stock, except my Valentine One Radar Detector *adds 73 hp to the wheels*. Only thing ive done to the car is strip the trunkulus. I just know that I need to learn to launch..My launches stink like Nsync. Peee....eeeewww.