How does everyone launch their subies?

Just curious, what rpm does everyone launches off their subies? I launch off at 5.5K rpm. I get a better 1/4 time but my 60' are 1.9xx. Any idea's for an improvement on 60'?

 

From the slowest driver in the club

I lunch at 3km - 3.5km (is the max)

 

I let go of the clutch and push the gas pedal =]

 

I rev to 3000-3500 RPM. When I'm ready to go, I slowly release the clutch as I balance it by applying more gas. This all happens in about one to two seconds (no less or else you'll bog; no more or else you'll t3H Lo$3R).

 

redline and dump clutch like gran turismo...........*note* only works when clutch is dying.....

i can launch my car boucning off the rev limiter, it sends no shock to the drivetrain or anything, as soon as i dump the clutch at redline, the rpm drops to 5.5k and stays while the speed climbs fast as heck and then to redline it goes. Yah i know this kills the clutch more, just looking for a reason to buy an exedy flywheel/clutch combo.



but on a side note, i've launched fuji's car before with a non dying clutch. 4.5k rpm, kinda slip the clutch abit so the car kinda rolls then floor the gas and dump the clutch and off it goes.

 

just another trick is to use the parking brake.. it helps take the slack out of the system... We used to do that in our rotories at the drag slip to help reduce the wheelspin on launch but a 9000rpm launch ya kinda find it hard to eliminate wheelspin.. ha ha ha

 

Thanks guys. I'll have to try it at 3-4K rpm one these days after fixing my car. Anyone know a good road for Gtech? Anyone wants their car Gtech?

 

When im driving the Infiniti, i usually pull up to the stoplight. Apply the brake, then floor it lol There is no launching an Automatic AWD car with Traction Control lol

 

Do not do the above. The parking brake (e-brake) applied when you're launching can destroy your rear diff. (hint hint)

Also, I don't trust the G-tech. It's not consistent and gives you a quicker time (about .5 to 1 seconds) and MPH than you would when comparing it to a real drag strip. It boosts your confidence level which is a let down when you do it at the track. I say this about the G-tech because I've G-teched my RS at the drag strip and it was .5 seconds faster than what I got for my 1/4 mile time on the same runs and it was adjusted at an angle of .01 too.

 

hmmm kinda like oil makes blue smoke...?? ha ha ha

well the trick is FONG you DONT pull it on ALL the way... you do it a little to take up some tension... IT never made any trouble in my rear wheel drives...

besides I dont think I have done it in the subaru... all it is is kinda like a steep HILL start in a stick with a little less e-brake then that... NO BIG DEAL...

what wrecked my diff was having synthetic oil in it... too thin...

 

rev up and down and when you hit 5500 on the up swing of the rpm band (builds 2 or so psi) SLIP THE CLUTCH QUICKLY AND HAMMER ON THE ACCELERATOR....no transmission shock at all.

its gotten me 1.8 60's in my wrx that basicly has exhaust.

 

3500rpms works good for me...I haven't tried any higher and don't feel I need to.

 

I'm pretty sure i'm the hardest on my tranny here.

i rock the launch control on my utec, have it dialed in right at 5000 Rpm, and i basically give it enough gas to build about 4 psi which is about half throttle. I let the clutch out over the span of 1 second from bottom to top and give throttle or take away to keep it in a perfect balance between not bogging and/or boosting too much that kills the clutch. its perfect and not hard at all, tranny seems to get minimal abuse as well as no smell comes from it at all when done corectly.

 

The very few times, I'm ever launched my car hard, This is the way I do it, I figure 4 tires spining relieves a little shock.

 

I think using the parking brake to take up the slack, although a good idea in any other car, is bad news in an STi. When you engage the parking brake, the center diff is disengaged.


Anyone else who drops their clutch with a 5MT is also nuts. People go through 5 speeds every couple months doing that (no joke). I'm on my second and I have 130hp.

If you have a 5MT, you NEED to slip the clutch at least a little bit. I don't know about '05 and later 5MT's, since they have wider gears than all previous 5 speeds. Oh, and STi RA gearsets are a waste of money. AndrewTech Automotive (dealers of PPG gearsets, the best you'll find) pulls more 5 speeds apart with stripped gears than you can imagine. Guys with <250 HP in their SS legacys over at the BBS are blowing theirs without even hard launches.

I don't mean to rain on anyone's party, but I'd hate to see anyone trash their gearbox, and have the dealer hand them a #3k+ bill when they say it was abuse.

This is why I have a 6MT sitting in my garage :woot:

 

hehe, i put mine in D and then push the peddle down. the car moves forward. its alittle slow, but it goes good.

 

I don't launch my car for the reasons listed above. If I wanted to drag race, I would have gotten a Cobra.

:biggrin:

 

ive gone through 3 stockers and 1 KAZZ gearset..... im not nice to my car at all

 

i usually rev it to about 3k and ease the clutch in until about 5k or so
i don't like the feel of a straight drop at any rpm

 

If I was learning, I'd want to learn on someone else's car for starters...

 

again, tranny problems seem to be driver dependant. People break tranny's on stock power levels, while others have quite a few mods and are quite hard on it. I beat mine like it owes me money :naughty:

20+ drag passes, countless launches and she shifts perfect with no grinding and i can throw her in 1st gear at 20 mph (a lot of this is due to Uncle Scotty's Cocktail)

 

Using people's property as a means and not as an end? Evil but effective. I hope the BF doesn't know. :eek4:

 

Hahaha, I was just kidding.

It's pretty out of character for me to abuse some else's stuff.

 

revving up and down between 4k and 5.5k. just build a little boost and launch at 5k or 5.5k depending on what light you get. subies needs alot of slipping the clutch in order for the car not to bogg. my best is a 1.7 60' running a 13.8. my car will spin all 4 tires and my front will shift my car right before i go striaght. let me see if i can get a vid up.

 

Like a bow legged ape.

 

Exactly. Its very driver dependent. I was just reffering to dropping the clutch with no slippage.

I know someone who bought a WRX in late '01 and thought it was so cool that he could drop the clutch and spin the tires for a little bit. On the sixth try, he stripped half the teeth off the input shaft :kekekaugh:

6MT's aren't invincible either. There are pics over on NASIOC of some that have been trashed. Since I'm not into drag racing, mine should hold out for quite a while. Then it'll get a PPG 6MT gearset with slightly longer ratios for road course action:slayer: