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Old 02-27-2001, 12:46 AM   #1
ac_gohan
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Join Date: Jul 2000
Location: Bay Area, I-Speed Tech
Vehicle:
2000 2.5 RS-T coupe
T3/04 Link'd 2 10 PSI

Post How to launch from dead stop


Ok im not really sure of how to launch our cars yet. I cant seem to find the most effective method of getting our cars to unleash the most hell off the line. Ive tried the slip at 5400 rpm and i know not to drop the clutch. Also there is another way like you rev it up to 4k quickly and then release the clutch. Is there a difference when holding at an rpm and then slipping or reving it up and slipping at the same time. I just need to know the most effective launch. What do you guys think?
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Old 02-27-2001, 05:07 AM   #2
scoobiejosh
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Post

*not recomended, may be hazerdous, warning, blah blah*
My best launch is off the rev limiter with a little bit of clutch slip. If you get it right you wont bog. This is hard on your clutch, and i only do it once in a blue moon. But better the clutch wear than the tranny break.

Josh
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Old 02-27-2001, 09:03 AM   #3
Damon
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Post

here is how i do it..

put in 1st, rev to 4.5k, drop clutch.

(edit for spelling)

[This message has been edited by Damon (edited February 27, 2001).]
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Old 02-27-2001, 01:09 PM   #4
m750
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Post

Damon - and you still have a tranny?
I'd have to say, 3.5 slip, and go...
like others said better a clutch than a transmission
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Old 02-27-2001, 01:34 PM   #5
Sunrise City Rider
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Blue Ridge Pearl

Lightbulb

This is where my Vaccuum Gauge in the Subaru Gauge Pack comes in. I feather the X, bringing the RPMs to Redline, while keeping the Vaccuum at Max...60 or so. I then rapidly slip the clutch and floor the accelerator at the same time. Plenty of Clutch smell but 1.9s 60 Foot times, N/A.
My clutch hates me but my tranny appreciates it.
Zee
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Old 02-27-2001, 02:22 PM   #6
mrbell
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Post

I agree w/ Sunrise, except I dont' have the guage, and don't go all the way to redline. I stay around 4-4.5k, then gas to the floor so RPMS starts to come up and quickly(smooth, not sudden) release the clutch and away you go. Sometimes it doesn't quite work and the clutch keeps slipping pretty badly after I'm off the pedal and fills the car w/ something that I know can't be good for me. When it works tho, WHEE!
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Old 02-27-2001, 08:09 PM   #7
Damon
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Smile

its rare that i do that, but its fun as hell when i do it m750!

<-- will have a 2.0 sooner or later anyways, who cares.
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Old 02-27-2001, 08:20 PM   #8
ColinL
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"will have a 2.0 sooner or later"

Actualy the engine is relatively safe from your enthusiasm, it's the tranny that will break. Do a little searching if you're curious, but either plan on multiple RS boxes, a really expensive hardened gearset, or maybe a WRX donor tranny (too soon to tell, obviously).
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Old 02-28-2001, 09:52 PM   #9
Freeskier
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Can a WRX STi tranny be fitted to stock RS? And is it worth it (stronger or not)? Does this affect the redline at all, my guess is no but I'm not sure.

Stefan
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Old 03-01-2001, 10:22 AM   #10
Damon
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the wrx tranny will bolt straight up the the 2.5 block from what i understand. then new tranny will not affect your redline. you have to build up your engine to stand the wear and tear.
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Old 03-01-2001, 10:34 AM   #11
BrysImpreza
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ehhh... just do it the old fashioned way, floor it off the line, shift around 5.5 in first ,then 5 in 2nd and let 3rd gear be your best friend, you can get it up to about 70 before the rev limiter kicks in in 3rd gear. Throw it into 4th and stay there until about 90 mph, works well for me.
I've only lost to most 8 cylenders, certain Turbos (Talon TSi, Audi 1.8T) and an RS
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Old 03-01-2001, 02:24 PM   #12
jetfreak
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Rev the engine up to where it makes max. torque(166ft-lbs@4,000rpm on a stock Phase II motor) and slip the clutch smoothly but quickly making sure the rpms don't drop. Shifting should occur a few hundred RPMs more than max. horsepower(165bhp@5,600rpm). This should put your RPMs in the best torque range when shifting on a stock unit. Launching is definitely hard on the clutch. Launching with a clutch out of adjustment is brutal. And expensive.
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Old 03-01-2001, 04:28 PM   #13
XTREME 2.5
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My expereince with launching has been: rev to about 6K and smoothly let out the clutch. I have over 90 passes on a stock clutch, it slips a little now but not bad for so many passes.
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