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Old 08-23-2005, 09:38 PM   #1
Vampyr
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Default How do I spool up my turbo at the dragstrip?

I've never ever ever drag raced a turbo before.
I've taken my motorcycle to the dragstrip, so I'm somewhat familiar with a manual.
How do I spool up my turbo at the line? do I put it in gear and spool up with the emergency brake? Do I get my boost up with the clutch in?
Do I pop the clutch off the line?

I need help as I am going to the local dragstrip in a month.

Thanks!!
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Last edited by Vampyr; 08-23-2005 at 11:07 PM.
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Old 08-23-2005, 09:51 PM   #2
kcook
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stage. rev to 5.5k .. and slip the clutch and ur off
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Old 08-23-2005, 10:16 PM   #3
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...start by having at LEAST $2k in the bank for a new tranny....and/or a new clutch....and go from there.
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Old 08-23-2005, 10:19 PM   #4
flabele
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Quote:
Originally Posted by Uncle Scotty
...start by having at LEAST $2k in the bank for a new tranny....and/or a new clutch....and go from there.

Rev it up and down from 1 to 5 and then slip the clutch really fast at 5,000. Make sure you catch it on the up rev.. Put some extra air in your tires to get them to spin too...And then you might have to buy that new tranny.. good luck.
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Old 08-23-2005, 10:20 PM   #5
Davenow
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Quote:
Originally Posted by Uncle Scotty
...start by having at LEAST $2k in the bank for a new tranny....and/or a new clutch....and go from there.

He has an STI. The tranny will hold.

And at you suggesting he could replace an STI tranny for 2k.
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Old 08-23-2005, 10:21 PM   #6
flabele
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Quote:
Originally Posted by Davenow
He has an STI. The tranny will hold.

And at you suggesting he could replace an STI tranny for 2k.

Didnt notice u had an sti. Different story i guess...
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Old 08-23-2005, 10:22 PM   #7
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Quote:
Originally Posted by Davenow
He has an STI. The tranny will hold.

And at you suggesting he could replace an STI tranny for 2k.
Actually USDM tranny's are pretty cheap. They can be had for 2-2500.. That is of course just the box.
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Old 08-24-2005, 12:17 AM   #8
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Ya dont do like i did and be stupid with the boost turned down and pop the clutch at redline sure it works the first 2 times but the 3rd time when i turned down the boost BPLAAAOPP click click click click. Limped home on 2nd 3rd 4th. When first went out it threw out the snychro to 5th. That range up a nice 2 grand, luckily i didnt pay for it the warranty did. Also its not the best way to get traction, practice on empty smooth streets to get the hang of feathering the clutch, then let out the clutch when youve begun to roll. Your buttometer will let you know when you get a good launch And you wont blow your tranny cause the streets are more slick, so your tires will spin more. But 5 grand is good for a sti. I do mine at 4 cause there is no reason to go any higher in a wrx that dont have the top end

Last edited by trxdam; 08-24-2005 at 12:21 AM. Reason: Grammar
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Old 08-24-2005, 01:00 AM   #9
Airborne Guy
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I rev and hold at about 6k, then i feather it and take off. Usually very little tire spin!!

oh and spray the hell out of the I/C sprayer too
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Old 08-24-2005, 01:06 AM   #10
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Quote:
Originally Posted by AIRBORNEGUYWRX
I rev and hold at about 6k, then i feather it and take off. Usually very little tire spin!!

oh and spray the hell out of the I/C sprayer too
*** u dont have wheelspin? how!? (SARCASM)
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Old 08-24-2005, 01:26 AM   #11
bo9877
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Quote:
Originally Posted by Davenow
He has an STI. The tranny will hold.

And at you suggesting he could replace an STI tranny for 2k.
The STi tranny should hold, but the axle shafts might not...they can shear off if they get too much power at once. Even in the strongest systems, there is always a weak link somewhere.
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Old 08-24-2005, 01:49 AM   #12
Carlos_WRX
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Quote:
Originally Posted by bo9877
The STi tranny should hold, but the axle shafts might not...they can shear off if they get too much power at once. Even in the strongest systems, there is always a weak link somewhere.
actually ive his car is a stock 2005 sti it should hold alot better then u imagine ive its a 2004 then worry a little more on the axles dont know why but havnt seen a 2005 pop them yet only 2004
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Old 08-24-2005, 03:58 AM   #13
bezerk
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Wait until your 5th gear syncro goes....be careful with that shift.
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Old 08-24-2005, 04:11 AM   #14
00Maddog
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lock the diff 50/50 to launch. that's what really tears up the axles, launching in auto mode.
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Old 08-24-2005, 06:59 AM   #15
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make sure u turn of your a/c and close all ur windows when u run .. i bet u thats y so many cars ran like crap at taht etown event..
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Old 08-24-2005, 07:04 AM   #16
2002WRXSTi
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Quote:
Originally Posted by verendia
make sure u turn of your a/c and close all ur windows when u run .. i bet u thats y so many cars ran like crap at taht etown event..
The AC shuts off the compressor at full throttle and you are not allowed to have any windows open when you go down the strip.
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Old 08-24-2005, 07:49 AM   #17
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As mentioned above, pumping the gas (and not just holding a certain rpm at the line) will spool the turbo nicely. I've been playing around on an open downpipe the past couple days, and when revving the engine in the 5000-5500rpm area you can hear that the turbo is already spinning pretty fast. There are a lot of different ways that people launch, I prefer to slip the clutch initially, then once the car is moving I drop the clutch to transfer all the weight to the back. I've cut 60' times as low as 1.66 so I guess this works. DCCD open and all the way to the back is the fastest, but as others have mentioned it is pretty abusive on your rear axles.
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Old 08-24-2005, 11:10 PM   #18
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Find where your clutch is just short of engaging. Hold there. Rev to about 3K and hold. When you are ready to go, floor the throttle, as it approaches 6K, slip dump. Get ready for 2nd gear, because it will come up quickly.
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Old 08-24-2005, 11:14 PM   #19
Airborne Guy
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Quote:
Originally Posted by metoo
Get ready for 2nd gear, because it will come up quickly.

oh so very true......
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Old 08-24-2005, 11:34 PM   #20
snwman
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if you really want to Build Boost on the line get some form of engine management that will do it. AEM or Hydra will allow you to build pretty good boost before your lauch, but you got a STI so its gonna have to be the Hydra.
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Old 08-25-2005, 09:50 AM   #21
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Quote:
Originally Posted by Vampyr
I've never ever ever drag raced a turbo before.
I've taken my motorcycle to the dragstrip, so I'm somewhat familiar with a manual.
How do I spool up my turbo at the line? do I put it in gear and spool up with the emergency brake? Do I get my boost up with the clutch in?
Do I pop the clutch off the line?

I need help as I am going to the local dragstrip in a month.

Thanks!!

http://www.beergoggles.org/subaru/20...k/MVI_1385.wmv <--- You can always launch off a two-step like the UTEC's launch control system.

Redline8k's '02 bug eye on the inside lane with a v. VII RA-C full driveline swap and an HKS2540 kit.

Doctornick's old school wagon with a v. VII STI full driveline swap with a green.

EDIT: P.S. if anyone wanted to know what a fujitsubo header sounds like, that's the car on the inside on the 2 step.

Jorge (RiftsWRX)
www.ProjectWRX.com
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Old 08-25-2005, 09:58 AM   #22
cronic
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Quote:
Originally Posted by RiftsWRX
http://www.beergoggles.org/subaru/20...k/MVI_1385.wmv <--- You can always launch off a two-step like the UTEC's launch control system.

Redline8k's '02 bug eye on the inside lane with a v. VII RA-C full driveline swap and an HKS2540 kit.

Doctornick's old school wagon with a v. VII STI full driveline swap with a green.

EDIT: P.S. if anyone wanted to know what a fujitsubo header sounds like, that's the car on the inside on the 2 step.

Jorge (RiftsWRX)
www.ProjectWRX.com

Well what did they run?
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Old 08-25-2005, 10:19 AM   #23
RiftsWRX
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Quote:
Originally Posted by cronic
Well what did they run?
Like crap, it was too damn hot and humid out.

Nick's best quarter (Redline8k) was a 12.4 and his best MPH was like 114, and Neal's (DoctorNick) was 12.6 and his best MPH was 109.

It was our midwest shootout day. Stage 2 STI's barely hit 13.2's at best, and the fastest stage 4 Rex hit 13.01.

One of our Rex turned EVO guys BARELY cracked into the 13's with a full exhaust.

It just sucked all around.

Jorge (RiftsWRX)
www.ProjectWRX.com
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Old 08-25-2005, 01:54 PM   #24
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If you want to keep your engine stock but setup a 2 step like Jorge said, you can always get an AFC and to put a sh i t ton of fuel in the car at like 75% throttle and 5800 RPM, then as soon as you go 100% throttle the car should pull out of it on like a bar or so of boost and you're off! It takes some tinkering, and some practice two stepping, but it's a LOT of fun and cheaper to pick up a used AFC than buying full engine management if all you want is to launch hard...that's ghetto style 2 step
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