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Joined: Nov 2002
Posts: 89
CEG\'er
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OP
CEG\'er
Joined: Nov 2002
Posts: 89 |
What is the best way to launch an SVT? I raced mine for the first time yesterday and found it hard to launch at more than 2000 RPM or so because of wheel hop issues.....I got my best time of the day by dropping the clutch at 2K but had massive wheelhop with stock differential. How fast to release the clutch?
1998 SVT EO
Silver/Midnight Blue 109k
Best E/T to date: 15.670 @ 89.10
K&N
Blaupunkt 10 disc CD
'99 SVT wheels
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Joined: Jul 2001
Posts: 4,168
I am Canuckian
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I am Canuckian
Joined: Jul 2001
Posts: 4,168 |
You need to practice to find the sweet spot just before you would get wheel hop. As we all know wheel hop is bad unless you are looking to put in a LSD some time very soon. As for the rpms to launch at? I'm not really sure I'll let the SVT owners chime in. Personally though I try to launch @ 2500 rpm with some clutch slip to ease the power to the pavement. I had one of my best launches yet yesterday (only been out 3 times so far) 60=2.329sec. For the record the SVT and the regular V6 seem to launch about the same from what I've. Once the SVT gets going it goes like a bat out of hell. I should know I got shown up good yesterday. Thanks SVTCANUK.   It was loads of fun.
Green 96 mystique gs 4cyl mtx
16.9 in the 1/4 mile @102500 miles
95SE in Midnight Red MTX
MSDS headers and y-pipe
SVT exhaust
SVT UIM
Optimized se TB.
Full pre 98 SVT body kit
15.741 @ 87.73mph :)
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Joined: Sep 2001
Posts: 1,516
Hard-core CEG'er
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Hard-core CEG'er
Joined: Sep 2001
Posts: 1,516 |
Here's a vid of my 2.297 launch. Don't know if it'll help - ftp://cssvids.gotdns.com/scott.mpg
Mazda 6S, V6, Speed Yellow
5 Speed, Sport package
Bose audio
Painted 'stash and HIDs!
w/Injen 1/4 14.750 @ 94.94
Former car:
99 Contour SE Sport Black MTX V6
SVT plastic...
1/4 - 15.012 @ 90.58 
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Joined: Nov 2002
Posts: 89
CEG\'er
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OP
CEG\'er
Joined: Nov 2002
Posts: 89 |
How were you launching on that run?
1998 SVT EO
Silver/Midnight Blue 109k
Best E/T to date: 15.670 @ 89.10
K&N
Blaupunkt 10 disc CD
'99 SVT wheels
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Joined: Sep 2001
Posts: 1,516
Hard-core CEG'er
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Hard-core CEG'er
Joined: Sep 2001
Posts: 1,516 |
I believe it was a steady fast clutch drop at 3000 RPM, and that caused it to go into where the secondaries open up, so everything worked out OK.
Mazda 6S, V6, Speed Yellow
5 Speed, Sport package
Bose audio
Painted 'stash and HIDs!
w/Injen 1/4 14.750 @ 94.94
Former car:
99 Contour SE Sport Black MTX V6
SVT plastic...
1/4 - 15.012 @ 90.58
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Joined: Aug 2002
Posts: 208
CEG\'er
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CEG\'er
Joined: Aug 2002
Posts: 208 |
I dont remember having this kind of problem launching my 96 SE MTX, but my 00 SVT (with a quaife) has serious wheelhop issues on an agressive takeoff.
I have been testing it with a tazzo (which is like a g-tech, except it has two accelerometers and is self-leveling unlike a Gtech), and I found that every once in a while I stick on the launch and get tire spin instead of wheelhop. Further testing showed that I can get a pretty consistant 2.29 60' if I launch with the front wheels skewed just off center a little bit (ie pointed slighty to one side) -- it seems to help with the weight transfer/distribution a bit. Has anyone else noticed this or tried this? Im going to try and get it to the track amd see if it really works, but it definately seems to work from stoplight to stoplight. I can dump about 2500 into it and stick pretty good.
00 SVT Contour: SHM LT headers, LSD, Spec Stg 3...dyno:190.3whp sold 02/04
04 Subaru Baja Turbo 5-spd
00 Camaro SS 393cid: 510rwhp/469rwtq, 11.16 @ 124.95(hit 1-2 limiter)
www.erikz.org
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Joined: Nov 2002
Posts: 8,143
Hard-core CEG'er
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Hard-core CEG'er
Joined: Nov 2002
Posts: 8,143 |
i have no skills when it comes to racing but...
do u just rev up to around 2-3 RPM and just dump the clutch or do u hold it at 2-3RPM and gradually let off the clutch?
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Joined: Jul 2001
Posts: 4,168
I am Canuckian
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I am Canuckian
Joined: Jul 2001
Posts: 4,168 |
I've dumped it once. Never again though. Bad wheel hop.
Green 96 mystique gs 4cyl mtx
16.9 in the 1/4 mile @102500 miles
95SE in Midnight Red MTX
MSDS headers and y-pipe
SVT exhaust
SVT UIM
Optimized se TB.
Full pre 98 SVT body kit
15.741 @ 87.73mph :)
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Joined: Dec 2001
Posts: 2,676
Hard-core CEG'er
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Hard-core CEG'er
Joined: Dec 2001
Posts: 2,676 |
I think it's tire dependent, because I did a 3K dump on my csvt with an open diff on my 215/45 KDW and I had wheel hop like mad. . .I rotated tires shortly after that(I was had driven 7k on those front two w/o it, BAD SUNEIL), did the same full dump at 3k, tires squeeled with the open diff and I was just flying. . .I need to make it to a track, though, to figure the logistics out. . .now with the quaife, I'm thinking fun time. . .
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Joined: Feb 2003
Posts: 2,975
Hard-core CEG\'er
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Hard-core CEG\'er
Joined: Feb 2003
Posts: 2,975 |
At another site I found a good tip for launching any FWD.
"raise the back of your car by... over inflating tires, and buying rubber spacers to go between coils... this will help with weight transfer... cause you dont want weight transfering onto the back tires...."
"you wanna let out some air on your fronts..."
"slipp the clutch at the line, using the e-brake to hold you back, then dump and launch, very hard to do, takes tiem to learn"
1992 Ford Escort LX-E
-Tracer LTS spoiler
-GT Grille
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