How do you launch an AWD

[AWDkitkat]

How in the wourld do yu launch this beast, im used to fwd H cars.
ive been getting this neck breaking launch followed by a bog out. ive heard when you go through the burnout box (no burn out)you should leave the water on you tires, is this true?

[This message has been edited by AWDkitkat (edited August 25, 2000).]

[Quadcylla]

You can burn out an AWD? I'd say don't get water on your tires and don't do a burnout. Then get your rpms up to 5000~5500 rpm. Then give'er. If you bog again then next run ease the clutch out a little more slowly and be more aggressive with the gas durring transition... this will allow the turbo to spool and get rid of the bog. If you loose grip and don't bog then you need to be less aggressive with the gas and rpms. If you don't bog and don't loose grip remember everything you did and redo it everytime.

Becareful cuz you'll be thru first faster then you can say 'holy sh#t'.

Best way to learn is have someone else with an AWD take you for a ride :).

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http://geocities.com/r337m0nk3y/dvv/asthanos.gif Quadcylla
92 Laser RS-T FWD

[This message has been edited by Quadcylla (edited August 25, 2000).]

[This message has been edited by Quadcylla (edited August 25, 2000).]

[WhoaTed]

Yeah like Quad said, stay away from the water, don't attempt a burn out. Some like to do a mini-launch instead of a burn out to knock the gravel and dirt off the treads.

What rpm were you launching at when you experienced the bog? What tires are you using? What clutch do you have?

[AWDkitkat]

im using falcen ze-502 215/45 on 17s
im launching about 5500 and bog out about 6ft after that

[Quadcylla]

Are you holding it at 5500 thru the launch or is that just where it starts off? Make sure you are aggressive with the gas almost to the point of breaking loose the tires. It feels so unnatural to launch and AWD right cuz if you're use to a FWD it's tough to accept how hard you have to launch.

BTW start saving for a clutch.

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http://geocities.com/r337m0nk3y/dvv/asthanos.gif Quadcylla
92 Laser RS-T FWD

[AWDkitkat]

Ya it feels all kinds of wrong im used to MT slicks on a fwd and still had some kind of slip. the honda was ALOT lighter to.I launch at 5500 and kinda drag the clutch out, if not it bogs out. is that the only way? It feels like im gonna kill the clutch. The dealer just replaced it before i got the car. all i wanna do is take out the rear dif. somebody slap me :)
ill figure it out.

[This message has been edited by AWDkitkat (edited August 25, 2000).]

[Quadcylla]

Your stock clutch will die. It's barely strong enough for normal driving on the AWDs. Once you start tapping into more power and doing hard launches you're clutch will eventually die and you need to upgrade. I recommend the ACT 2600lb with street disc.

But since the clutch in there is new it should last a little while.

Have fun getting it right :).

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http://geocities.com/r337m0nk3y/dvv/asthanos.gif Quadcylla
92 Laser RS-T FWD

[joec]

In other words, something has to "slip". Either the tires, the clutch, or some part of the drivetrain (*snap*).

Since you've got 4 tires putting down power, it's hard to slip them unless you apply a lot of power to them suddenly (in other words, spinning 4 205/55's is like trying to spin 2 410/55's). When you apply that much power suddenly, there's a good chance something is going to break.

Instead, we usually opt to slip the clutch a bit. This lets the engine RPM's go up and get into the powerband.

[jerryredgsx]

Yeah....what joec just said. With AWD, you HAVE to slip the clutch more than with 2WD. Before I got a two step (launch limiter), I would try to hold the gas pedal at 5000 rpm, then as I let up the clutch, floor the gas to keep the rpms up and get the car moving. Don't let the clutch slip too much though...it might not grab if you do. A friend with a stock clutch and 16g turbo used to dump the clutch at 6200 rpm and got consistent 1.73 60ft's.

With my two step and a 5500 rpm launch (two step lets me keep it floored at 5500rpm and builds 5psi of boost at the line), I got a 1.69 60ft on Dunlop SP8000's....WOOO HOOO!


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Jerry Chao
IRC: RedGSX
12.71@105

[WhoaTed]

Hey Hi Jerry!

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http://www.dsmtalk.com/images/forumgallery/burnout.gif Ted - 95 GSX
12.48@109.68 MPH

[jerryredgsx]

Hey Ted....I like the little spinning smiley face in your sig there....

:-)

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Jerry Chao
IRC: RedGSX
12.71@105

[EVOVI]

When lauching the EVO IV. I do not do a burn out and I avoid the water. I have Advan A038R Yokohama tires. I have motec m4
and use the antilag to build boost on the line and antilag when shifting. but before I got the line lock and the m4 I would bring the revs to around 5000 - 5500 sliping the cluch a little so can start building boost while holding on the ebrake to keep the car from starting to roll as soon as it was time to lanch let down the ebrake and power on the gas and releasing the clutch. I do not have a stock cluch and under this kind of abuse the stock one would not last. I use the OS Giken from Bozz Speed of Japan. My car was intended to be used a drag car. and what started me going to drag strip was a challage from some guys with bunch of 14 - 15 sec turbo hondas. I enjoy rally cross the most and circuct racing time attack. so far my best 12.4 at 117 on the track and 13.1 106 on gravel.

oh (this is my edit) I forgot to tell you that here in Thailand they dont sell EVO you have import them here. but they sell normal lancer with 1.6 and 1.8 and I have seen a few with evo body parts. but thing is most everyone who races you on the street thinks hey this is some chump with a evo body kit until left behind and they are trying to remeber you plate number so know next time.


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97 EVO IV GSR
00 EVO VI RS

[This message has been edited by EVOVI (edited September 10, 2000).]

[4G63Rydah]

No one has mentioned this so far....maybe you already know and I'm just wastin my time but...unlike with a FWD Honda which more than likely wasn't turbo charged...with a turbo car u can't keep the RPM steady at 5500 to prep it for launch. If you do that ur PSI will drop off. You have to either pump the gas so the PSI stays up or get a rev limiter which basically pumps the gas for you at a specific RPM.

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'92 Eclipse GS 2.0L NT

[TurboMitsu]

4G63Rydah, I'm not sure if a rev limiter would work that well in building up the boost, Load=Boost to me rev limiter would be to rapid of a "pulse" - but that's just my theory :) I don't have a limiter so I can't base that on anything -other than a quick foot action :D

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http://www.tadmotorsports.com/tad-images/images/cars-pages/cars_evovi00stpr02.jpg

[AWDMIKE858]

As I recall, some rev limiters retard the timing enough for the engine to keep the boost up there. Like the DIS 2 and the stutterbox... I think if you bounce your rpms of 7200 (max i think) then youll hold boost, if wants to give it a try let me know what happens but dont blame me for any booms :)

[WhoaTed]

With my Todds Mods stutterbox I hold at least 5 pounds of boost at the tree...

And yes, you can hold boost at the tree with the DIS2 also.



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http://www.dsmtalk.com/images/forumgallery/burnout.gif ** Ted-95 GSX **
http://www.turbologic.com/images/smallcar.gif

[ndahbar]

My stock '99 GSX clutch is slipping bad now, and I'm only 26k miles! =(

However, I bought the car @ 12k miles, so dunno how 1st owner was on the clutch. =p

Nonetheless I've done soome GREAT launches(I was glad I caught on REAL fast on how to properly and smoothly launch her!) which I'm sure have hurt the clutch bad, plus very agressive racing at high speeds.

I love to haul in 1st and 2nd gears too. Most of the time. =)

So, the stock clutch has taken it's toll, and time to change (just ordered an ACT2600). Well also I should mention I have some mods but stock turbo. Nonetheless car much stronger than stock but I just wanted to share that the stock clutch is NO GOOD unless you are my grandma in an Eclipse.

[gsxalex]

EVOVI
What is this "anti lag" that you talk about?
How does it work?

I haven't seen you post much lately, i hope you still participate in these forums.

[SilverGSX99]

Yea, Unless you have a 2Step the best way is to play with the throttle at around 5000 - 6500 RPMS... Youll notice that you will build Boost anywhere from 5psi - 10psi. Then just pop that clutch and BAAAAAAAAAAMM. Hold your Breath becuase you wont be able to breath for a few seconds. I usually get like 7 - 10psi with my T25. You will definetly need a new Performance clutch if you are using this method. Im sure it isnt good on the tranny. Some people prefer to ease of the clutch till it grips a little the let her RIP! Good luck!

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1999 Eclipse GSX
T25
60ft: 1.85
1/4 : 13.88@96mph

[ForestTalonAWD]

BTW, the larger your turbo the less boost you will see on launch, *all other factors being the same*. The reason the larger turbos spool slower is the same reason you'll see less boost under launching cicumstances - a given volume of exhaust gas (engine-rpm-based) will have the turbo spinning at a lower rpm than with a smaller exhaust wheel/turbine housing.

Now, with that out of the way ... with my ACT 2600 on my Talon TSi AWD, for a really bad-ass launch, I'll rev to ~ 6000 rpm, slowly let out the clutch while applying throtte, then when I feel the tires biting, I'll let the clutch out and be imprinted on the tan leather seats!! I've found that in *my* car, I'll get faster launches with this method than by side-stepping the clutch immediately (which results in chirping/spinning all 4 tires, mostly the rears for some reason), mainly because it allows boost to build while I ease out the clutch.

Anyone ever launch an *automatic* AWD with a high-stall torque converter?? I bet that's a blast - ~ 10 psi from power braking, then just letting off the brake ... :eek:

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1993 Forest Talon AWD - modified

[92 Celica All-Trac]

Try this: hold it at about 5000 rpm and right before you let the clutch out, FLOOR IT! It works.. :)

[PumaGSX]

is when you do hold the RPM's at one spot and try to launch like a NA car. You cannot launch with negetive vaccum or the bog you experience is from the boost trying to build back up. If you don't have a DIS 2 and are still using the stock turbo then you should keep feathering the gas pedal and try to get your launch at 0 vaccum. Then it's just a process of slipping the clutch right and flooring it. Good luck and just make sure you practice feathering the gas.

[fireblaze]

Stock clutch sucks. You have to find the balance between bogging and giving too much clutch. Two-step will really help to build boost from a dig.

[french_hustler]

Stock clutch sucks. You have to find the balance between bogging and giving too much clutch. Two-step will really help to build boost from a dig.


Damn son. You brought that thread back from the grave. Older than that grandma we raced :D

[MacGSX]

7 years and 2 months later...... Try to read before you post some stuid shit like this. I wonder if that guys clutch ever gave out......

Jordan

[french_hustler]

It's kinda tight seeing whoated's replies.

I thought he made a special appearance out of no where for a sec.... Until I saw the original date :(

[fireblaze]

7 years and 2 months later...... Try to read before you post some stuid shit like this. I wonder if that guys clutch ever gave out......

Jordan

Suck a dick. If you didn't like it, you could have pressed the back button (it's usually in the top left of your browser). You ask people to search, yet cry when a post is brought back. My clutch did not give out. I was simply stating that stock clutches grab way less than aftermarket, pretty obvious.

[MacGSX]

Uh oh, did I make somone mad??? I'm not the one giving advice to somone 7 years late :rolleyes: And I was sarcasticly making that clutch comment about the OP.... :wall:

Jordan