How do i launch my AWD [Merged 6-7]

[Bd1000Eclipse]

Originally posted by autronicDSM
once won't do too much damage.

thats like saying "one time having sex wont get her pregnant or give me an STD.."

 

[DeezNutsForYou]

I know that changing 1st gear doesn't effect 2nd. That what I am proposing is that people just launch in 2nd instead of spending the money for a vr4 first gear. I am trying to compare the two gears, one being the vr4 first gear and the other being a stock second gear. I think they are very similar and I was just wondering if anyone has launched in 2nd because it tops out around the same place that the vr4 first gear does.

 

[Defiant]

I'll try again: 2nd is too tall for launching. Trying it will tend to make it bog.

 

[DeezNutsForYou]

But its not much taller than the TRE or the vr4 1st. I would like to see the number if anyone has them. I don't what the gear ratios are but they can't be that far from each other.

 

[eclipse93b]

when did you first launch your AWD baby? not as in like at 3/4000 rpm but like 5500 and full out throw your ass back in the seat and give you whiplash type launch.

mine was yesterday at a meter for the on ramp it was sweet!!!!

 

[eclipse93b]

sorry posted in the wrong forum thats what i get for being up so late
can a mod please move to the appro. place

thanks
kyle-

 

[98TsiAWD]

I would move it, but I dont have access to this forum.
I still remember the first time I did an AWD launch, but it wasnt in my current car, it was in a bone stock 95 tsiawd that i was test driving before I bought this one. I had the 95 for like 3 days straight, they just let me take it for the weekend.

 

[machgsx]

I've only launched at 4k rpms. It's all stock so I'm not chancing anything just yet.

 

[DeezNutsForYou]

can anyone tell me if its possible, or if it would just f*ck up your tranny.

 

[GRNDSM]

This will have no effect on the tranny. But you will take off a lot life off your clutch. My guess is that is that one such launch would be the same as 10-20 conventional launches with some clutch spin.

Personally, I HATE GVR4 1st gear! I really can not stand it! So starting in 2nd would suite my driving style even less...

Leon
RR

 

[beast_bl]

Originally posted by DeezNutsForYou
can anyone tell me if its possible, or if it would just f*ck up your tranny.

I live in the great white north and because of that, I have to drive in snow alot of the time. When it's really crappy, I start off in 2nd. Only becuase it's less torque, so wheel spin is less likely and I won't burn the clutch out feathering it into 1st until I get traction. Several driving instructors have recommended this technique and have used it for years without any ill effects on their trannies'.

That being said, the rpms used starting in 2nd for winter driving are not your typical 'launching' rpms so I can't really vouch for your tranny's life when you are racing.

Also, 2nd may be 'taller', but it provides less torque off the line and your acceleration will suffer, and in turn you will run slower. That's why they buy different 1st gears, still good torque off the line and it's 'taller'. So, my advice, either buy a new first gear or learn to shift faster.

 

[DeezNutsForYou]

true you will have a little less torque than with the vr4 first, and a lot less torque compared to your stock first gear. But I meant for people who already run 12's with the stock first gear. I think it would help them, because they wouldn't have to shift instantly after launching.

So yes it would have a little less torque, but you wouldn'y have any down time from the 1st to 2nd shift, so I think it would actually be faster. I would deffenetely increase your 0 to 60.

If someone else actually knows somethin about gearing please chime in and give us your input.

 

[ILOSE]

First let me say that I drive a FWD. so this may not apply to you awd guys. But anyway, I launch in second all the time. For 2 reasons.
1. my tranny doesn't like to 1-2 shift very well 100% of the time.
2. man pulling through second without that 1-2 shift is just exhilerating! The car just keeps going. I am hard as hell on my car though so take it for what its worth. I launch at some pretty high rpms so bogging does not occur, but too high and your just gonna sit and spin. (new stutter box will take care of all that though) I have done this on drag radials and slicks.

 

[beast_bl]

Originally posted by DeezNutsForYou
true you will have a little less torque than with the vr4 first, and a lot less torque compared to your stock first gear. But I meant for people who already run 12's with the stock first gear. I think it would help them, because they wouldn't have to shift instantly after launching.

So yes it would have a little less torque, but you wouldn'y have any down time from the 1st to 2nd shift, so I think it would actually be faster. I would deffenetely increase your 0 to 60.

If someone else actually knows somethin about gearing please chime in and give us your input.

I do, and I did.

The whole point of 2nd gear is to CONTINUE acceleration, not start it, hence the lower torque.

Shifting takes a millisecond, if it takes more than that, don't race. The amount of time you would lose because you don't have enough torque in second gear to get going fast enough is monumental in comparison.

Your zero to 60 time will increase, and you will be slower, try it yourself and see.

Regardless, this is a moot point, all the hardcore dragsters are automatic anyway, and they don't have to worry about this problem at all.

 

[DeezNutsForYou]

I don't want to argue with someone with a bone stock car. I am not talking about your car or even mine, I mean for people that are thinking about getting a different 1st gear anyway. I think this could be about equal and save people time and money.

 

[Defiant]

Okay, we've all told you it's a bad idea. Now just go and do it. Why did you ask?

Come back and tell us how it went.

 

[Bohrn]

ok, taken from VFAQ

1g 1st gear is 3.08/1, GVR4 1st is 2.85/1 and second gear in 1g is 1.83/1

1g - GVR4 difference is approx 8% whereas the difference between 1st and second is 41% NOT a good idea.

Also, I can do about 20mph in 1st and 60 in second. Big difference again.

 

[DeezNutsForYou]

Thanks, thats exactly what I wanted. Everyone has their own opinion, but no one supplies any info. Sorry I didn't think about vfaq. People must be full of shit when they say they can hit 40 or 45 with the vr4 first. Unless they spin to 9 grand.

anyway this seems to prove its a bad idea, but maybe someone in the 10's or 11's could still benifit from it. Defenetetly not me, at least not anytime soon.

 

[pneumo]

Cars in the tens usually get around the low first gear by raising the rev limiter so they can take first gear out to 8500 rpm or so.

From personal experience, as I got into the 12's I had to practice doing the 1-2 shift sooner and sooner so that I wouldn't bounce off the rev limiter. that's part of good driving, knowing when to shift. Once I perfected the technique everything was fine, and my desire to buy a GVR first gear dissapeared. I'd rather not spend money to cover up bad driving anyway.

 

[Bohrn]

the taller 1st gear is not just for the track.

I find that around town if I take off nice, it is so short that people behind me almost hit me. If I had a taller gear, I could still drive for fuel economy, but be less hampered by the short gearing.

 

[JeffreyS]

Borhn is 100% correct on his figures and since I just had my transmission rebuilt last month and had a GVR4 gear installed, I can tell you it's definitely not a 45MPH gear.

I grew up with late model Mustangs and expected the 1st gear to last at least to 30 MPH, but not on the stock DSM. After installing the new gear, I find myself not thinking I'm going to get hit by some shmuck trying to rev hard behind me - especially since my synchros were going and missing 2nd became a daily event

I'd wager that the GVR4 1st - in real world equates to about a 5-6 MPH top end difference at 6000RPM - though I'm still being kind during my breakin period

hth

 

[bignbumpin]

Just wondering how you guys launch your AWDs. I still have a stock clutch, but i figuer if i dont launch too often id be ok for now. Any tips/suggestions?

 

[TurBoGs-T]

5k or 5.5k Dump. But like you said take it easy on you stock clutch.

 

[CycloneAWD]

Here is what I do...

I rev till about 55, or 5700...and play with the throttle at that point kinda bouncing off of my "limiter" at that RPM range...when the light goes green...or the starter waves to go...I feather out my clutch, kinda slipping it...building boost then letting it go when you feel boost...the car surges forward and you have to grab second really quick, but its a rush...

Do take it easy on your stock clutch, as depending on the miles/kms it has, you may kill it really fast...plus the AWD launches, as fun as they are to perform and to watch..really do kill your flywheel as well...Trust me I know...

Just remember to feather...not to "dump"...and you will be ok...


Have fun launching...

Arif.

 

[allwheelTSI]

yeah,don't dump it,not good for your tranny or center differentil.. take it up to 6k and slip out out hard,maybe for around 2 seconds..