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View Full Version : Weight distribution and 1/4 mile



FrancoTheTanko
06-23-2009, 05:22 PM
So a group of guys from work and I decided to go to the drag strip the other weekend. we had a weigh in before the race but I was too lazy to take my subwoofer and spare tire out. Here's (http://spreadsheets.google.com/ccc?key=rAW9ys9zGostyQfWP8pOeyg) the weight distribution.

Here's my best run. The only way I got the turbo to spool from launch was to drop the clutch at 6krpm! Other runs I tried to drop it at 4k and 5k but it bogged every time. All my shifts were perfect and my clutch didn't slip at all. I'm still not sure what's wrong with my setup. The ECU is still says there's a boost leak and I am running lean. I plan on doing a boost leak test next week because I get the whole week off, I'm gonna install my motor mounts and do a cat-delete also.
http://img193.imageshack.us/img193/6576/1311310.jpg
I'm on the right.

GetBoosted84
06-23-2009, 09:09 PM
Wow I thought GT28RS Elim setups were well into the 13s in the quarter. What's your CAPS time?

STS9king
06-23-2009, 09:10 PM
that looks about right for a gtrs. not a bad 60 ft. time either.

biketsai
06-23-2009, 09:24 PM
Well he is running a cat right? And possible boost leak? That car should be in the 13's though

STS9king
06-23-2009, 09:27 PM
with a 97mph trap, a high 13 is achievable.

FrancoTheTanko
06-24-2009, 08:19 AM
not sure what my CAPS time is. I've read alot about the elim getting people into the 13's easily but I have to find my problem first. Could it be running lean due to a bad MAF? I have a 2.5" HFC so it'll be like a 2.5" TP very soon [:D]

mike-2ptzero
06-24-2009, 08:55 AM
that looks about right for a gtrs. not a bad 60 ft. time either.

What? My K03 ran 14.29 at 97 mph and with the T28(smaller then the GTRS) I as running mid 13's. Anyone with a GTRS should be running low to mid 13's on pump gas.


Franco - are you holding the engine at a set rpm and then going or are you going WOT and then releasing the clutch when it gets to a set rpm you want to launch at?

dcampana
06-24-2009, 10:49 AM
Mike- do you recommend the latter in the above question? reason I ask is I am going to the track tonight and any advice on the launch is appreciated...

sorry to thread jack Franco...

STS9king
06-24-2009, 11:39 AM
What? My K03 ran 14.29 at 97 mph and with the T28(smaller then the GTRS) I as running mid 13's. Anyone with a GTRS should be running low to mid 13's on pump gas.


Franco - are you holding the engine at a set rpm and then going or are you going WOT and then releasing the clutch when it gets to a set rpm you want to launch at?


What should people with a 3071 be running on pump? Did you pull any weight out when you ran 14.2@97 w/ k03?

mike-2ptzero
06-24-2009, 01:19 PM
Mike- do you recommend the latter in the above question? reason I ask is I am going to the track tonight and any advice on the launch is appreciated...

sorry to thread jack Franco...

Yes. Holding a set rpm is the way you launch a NA car or a FWD car. For a turbo AWD car you want to bounce the rpms, go WOT and release the clutch as the tach hits the target rpm you want to launch at. This allows the turbo to spool up quickly and since your at WOT you have a much lower chance of bogging the car. You want to spin the tires a bit to keep the car from bogging as it starts to move.



What should people with a 3071 be running on pump? Did you pull any weight out when you ran 14.2@97 w/ k03?

Depends on the power being made but they should be in the 12's on pump.

Just the normal rear seats pulled out, no spare and Cobra race seats up front.

gli_ryan
06-24-2009, 01:59 PM
well i'll be. My friend with his del sol that ran a 13.9 whooped my ass last weekend. I'm guessing with my gtrs i'd run a high 14. there is something gay with my setup... Uni and aeb files for the loss?

dcampana
06-24-2009, 02:39 PM
so hold WOT, have motor bounce off the rev limiter? then launch from there? i have done a few 5k launches and the damn car falls hard on its face. tried disconnecting the abs module too still no luck. the KO3 just sucks. lol. i hope to go to the track tonigh depending on my work load....

texasboy21
06-24-2009, 02:48 PM
so hold WOT, have motor bounce off the rev limiter? then launch from there? i have done a few 5k launches and the damn car falls hard on its face. tried disconnecting the abs module too still no luck. the KO3 just sucks. lol. i hope to go to the track tonigh depending on my work load....

hahah no thats not it...ill let someone else explain bc im lazy

STS9king
06-24-2009, 02:51 PM
i'm having trouble learning to launch this heavy beast. It seems no matter what I do, it boggs and falls flat on its face. The only decent launch ive had was at 6k rpms and slipping the clutch pretty fast.

Any other tips or advice? my jetta had no problems pulling 1.8's and 1.9's with slicks and this wagon is tough to get below 2.4??????

bob12312357
06-24-2009, 02:59 PM
BounceRPMS around target RPM to build boost. When revs are slightly below target RPMs floor the gas pedal and dump the clutch in one motion. No slipping,dump the damn thing. Take ur foot off it as fast as possible. These cars with their 1.8liter motors can even with AWD can be out 60' by a neon with high performance all seasons. A 1.8-1.9 is good.

dcampana
06-24-2009, 03:02 PM
i did not think so. i assume its a timing thing with the lights to hit at 6k on WOT, and slip the clutch to minimize tire spin (if any)... is that about right?

i feel like a noodtard right now. hahaha

fatjohnperf
06-24-2009, 03:05 PM
How is everyone on here today?

dcampana
06-24-2009, 03:14 PM
^^ what do you mean?

bob12312357
06-24-2009, 03:21 PM
i did not think so. i assume its a timing thing with the lights to hit at 6k on WOT, and slip the clutch to minimize tire spin (if any)... is that about right?

i feel like a noodtard right now. hahaha
Let me make it as simple as possible on an upswing of the revs while bouncing em around FLOOR IT, AND SIDESTEP THE CLUTCH. Our motors have less displacement then a bottle of coke. You are bogging BECAUSE you aren't spinning the tires. The tires will spin a lil,but they are gripping just slippin a lil. Thats the only way 2 get this car out of the hole. Our cars are cruise ships,weigh 3500-3600lbs or so with a driver. With AWD and a high strung 1.8liter motor you need spin. This is not a question. This is not a FWD or RWD car your launching. This car does not have an LS1 and gobs of power under the curve. Drop the clutch, the tires will spin on a chipped K03 with a stock 130K mile clutch if dumped. You should have no problem doing this.

dcampana
06-24-2009, 03:33 PM
got, cautch the revs on the upswing.. for the life of me i can not get tire spin, full clutch dump at 5 or 6k... I do catch on the upswing too. maybe its my heavy ass stupid chrome wheels.

bob12312357
06-24-2009, 03:40 PM
got, cautch the revs on the upswing.. for the life of me i can not get tire spin, full clutch dump at 5 or 6k... I do catch on the upswing too. maybe its my heavy ass stupid chrome wheels.
What clutch?
Also really heavy wheels,with really sticky tires aren't gonna allow wheelspin as easily as 16's.

.Mad Hatter.
06-24-2009, 03:41 PM
bob i dont know where youre getting your weight from, the sedan weighs less than 3300lbs WITH driver, without spare

bob12312357
06-24-2009, 04:00 PM
bob i dont know where youre getting your weight from, the sedan weighs less than 3300lbs WITH driver, without spare
The posters own weight from getting his car weighed at teh track + the estimated weight of an average adult male.[rolleyes]

.Mad Hatter.
06-24-2009, 04:07 PM
thats gotta be with him in the car, no? my car weighed in under 3300 with me in it, hes got a 12" sub and the spare in there too dont forget.

nagle10
06-24-2009, 04:22 PM
my car weighed in at 3200 on the dot with me in the car. no spare or anything in the trunk.

.Mad Hatter.
06-24-2009, 04:28 PM
i was actually surprised, i thought the weight was much more.

dcampana
06-24-2009, 04:28 PM
bob- i have the cm fx400 6 puck and lwfw... heavy ass 17" chrome wheels too...

no clutch slippage at all just no power. lol giac x chip, and exhaust...

bob12312357
06-24-2009, 04:31 PM
thats gotta be with him in the car, no? my car weighed in under 3300 with me in it, hes got a 12" sub and the spare in there too dont forget.
The pass side was heavier then the drivers side by a substantial amount. So I would say he was not in it. My car is a lil over 3400 with me in it and a half tank of gas on a cert scale near work.[evilmad]

bob12312357
06-24-2009, 04:33 PM
bob- i have the cm fx400 6 puck and lwfw... heavy ass 17" chrome wheels too...

no clutch slippage at all just no power. lol giac x chip, and exhaust...
Sick clutch. Your wheels are prob 2 heavy.

dcampana
06-24-2009, 04:52 PM
yeah. I wish I had a set of 17" celebrations or something.. that will be later...

fatjohnperf
06-24-2009, 05:10 PM
Just a quick question, what does all of this useless talk have to do with weight distribution and its effects on quarter mile times? If anyone has any real questions about performance, please feel free to contact me any time, I will be more than happy to help out.

dcampana
06-24-2009, 05:16 PM
well, these may not have to do with weight distribution, but all have to do with 1/4 mile times. rotational mass, ect...

these are questions that come up fromt he OP thread and instead of making "new" threads for each, still the same topic in reality...

right?

mike-2ptzero
06-24-2009, 06:37 PM
so hold WOT, have motor bounce off the rev limiter? then launch from there? i have done a few 5k launches and the damn car falls hard on its face. tried disconnecting the abs module too still no luck. the KO3 just sucks. lol. i hope to go to the track tonigh depending on my work load....

Your K03 must be dead, becasue you should be able to launch it hard at just 4k rpm. Even a girl named Jakie was able to pull a 1.8 60 ft with a K03. lol


Here is a video (http://www.a4mods.com/library/videos/track/mike2ptzero_launching_quattro.wmv) of me launching a B6 which has a GTRS elim kit, it still holds the quickest B6/ELim record of just under 12.7.

Lisent to the car if you can. If not here is a video (http://videos.streetfire.net/video/First-round-of-in-True-at_201467.htm)of me launching my car pulling 1.5's.

.Mad Hatter.
06-24-2009, 06:42 PM
Just a quick question, what does all of this useless talk have to do with weight distribution and its effects on quarter mile times? If anyone has any real questions about performance, please feel free to contact me any time, I will be more than happy to help out.


who the hell are you again?

mike-2ptzero
06-24-2009, 06:45 PM
who the hell are you again?

LOL, I guess nobody with a garage full of german cars.

dcampana
06-24-2009, 06:46 PM
^^ thanks Mike. I was not able to get out to the track today, so I will do my install on Friday. then should have some fun:) the KO3s has about 130k on it, so I would imagine its tired:) lmao...

those launches are mad crazy!!!

FrancoTheTanko
06-24-2009, 06:47 PM
so my first two runs I just dropped the clutch at 4k and 5krpm respectfully. The third I gave it more gas off the launch. Either way i got a 2.03 60ft and chirped the tires into 2nd, everything after that was cake.

I was not in my car when I weighed it, I weigh 170 so that would put it at 3527lbs! I wanted to point out how front heavy the car is also, i guess it doesn't matter too much for the quarter mile but i thought it was pretty interesting.

1.576 60ft! you are redonculous lol

.Mad Hatter.
06-24-2009, 06:59 PM
LOL, I guess nobody with a garage full of german cars.

his posts are random as HELL...i didnt think anybody did anything to offend him so much...

black99.5a4
06-24-2009, 07:17 PM
for what its worth, my car weighs 3540 with me in it and 3/4 tank of gas.. but i also have s4 interior.. i can tell ya the seats weigh a fucking ton more then my toss around A4 seats did.

good job on only weighing 33XX

dcampana
06-24-2009, 07:21 PM
his posts are random as HELL...i didnt think anybody did anything to offend him so much...

very true... came on yesterday. he is frinedlier than me, he has a friend on here, lol. [up]

FrancoTheTanko
06-24-2009, 08:36 PM
I don't understand how you can take +300lbs off this car without doing major modifications.

What I could have done:
spare -40
subwoofer/Caps -35
Amp -15
rear seats -?
empty gas tank -64

what else?

GetBoosted84
06-24-2009, 08:45 PM
I don't understand how you can take +300lbs off this car without doing major modifications.

What I could have done:
spare -40
subwoofer/Caps -35
Amp -15
rear seats -?
empty gas tank -64

what else?

Driver & Passenger? [>_<]

If you want to pull more weight out you could really get into it and start pulling things like:
* A/C & components
* Replace front seats with a lighter racing seats
* Sound deadening tar material
* Replace rims with lighter kosei's or BBS'
* Replace stock exhaust with an aftermarket one

There are other things you can lighten the car up with as well but then it will start to look like a track car (ie. removing the dash, carpet, seats, etc.).

Haenszel20v
06-24-2009, 08:47 PM
Yes, let me know how you're getting to 3300 w/driver and a full interior.

I don't know the real legit weight of these cars yet, but my title said 3700. That's 1550lbs more than my last platform.

mike-2ptzero
06-24-2009, 09:13 PM
Yes, let me know how you're getting to 3300 w/driver and a full interior.

I don't know the real legit weight of these cars yet, but my title said 3700. That's 1550lbs more than my last platform.

There is no way a B5 is going to be 3700 lbs, that has to be with 4 passengers. The B5 A4 1.8t curb weight is around 3250-3400 lbs. The S4 2.7's are closer to that 3600-3700 lbs.

My car was 2820 before the cage, it would be impossible to remove 900 lbs from our cars without fully gutting it out to bare metal.

nagle10
06-24-2009, 10:02 PM
when i went up to englishtown all i did was clean everything out of the car and took out the spare tire. didn't touch any seats or anything and when i went on the scale it said 3198 then 3202. i don't know that much about the options offered on our cars and how much that has to do with the weight but i don't have power seats or heated seats or anything like that. oh and its a 99.5

.Mad Hatter.
06-24-2009, 10:14 PM
ya im not understanding the mystery herem the wheels on my car are probably slightly lighter than stock, the spare was out, and that is it...i mean theres no cat, and the exhaust is stainless but how much weight is that going to save?

Haenszel20v
06-24-2009, 10:23 PM
Just a question.... never weighed a b5. Not difficult, really.

bob12312357
06-24-2009, 11:10 PM
ya im not understanding the mystery herem the wheels on my car are probably slightly lighter than stock, the spare was out, and that is it...i mean theres no cat, and the exhaust is stainless but how much weight is that going to save?
Ok,even expensive as hell super light weight rims are gonna save 20-30lbs off the total car weight. Whixh is negated if you get 17" or 18" rims due to the bigger heavier tire. The spare is about 15-20lbs. My exhaust is stainless and maybe 20lbs lighter then stock at most. What do you weigh? I just don't see a strapping guy such as yourself sitting in a car with a curb weight of 3300-3400+lbs and somehowing reducing the weight of the car...

bob12312357
06-24-2009, 11:13 PM
^^ thanks Mike. I was not able to get out to the track today, so I will do my install on Friday. then should have some fun:) the KO3s has about 130k on it, so I would imagine its tired:) lmao...

those launches are mad crazy!!!
You have a boost gauge? Theres also a good possibility if the anwser is no thay your leakin boost.

onemoremile
06-25-2009, 12:34 AM
Even my heavy Avant is only 3411 and that is with full interior, bike rack, and the 60 pound UUC steel lower brace.

http://www.audizine.com/gallery/data/500/1174IMG_1509.JPG

http://www.audizine.com/gallery/data/500/1174IMG_1508.JPG

.Mad Hatter.
06-25-2009, 07:14 AM
Ok,even expensive as hell super light weight rims are gonna save 20-30lbs off the total car weight. Whixh is negated if you get 17" or 18" rims due to the bigger heavier tire. The spare is about 15-20lbs. My exhaust is stainless and maybe 20lbs lighter then stock at most. What do you weigh? I just don't see a strapping guy such as yourself sitting in a car with a curb weight of 3300-3400+lbs and somehowing reducing the weight of the car...

stop sending me PMs calling me a dick, i didnt do anything but disagree with you, im not calling you out.

youre annoying the fuck out of me dude, if you dont think my car weghed what it weighed, cool.

lowandslow4now
06-25-2009, 07:30 AM
I weighed mine last year at waterfest and with 3/4 tank of gas, no spare, 18's, a catback exhaust and full interior with my 220lbs self. My car weighed in at 2290 on there scale. It is also a 97 quattro non power seats if that makes a difference.

.Mad Hatter.
06-25-2009, 07:40 AM
ya not sure if seats matter or not, mine are non power sport cloth...imagine how much a non sunroof car would weigh...

wait, 2290? how did you manage to shave 1000lbs off...typo?

lowandslow4now
06-25-2009, 07:47 AM
Sorry typo I meant 3290lbs

.Mad Hatter.
06-25-2009, 07:57 AM
haha that makes more sense then.