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It appears I need some suspension help.

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Old May 3, 2008 | 06:59 PM
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Default It appears I need some suspension help.

Long story short I ran a 11.03 @ 130mph in a A4. 1.71 60'. The car has a UMI T/A, adjustable LCA removed the front swaybar, had the pinion angle at -2 degrees, and had stock rear springs in it with the isolators in them.

When the car launches the car will squat on the right rear hard, making the front and rear tires of the drivers side appear to raise, if you can imagine what I am saying here.

I was suggested an anti-roll bar, air bag for the right rear, V6 rear springs, and of course QA1's. The car simply does not launch straight, and I know it's killing my 60' times.

Thanks for any help.

Mods in sig if curious.
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Old May 3, 2008 | 07:19 PM
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back end shouldent squat....airbags will halp if you can afford shocks.swaybar...
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Old May 3, 2008 | 07:52 PM
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What tires? Is it spinning?

I've seen guys run 1.5x short times with stock suspension, what you have should work. My car went 1.53 with the stock rear sway bar, so you should be fine. You can try the airbags, they are cheap anyway. I've used them in several cars.

QA1's are by far the best suspension mod for helping short times.
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Old May 3, 2008 | 08:16 PM
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M/T ET streets. Yes it was spinning. I was hitting a 200 shot off the line.
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Old May 3, 2008 | 08:30 PM
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1 word, MADMAN
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Old May 3, 2008 | 09:21 PM
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I would start with the QA1 rears. Set the pass. side a little stiffer. Your stock springs should be fine.
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Old May 3, 2008 | 09:25 PM
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you need a good drag race anti-roll bar.
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Old May 4, 2008 | 02:31 AM
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Originally Posted by 9sec93
you need a good drag race anti-roll bar.
what he said, and then shocks.
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Old May 4, 2008 | 03:05 AM
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Originally Posted by wolfy
what he said, and then shocks.

Agreed, drag sway bar and coil overs and you will see a world of difference.

I would never run factory springs in a built car and have heard to many bad things about V6 springs making problems like yours worse.

With no sway bar in the back of my car and factory shocks but everything else aftermarket the car went dead straight with 1.6 60 footers (bottle) and it was squating evenly. Swaped in QA1 shocks last summer and adjusted halfway to full stiff it barley squated at all still with no rear bar.


Going with a weld in bar and AFCO double adj's now.........
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Old May 4, 2008 | 03:58 AM
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If the car is a full track car or mostly a track car, I would go ahead and do the anti-roll bar. If it's mostly a street car with some track time, I would start with the QA1's and go from there. If you're on a tight budget, go with some CE shocks and an airbag.
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Old May 4, 2008 | 07:44 AM
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nice mph though! if you could get that 60' down in the 1.4's, which shouldnt be too hard, you should go 10.50's
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Old May 4, 2008 | 08:40 AM
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Originally Posted by Captain InsaneO
I was suggested an anti-roll bar, air bag for the right rear, V6 rear springs, and of course QA1's. The car simply does not launch straight, and I know it's killing my 60' times.
I have had good results with larger diameter bolt-in sway bars, QA1's, right rear air bag, and stock V8 springs from LT1 Formulas. If you run a softer rear spring your problems will multiply. Your mph indicates that you have the potential to go pretty fast, you are ready for a cage (which will also help your launch).

Take Care,

Daren
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Old May 4, 2008 | 09:53 AM
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Originally Posted by GIZMO
Your mph indicates that you have the potential to go pretty fast, you are ready for a cage (which will also help your launch).

Take Care,

Daren
He had better already have something in there - running 11.0.

You need to spend some time and money on the rear suspension.

-- QA1 (or better)
-- Rear drag bar

Best suggestion was to call MadMan - one of our great sponsors. He'll hook you up with the best available.

Low 10s -- maybe just maybe 9's -- are not out of the question with the correct rear and front suspension

David
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Old May 4, 2008 | 01:14 PM
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anti roll bar in the rear a good one. if you need a set of air bags let me know, have a new set.
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Old May 4, 2008 | 11:46 PM
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With 130 mph it should go low 10's easy. Get an anti roll bar 1st, then shocks. If you have a good anti roll bar and preload it there is no reason for air bags.
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Old May 5, 2008 | 05:40 AM
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Originally Posted by RAGENZ28
If you have a good anti roll bar and preload it there is no reason for air bags.
An air bag is still a great way to adjust preload at the track. Especially if you have to "hot lap".
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Old May 5, 2008 | 06:32 AM
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Originally Posted by GIZMO
An air bag is still a great way to adjust preload at the track. Especially if you have to "hot lap".
Not if you have the correct drag anti-roll bar. If you can't afford an the bar than go with the air bag.

David
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Old May 5, 2008 | 09:05 AM
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Don't do rear V6 springs, I did that a long time ago and the car squats too much. I would only do rear V6 springs in a drag radial car that was on a budget that was not getting drag shocks.

That being said, I'd run drag shocks in back, and a BMR rear drag bar. I run that bar in the Camaro, leaves dead even. I have the Spohn in my Formula, leaves perfectly even too. The Camaro still has 3 position CE's in back, set to 50/50. Once I rebuild my rear QA1's they will go back on, I like to run the rears stiffer than 50/50.
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Old May 5, 2008 | 10:00 AM
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Originally Posted by Navy David SS
He had better already have something in there - running 11.0.

You need to spend some time and money on the rear suspension.

-- QA1 (or better)
-- Rear drag bar

Best suggestion was to call MadMan - one of our great sponsors. He'll hook you up with the best available.

Low 10s -- maybe just maybe 9's -- are not out of the question with the correct rear and front suspension

David
I think the guy needs a Black Hood and Tinted Windows also.

Some of the fastest cars posting and running here have Black Hoods, right?

He needs tinted windows because at some point, it's even been point out prior to today, the guy should have addressed his suspension. Tinted Glass will hide who he is.

The right rear lowers and the drivers wheel pulls up because the engine, when it runs TURNS to the right or the left? This is sort of basic isn't it?

Is it possible some of the younger racers have added hp to the cars on several games they have and never addresses the suspension?


Jakes Dad
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Old May 5, 2008 | 12:06 PM
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Ditto on what PSJ said, v-6 springs are lighter spring rate and car will squat even more.
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