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  #1 (permalink)  
Old 05-22-2008, 07:39 PM
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What Order To Do Suspension Mods

Having searched the forum, I've read discussions of swaybars, springs, and increasing negative camber. My application is primarily street with maybe 8 or 10 track days a year. If you made just one mod at a time, which should be done first? Which mod gives the most benefit/$?
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Old 05-22-2008, 09:07 PM
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Decreasing camber is most cost effective because of what you'll save in tires. You'll also see the most dramatic change in the car if you can get enough, eg, camber plates or control arms. Then sways, then springs.
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Old 05-23-2008, 02:33 AM
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1. Proper alignment
2. Stiff sway bars
3. Camber plates
4. Coil overs
5. Heim joints
6. GT3 control arms
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Old 05-24-2008, 05:31 AM
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Coilovers and an alignment. I doubt you'd ever need more than that.

The only reason I'd get swaybars is to upgrade to adjustable ones. Swaybars should be used for fine tuning, not chassis stiffening.
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Old 05-24-2008, 07:25 PM
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Part of the answer depends on what you pay for an alignment. Each one of the modifications mentioned requires the car to be realigned, so you making a couple of changes at a time can save some money.

Increasing camber will get you the most benefit (primarily better tire wear), so the GT3 adjustable control arms would be my first (and maybe only) change. Next would be adjustable sway bars, so that you can tune the handling.

Cheers,
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Old 05-24-2008, 08:11 PM
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Okay, time to agree to disagree....

A lot of pro tuning shops like Turner, etc., strongly recommend springs/shocks before sway bars. I think the logic is that it's possible to overstrain sway bars if you basically ask them to do the work of stiffer springs and shocks in a floppy suspension. This might not be the case with P-Cars in general, as excessive body roll in stock trim is not really a concern in modern examples.

I agree that dialing in as much neg camber as possible without actual camber plates is a cheap and easy tune that will yield big. But next I'd do shocks. My car was completely transformed by fitting a set of non-adjustable Bilstein sports, yet the ride height stayed the same and the ride comfort was virtually identical. Can't say that if you go and fit a set of sport or race springs, or coilovers....big difference.

As is always the case, everyone should think long and hard before making changes. The stock set up is very sweet on these cars. And remember, once you start messing you may make the car ineligible for certain events and classes, either in SCCA, PCA, COM, NASA, etc. However, you can make carefully selected upgrades and still stay in "stock" classes with these groups, but read the rules carefully first. In a nutshell, shocks and exhaust are typically free, but springs and camberplates are a big no-no...unless you really want to play in the big buck arena of "prepared" classes. Cost aside, to run with the Big Dogs in these classes you'll need to go all out and your once lovely street car will be almost undrivable on public roads.
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Old 05-25-2008, 04:02 AM
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Excellent advice here.
A#1: Negative camber really helps with excessive tire wear and understeer -

I'm also a fan of brake pads that last much much longer than the average (and ridiculously low) 2.5 days: the OEM pads. And have a ton more friction.

8-10 days per year? Pads.
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