Non-PP GT Suspension

[yessirrom]

I have a non-pp GT. I tend to do high speed runs on some country roads. I find that I get a lot of float when I am going over bumps or elevation changes.

I cannot afford to purchase springs and sway bars together right now. My questions are these:

1. Are springs the cure for this "float"?
2. Sway bars on my stock suspension would do what?
3. Do I need to worry about lowering my car with springs if I am traversing some fairly rough roads at speed?

Thanks in advance for your advice......

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[Jeepwx03]

I would think the float is from going to fast over the change in road elevation. Suspension probably won't help that at all. Maybe and adjustable front and rear spoiler to increase down force, but you may have issues with a front spoiler hitting the road if they are that rough. Maybe I'm just misunderstanding the question though

 

[yessirrom]

I do not expect to eliminate the bounce but I would like to reduce it. The roads are paved but often have some depressions and some rippling. Not really dukes of hazard driving conditions. I don't think aerodynamic tweaks are going to help. I want to tighten it up and have it respond or recover more quickly.

 

[Chameleon]

I would think the float is from going to fast over the change in road elevation.

The base rear does bounce a bit in general. Springs help big time with this OP.

 

[Chargedguard5.0]

I have a performance package and it had some float as well. changing the springs will make a big difference.

 

[Art_Boy]

I have a GT (non PP) and feels floaty to me going down the highway. Probably use to my stiff 4x4 suspension. Also, have some Eibach springs on my '90 Eclipse which have worked well over the years. I ordered an Eibach pro spring kit from CJ's since I had a promotion gift certificate from them. Was also looking at Steeda springs but could not justify the extra cost since only a weekend driver for me (no track use planned at this time). Hope to get them installed when it warms up.

 

[Chameleon]

Art boy you will be happy with the change.


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[wproctor411]

I have a non-pp GT. I tend to do high speed runs on some country roads. I find that I get a lot of float when I am going over bumps or elevation changes.

I cannot afford to purchase springs and sway bars together right now. My questions are these:

1. Are springs the cure for this "float"?
2. Sway bars on my stock suspension would do what?
3. Do I need to worry about lowering my car with springs if I am traversing some fairly rough roads at speed?

Thanks in advance for your advice......

The stiffer springs might open your eyes as you feel how dangerous the country roads can be. Only drive fast on smooth surfaces. It only takes one good bump to toss a car off the road at high speed. Fence rows, ditches and trees suck.

 

[yessirrom]

I may have exaggerated when I said high speed. Not doing track pace or anything. I am just used to a lighter vehicle and the suspension does not feel tight to me. As I said,kind of floaty.

 

[aggieStang]

I may have exaggerated when I said high speed. Not doing track pace or anything. I am just used to a lighter vehicle and the suspension does not feel tight to me. As I said,kind of floaty.

I know what you mean. Theres some roads down here in south Texas with some nice curves and starights. It used to be a highway but now the have the limit set to 35. Its a bit rough, but can be safely traversed at about 60. Nothing breakneck, but fun. I am looking for something similar for my non-pp gt. Just an upgrade to stock but nothing lower.

 

[Norm Peterson]

I may have exaggerated when I said high speed. Not doing track pace or anything. I am just used to a lighter vehicle and the suspension does not feel tight to me. As I said,kind of floaty.

Think shocks and struts instead - rebound-adjustable if at all possible (and worth the wait otherwise). More rebound damping from a performance-oriented set of dampers is what it sounds like you really need here - that's what slows down the springs when they recover from being compressed even slightly, and keeps them from noticeably overshooting. Adjustable dampers will let you find your best balance between control over that floatiness and unnecessary firmness.


I've only done a couple of really minor things to my '08 GT beyond adjustable shocks, struts, and stabilizer bars, but I've received several comments from instructors and track corner workers regarding my car's composure at track pace. Dial the dampers back at the end of the day and it's an equally composed and fully livable daily driver for the ride home and the rest of the normal driving uses.


Norm

 

[Whiskey11]

Think shocks and struts instead - rebound-adjustable if at all possible (and worth the wait otherwise). More rebound damping from a performance-oriented set of dampers is what it sounds like you really need here - that's what slows down the springs when they recover from being compressed even slightly, and keeps them from noticeably overshooting. Adjustable dampers will let you find your best balance between control over that floatiness and unnecessary firmness.


I've only done a couple of really minor things to my '08 GT beyond adjustable shocks, struts, and stabilizer bars, but I've received several comments from instructors and track corner workers regarding my car's composure at track pace. Dial the dampers back at the end of the day and it's an equally composed and fully livable daily driver for the ride home and the rest of the normal driving uses.


Norm

What this guy says. Stiffer springs and swaybars will most likely make the float worse because the shocks/struts are working harder with less force to slow a stiffer spring down to it's equilibrium.

Swap out the shocks/struts, even on the PP cars, and I suspect that you'll find more composure in the car then you knew existed. The nicer the dampers, the better your tire stays to the ground too.

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