Suspension Performance and Stance Thread

[TwistedD85]

I've been searching but I haven't come across a thread for such a thing, other than the tire and wheel thread. I don't have anything to contribute at the moment myself, but here's the format. And if I've forgotten anything please feel free to add a category. And including a picture of the overall setup would be helpful.

Behavior: (Tail-happy, over steer, under steer, etc.)
Comfort:
Wheels:
Tires:
Shocks/Struts:
Springs:
Sway Bars: Front ___ mm / Rear ___ mm
Sway Bar Bushing: (Material) Front / Rear
Subframe:
Subframe Bushings: (Material)

And if you're capable of it.

Caster: Front / Rear
Camber: Front / Rear
Toe: Front / Rear
Ride Height: Front / Rear
Misc: (Anything that may affect your ride and responsiveness, end links, weight savings, various bushings, etc.)

:thankyou:





Easy edited quotable version sans extra text.

Behavior:
Comfort:
Wheels:
Tires:
Shocks/Struts:
Springs:
Sway Bars: Front ___ mm / Rear ___ mm
Sway Bar Bushing:
Subframe:
Subframe Bushings:
Caster: Front / Rear
Camber: Front / Rear
Toe: Front / Rear
Ride Height: Front / Rear
Misc:

 

[TwistedD85]

I'm also curious if to anyone has lowered their SHO and kept it level, I mostly see raked SHOs.

 

[kevinspann]

Behavior: Tail happy when pushed (especially in cold on summer tires)
Comfort: 6/10
Wheels: 17x7.5
Tires: 235/45/17 Fuzion ZRi
Shocks/Struts: Sensatracs
Springs: Eibachs -1 coil in the front, uncut rear
Sway Bars: Front 20.6 mm / Rear 26 mm
Sway Bar Bushing: Rubber front, TPR rear
Subframe: Gen 3
Subframe Bushings: Gen 3
Caster: Front / Rear - Dunno
Camber: Front / Rear - wrong
Toe: Front / Rear - f-ed
Ride Height: Front / Rear ?
Misc: Going to put a 24 front back on it, possibly with Koni's in the future. May go to a different spring since my Eibachs are rusty. Needs alignment as well, that isn't helping for sure.

 

[zach44102]

Behavior: understear on tight corners at low speeds. Tail happy at high speeds
Comfort:5/10
Wheels: slicers
Tires: 225/55/16 Bridgestone Potenza RE760's
Shocks/Struts: Koni
Springs: Intrax -1 coil in the front
Sway Bars: Front 20.6mm / Rear 26mm
Sway Bar Bushing: (TPR) Front / Rear
Subframe: G2
Subframe Bushings: ALSFB

And if you're capable of it.

Caster: 4.3 / 4.0
Camber: -1.7 / -2.0
Toe: 0 / 0
Ride Height: Not low enough
Misc: the car is LIGHT, It has Subframe connectors, H brace, adjustable rear arms, adjustable front mounts.

 

[intimdatr]

I'm also curious if to anyone has lowered their SHO and kept it level, I mostly see raked SHOs.

I have! And i really like the way it sits. Seams to handle really pretty well. I havent pushed it TO far yet in the cold but it really seams to be very stable in higher speed conners and little bit for pushy in lower tighter corners. (might be from shot sway bar bushings and other various wear items) If you like i can get pictures of how it sits.

Heres my current setup. Cant seam to find the last alignment sheet...

Behavior: Under steer followed by bad tail wagging past 75ish. (havent tested in the summer)
Comfort: 4/10
Wheels:16x6
Tires:225-55-16's Khumo ASX's
Shocks/Struts: NOS
Springs:moog -.5 at all corners.
Sway Bars: Stock for 92's
Sway Bar Bushing: SHOT stockers with 160k on them
Sway Bar End links: New Ingalls in the front and Stockers in the rear.
Subframe: G2
Subframe Bushings: G3
Misc: New LCA's and moogs with about a 1k miles on them.

 

[Bob Gervais]

Behavior:Neutral to slight understeer
Comfort:10/10
Wheels:17x7 MSR 190
Tires:225-50-17 Kumho ASX
Shocks/Struts:Tokico
Springs:Front, Eibach. Rear, stock.
Sway Bars: Front-Gen 3 22mm / Rear- 23mm
Sway Bar Bushing: Enegry Suspension Poly.
Subframe: Stock
Subframe Bushings: Gen 3

Don't have the alignment sheet, but from memory:

Caster: 4.0
Camber: -1.2ish front, -1.0ish rear
Toe: idfk.


Misc: Entire front end was rebuilt last year. New LCAs, bushings, endlinks, tie rods, etc. It still sucks. G3 subframe coming soon. Ingalls adjustable RCAs (great product). Also planning on a 26mm RSB, SFCs, and Intrax or B&G springs in a few months.

Also, I don't have measurements on ride height, but it does sit level. I achieved this purposely with uncut Eibach front springs, and stock rear springs.

 

[SHOspazz92]

• Behavior: Sharp turn in with oversteer if you are not smooth with throttle inputs. NO UNDERSTEER.
• Comfort: Not to bad, depends on the road surface.
• Wheels: 17x8 TSW Hockenheim R (Street)
• Tires: 245/40/17 Dunlop Direzza Starspec Z1 (Street)
• Shocks/Struts: Koni Yellows with Ground Control Coilover sleeves.
• Springs: Eibach 8'' Springs, 500lb (Front), Eibach 10'' Spring, 430lb (Rear)
• Sway Bars: Front 19.5mm / Rear 26 mm
• Sway Bar Bushing: Poly.
• Subframe: Gen III with Gen II Rack.
• Subframe Bushings: ALSFB.
• Caster: Max Caster.
• Camber: 2.6* Front, 1.75* rear.
• Toe: 0 Toe front and rear.

Misc:

Has a Quaife and weight reduction.

 

[Shoaz]

When it was running:

Behavior: Overall neutral. Slight oversteer on fast corners.
Comfort: 3/10
Wheels: 16x8
Tires: Hoosier R6
Shocks/Struts: Koni yellow, shortened in the front and revalved everywhere.
Springs: 500/600 lbs/in frt/rr
Sway Bars: Front 19 or 20.6 mm / Rear 23 mm
Sway Bar Bushing: (Material) Front / Rear - both stock.
Subframe: Stock.
Subframe Bushings: (Material) GenIII rear.

Caster: Front / Rear - max/max
Camber: Front / Rear -3.5/-2.5
Toe: Front / Rear 0/0
Ride Height: Front / Rear Measured how?
Misc: Corner weighted 50/50 diagonally.

Edit: Had a quaife, but probably didn't need it much after the rear spring rates were raised from 350 to 600 lbs/in.

 

[Shoaz]

Double post.

 

[AREA 91]

You should also include if you have a quaife or wave trac installed, as this changes the behavior of the car.

 

[94shodriver]

Behavior: Once warmed up, neutral to moderate understeer
Comfort: 7/10
Wheels: 16 x 7 ASR ?
Tires: 225/50-16 Dirreza Star Specs
Shocks/Struts: Koni yellow
Springs: Eibach
Sway Bars: Front 22 mm / Rear 26 mm
Sway Bar Bushing: Polyurethane
Subframe: G3 w/ G2 steering rack
Subframe Bushings: Aluminum
Caster: Front 3.7-8 / Rear -
Camber: Front 1.2 / Rear 1.5
Toe: Front 0 / Rear 0.1 in
Ride Height: Front 0-.5" lower / Rear 0-.5" lower
Misc: Quaife. On the street I set the rear struts to full soft and the front struts to 1/4 hard (half turn up from soft), on the track I set the fronts to full hard and the backs to 3/4 hard. Haven't played with this as much as I should.

The car also has subframe connectors and a rear strut tower brace. These went a long way towards improving the ride and handling.

If it was more of a track car and less of a highway cruiser that my wife also occasionally drives (too aggressively), I would go down to a 20.6mm front sway bar and dial in a lot more camber up front. I would probably also go with coilovers at some point too. And bigger brakes, and larger cams, and... well you get the point.

Hope this helps.

 

[yamahaSHO]

Behavior: Controllable over-steer
Comfort: Firm, but dampening
Wheels: Kazera KZ-U - 17 x 7"
Tires: Nitto NT-555 - 235/45/17
Shocks/Struts: Koni (Front 2 clicks from full stiff / Rear full stiff)
Springs: Intrax (1 dead coil cut up front)
Sway Bars: Front 22 mm / Rear 26 mm
Sway Bar Bushing: Front - Poly / Rear TPR
Subframe: Stock
Subframe Bushings: - Aluminum
Quaife: Yes

Caster: Front / Rear - Will have to find the paper work
Camber: Front / Rear - Will have to find the paper work
Toe: Front / Rear - 0/0
Ride Height: Front / Rear - How are you measuring it? Center of wheel/hub to fender?

Misc: Adjustable rear lateral links, TPR bushings throughout, Sub Frame Connectors, Police strut mounts, heavy duty endlinks (F/R), shimmed power steering rack.



Will update below as the suspension is getting a full rework over Winter.

Behavior:
Comfort:
Wheels: CCW Classics - 17 x 8.5"
Tires: Dunlop Direzza Star Spec - 245/45/17
Shocks/Struts: SHO Source Coilovers
Springs: SHO Source Coilovers
Sway Bars: Front 22 mm / Rear 26 mm
Sway Bar Bushing: Poly
Subframe: Gen3
Subframe Bushings: Aluminum
Quaife: Yes

Caster: Front / Rear
Camber: Front / Rear
Toe: Front / Rear
Ride Height: Front / Rear

Misc:

 

[Shoaz]

BTW, on a lot of cars, especially with an open diff, disconnecting or removing the front bar altogether is a good option if you have reasonably stiff front springs. The only reason I put a soft front bar on the Pumpkin was because it'd cost me classing points if I didn't and the cage raised the center of gravity enough that I needed it to tame the roll down a bit. My silver car had the coilovers on it before the Pumpkin did and I ran that with an open diff and no front bars on track for a long time. Worked slick, and I bet with the stiffer rear springs you may not need a Quaife at all.

 

[TwistedD85]

Sorry about the ride height thing, honestly I figured it was something that everyone knew more about than me so I included it I'm not exactly sure how to measure it myself, I figured it was either that or a picture expressing how high or low your SHO rode.

 

[K-Dawg]

Ride height should be measured from fender to center of hub, IMO.