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What are your Ground Control Spring rates ?

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Old 06-19-2014, 11:11 AM   #476
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Default Re: What are your Ground Control Spring rates ?

I am actually running rates similar to that now 650/450 (IIRC) It understeers like a pig heavy pig with my SI bar hooked up.

Going to be dropping the rates in front though.
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Old 06-19-2014, 11:20 AM   #477
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Default Re: What are your Ground Control Spring rates ?

mine feels pretty neutral, running with gsr front and rear sway bars
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Old 06-19-2014, 03:36 PM   #478
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Default Re: What are your Ground Control Spring rates ?

I don't have anything to compare to, but I too have a similar setup (though more mild). I can still get the car into subtle oversteer with the throttle-lift on corner entry. It's fun and safe and the angle is completely adjustable by throttle input. I've never actually drove the car *****-out though.

94 CX
Springs: 400 F, 250 R (GC Top hats on the front)
Sways: 24mm F, 14mm R
Shocks: Koni Yellow (set 3/4 F&R from full stiff I think)
Camber: -2.25*f -1.5*r (completely stock arms w/ no camber adjustment)
Toe: 0.0mm F, +2mm R (set myself with an accuracy of +/-0.3mm)
Tires: RT615 205/40-16
Ride Height: 1-finger gap front & rear (held perpendicular to the ground)
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Old 06-21-2014, 04:24 PM   #479
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Default Re: What are your Ground Control Spring rates ?

I run 430lb front and 400lb rear on my ej1 with extended top hats all around. IMO it's the perfect setup for a spirited daily driver/weekend warrior/occasional autox.
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Old 08-17-2014, 02:21 PM   #480
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Default Re: What are your Ground Control Spring rates ?

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Originally Posted by redDAinteg View Post
Im just interested in knowing what spring rates you guys have on your set-up with ground controls and also I want to know your feedback on how good it handles/feels/comfort.

The rates I have on GC's are 380front and 340rear. They are 8" springs which I think would be better if they were 6" springs so I wouldn't have to compress them to raise the car up. Also this is with Koni's. It feels softer compared to my H&R race springs but much more daily drivable IMO.
How is the ride of ur car with that set up? I am about to purchase that same exact spring rate nd i figured id ask yu how they are first.
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Old 08-18-2014, 05:07 PM   #481
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Default Re: What are your Ground Control Spring rates ?

500f 450r with a Mugen 26th rear sway bar

Front and rear height adjusted to 1/2-3/4" difference to tune out the understeer.
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Old 08-18-2014, 07:11 PM   #482
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I have 500f 600r on 98 coupe. Daily it super stiff. Autox regularly and has made a little faster. Hard for me to gauge as shocks were so bad before. I have no sway bars currently and feel like I have it up to high going to lower next season. Running 15x8 with 225 45 15 rivals.
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Old 12-29-2014, 09:04 PM   #483
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Default Re: What are your Ground Control Spring rates ?

450f 525r, eg hatch, koni yellows, Ground Control coilover springs. Bridgestone re-11 tires.

been like this for 4 years. front is ok for street. rear is too stiff for street. its ok until you hit a pot hole or bump. Ive broken the rear hatch lock twice because of this. On the track 450f is terrible. Way too soft leading to lost time in the corners. But I must say, these shocks are super durable. I have pounded the rears time and time again on major bumps. Like, Ive slammed them real hard many times. Not a whimper from the shocks or springs, they still work like new. Although I can't say the same for the finish, most of the yellow on the struts has turned to an ugly brown rust colour.

I'm about to re-valve go 800 front and rear, or some variation on that, for some more serious time attack stuff/ dedicated racer. The stiff street car thing gets old after a while! And so does going slow at the track.

If anyone can comment on their preference between 700-900lbs, and rear bias vs neutral at these levels for road racing it would be helpful. Also, sway bar(s) for 800-ish lbs? Or save the weight and go sway-less?

Last edited by the171; 12-29-2014 at 09:53 PM.
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