Author Topic: GC coilover conversion kit (Read 5866 times)

gundy318 · « **on:** March 31, 2007, 09:03:52 AM »

Anyone know much about these ground-control kits? They have Eibach springs and ride hide adjustability and can be used with stock shocks for $399. any opinions?

http://www.ground-control-store.com/products/description.php/II=121/CA=98

BrandC · « **Reply #1 on:** April 01, 2007, 06:03:39 AM »

These are pretty much the most commonly used brand coilover for E30's. You are in good shape and most people will vouch for GC quality. However, on R3vLimited there is also a company called C3 Motorsports selling a similar/better kit.

gundy318 · « **Reply #2 on:** April 01, 2007, 11:06:16 AM »

alright thanks, whats your opinion on using them with stock shocks?

e9nine · « **Reply #3 on:** April 01, 2007, 11:30:06 AM »

Quote from: gundy318;22627

alright thanks, whats your opinion on using them with stock shocks?

Don't waste your time with stock shocks. Get Bilstein Sports or Konis SAs.

2002maniac · « **Reply #4 on:** April 01, 2007, 09:39:05 PM »

Quote from: gundy318;22627

alright thanks, whats your opinion on using them with stock shocks?

not a chance. They will blow FAST.

I have a GC setup with bils sports on my car. I like it.

D. Clay · « **Reply #5 on:** April 01, 2007, 11:01:01 PM »

The shocks depend on the spring rates you pick. I feel it is a matter of quality instead of shock rates. OEM shocks that are 18 to 20 years old aren't right for any spring. If you are using less than 165# front springs go Bilstein Touring. If you're going stiffer use HD's.

gundy318 · « **Reply #6 on:** April 02, 2007, 10:00:48 AM »

thanks guys, guess im just gonna have to save a while longer.

2002maniac · « **Reply #7 on:** April 02, 2007, 12:31:04 PM »

Quote from: gundy318;22705

thanks guys, guess im just gonna have to save a while longer.

Just wait, it will be worth it.

DZick · « **Reply #8 on:** April 04, 2007, 07:03:30 PM »

I just went with the C3Motorsport coilovers and they are awesome. coming rom a stock suspension with every shock blown to that is amasing.

They have a GB on R3V if u wanted to chek that out.

jajou318 · « **Reply #9 on:** April 09, 2007, 08:42:33 AM »

Hey I already have Koni SA's can I just get this kit and that would be all I need for a coilover setup?

silverblades181 · « **Reply #10 on:** April 09, 2007, 11:54:19 AM »

Quote from: jajou318;23278

Hey I already have Koni SA's can I just get this kit and that would be all I need for a coilover setup?

It depends what rate you choose. I don't know up to what rate the Koni SAs can take but they might need to be revalved if you go too stiff. I know you can get Bilsteins revalved for something like 50$ a shock...which is cheaper then getting the J-Stock shocks from Turner which are valved for springs up to 800lbs.

e9nine · « **Reply #11 on:** April 09, 2007, 12:22:33 PM »

Quote from: silverblades181;23299

It depends what rate you choose. I don't know up to what rate the Koni SAs can take but they might need to be revalved if you go too stiff. I know you can get Bilsteins revalved for something like 50$ a shock...which is cheaper then getting the J-Stock shocks from Turner which are valved for springs up to 800lbs.

I have run OTS Konis with up to 800# in the rear.
People have run OTS Bilsteins with the same rate.

If you're not competing and attending track events up the wazoo they can work. However, all disclaimers apply as road conditions, perception of "harsh ride", understanding of the word "trade off" etc all vary across the board

A J-stock kit is purposely built for that class so it's not always going to allow you to apply friendly economics into the intended purchase equation.