Eric_Oz_S2

The 550 R is equivalent to about 230 wheel rate - you are running about the same rates as me.

Eric_Oz_S2

I was leaning towards the KW clubsport - have you considered going that way?

Techno Duck

I think the KW V3 is a great coil over for the street that is track capable. It is a good compromise setup. Ive had them on my car for a few years and have been quite satisfied. They are however not exactly in the budget price range at ~$2700.

I was a long time Koni user and they are probably the best budget setup around. I never liked how harsh they were over bumps though even with the compression on full soft. Even with stock springs they were very harsh over bumps. I would honestly say my current setup of the KW V3, RE camber plates and spherical bushings still takes bumps in the road better than the Koni yellow with stock springs and rubber bushings ever did.

For the price of the Ground Control coil overs, i would also consider the proven Bilstien Firehawk setup. It is not full coil over in the rear.. but honestly the need for a full coil over in the rear is debatable i think, especially a street car that sees some track use. Ive never ridden in a Firehawk setup but have in an Escort Cup equipped car. I think with the right spring rates and valving the Firehawk might be a viable option.

Josh B

My 968 is running the Bilstein Escort coil overs all the way around with 550lb front and 350lb rear on stock torsion bars and 28/22mm welt sways. 265 rear and 235 / 18 front tires. Car felt great on the track for a group two driver.

924S is running Konis with 250lb front and 30mm torsion rear and 968 m030 sways. 225 slicks all the way around on 7s and weight of 2505lb. Handled superbly on Road Atlanta

Droops83

Buy my rear torsion bars, they are the basis of a great setup!

In all seriousness, the setup that you describe sounds like a good compromise setup. It will be decent on track but compliant enough to daily drive and carry passengers without complaint. For serious track use I'd go stiffer, which means coilovers.

I would recommend Racer's Edge delrin bushings all around regardless of your final setup. I use their front and rear control arm bushings, and they really help to reduce squirm and hold your alignment settings on track much better than stock. I hear the Powerflex bushings are also good. Go solid if you want a more hardcore setup, though they are expensive and eventually wear out.

I have the Ground Control rear coilovers and I like them. The are quality pieces and come with beefy rear lower mounts. The cost is very reasonable as well.

I removed the rear torsion bars and run 650# rear springs, which is about as stiff as I'd want to go without a double shear lower mount. I use Elephant Polybronze rear spring plate bearings, which are great as long as you grease them normally.

I believe the Koni shocks that are used in the GC kit are 30 series, same as the Paragon kit. There are only 4 different rebound settings, and each position feels significantly different, so you don't need a full engineering team to help with setup. The rebound is adjusted by holding down a button under the dust cover and rotating the shock rod:

http://www.koni-na.com/adjustment.cfm

This can be done without removing the entire coilover; only the lower mounting bolt needs to be removed. Be sure to torque it to spec after reinstalling, and periodically check the torque of the lower rear mount in the control arm.

I plan on getting double-adjustable front struts from Ground Control when I can, as the compression damping of the current off the shelf Koni yellow inserts is too soft for my liking. At that time I will play around with front spring rates. I use 400# front springs, which is about as stiff as I'd want to go with the yellows.

refresh951

A lot of great input! Thanks! I think my plan is to go with bigger torsion bars, the front coilover kit from Paragon, racers edge bushings, and lower the car a bit (0.5" to 0.75"). I am thinking somewhere around 300-325 for the front springs as I plan on 2 DE's per year and most of my driving is on the street.

divil

I'm very curious to hear how it works out - is that coming from stock springs/torsion bars? I have a similar goal (although I plan on a lot more track driving). I was leaning more towards 220-250lbs but that was really just a guess based on what I've read. How bad are the roads there - and does that affect your decision?

User 52121

I might be interested. These are the bigger TBs?

Want a stiffer set for my Lemons car. What are you looking to get for 'em?

Dutch944

So basically a ground control system all around with 300's-325's on front and 500-550's at the back with TB's removed would get about the same feeling?

This will probably be my setup; already have the elephant racing bronze bushing's..

cruise98

Dutch944: Not sure what you mean by the same feeling, but I have the ER polybronze spring plate bushings too. I went with the TB delete because I NEVER want to re-index the torsion bars again. BTDT. If you go with the GC's, be sure they know it is a street car or you will get short inserts and the car will be so low you cannot drive it.

zeusrotty

I actually have a set of KW V3' with very low miles on them. I am looking to upgrade next month if anyone is interested. Literally less than 2000 miles. I want a racier setup.

Richgreenster

How Much?

PEvans

As I read these threads, it seems like a central question is whether or not to change the rear suspension to coilover only, removing the torsion bar. It appears you plan to replace the torsion bar and go without coilovers for the rear. I guess a third configuration option would be to use coilovers with helper springs along with a torsion bar.

No argument, but how did you decide for your use?

zeusrotty

I think I'm going to ask $1800

But it won't be until next month when I get my bonus.

JustinL

I have bilstein escort with solid heim joints. They are fine on track, but are incredibly harsh on the street. I'm going to switch them out sometime to something more tolerable. Considering having the stock front M030 revalved and finding some rear coilovers.