Spring Rates - Track / Autocross
 

So I haven't seen a dedicated thread yet so I wanted to start one.

Basically I'll be switching over to coilovers in the next month or so and wanted to see what you guys are running for rates for track/autocross use. I think I saw that RCE was running 400/400 but I was wondering what others were running. Also include sway bar setup (stock, aftermarket, just one aftermarket, stock removed from one end, etc).

This is for a DD/HPDE car but I've run very high spring rates on the street so I'm not opposed to that, that just requires good dampers. :shrug:

Thanks!

^ For reference, we're using 400/400 with the Whiteline 20mm front and 16mm rear bars.

Tires are michelin pilot super sports 245 width.

It's very nice...still easy to get it to rotate but very controllable. Ride quality is good on our RCE T2 prototypes (modified KW V3).

Myles has done some testing with firmer rates but I don't have the feedback on that.

- drew

I'm using out of the box KW's with the front/rear springs swapped.

I will most likely add a front bar and possibly adjust rates. I've been waiting for other mods to be installed before I corner balance the car again and give it a full eval, not to mention it's winter.

On a side note, I ought to visit RCE one of these days.

What are the stock KWV3 rates?

From what I recall (don't have the manual near me) they are 6.1k F / 7.1k R.

Any input on staggered? ~ 235/255

Yeah I just spent some time searching and found an old post saying 6/7. Round up say 340/400.

It seems like unlike the stock setup people are choosing to run higher front rates, or equal.

Looking forward to everyone elses response, kind of thinking about trying an even setup first, maybe 350/350 or 400/400. No idea on sway bars, I'll worry about that later.

I'm going to go 450/400 to begin with. Solo STX setup on 245/9" R-S3s.

I'm running 8/8 and I would that say that I would have gone with a 7/6 or tad lower for the streets, but then again that wouldn't have been the best for the track. I'm happy with that I got and the car handles very well. Some people don't even know it has aftermarket coil overs.

Which dampers? Sway bars?

Thats right you did as for that info, im running Fortune auto 500 8/8 with swift springs and rear helpers, all other suspension components remain stock.

I'm also running the flipped KW set-up which is about 340R/400F on stock sways. With 245 R-S3s I've found it pretty hard to overwhelm the rear tires with power.

we run 7k front 8k rear with no rear swaybar stock front sway and with the COG 3" lower than stock car works very well (a bit firm for my DD tastes). We have FLAT cornering (about 3 degrees at full yaw) with the ability to throttle steer the car in 2nd and 3rd gear if you keep to the tq peak when you add power.

as you can see LOW lol
http://www.ft86club.com/forums/showt...light=robispec

Robi

I think we'll be starting with 10k/12k (560/670 for you lb/in people)

Robi, we may need to consult with you at some point in the future for some geometry corrections :)