Street Touring Rules Question - Coilovers

I'm considering a set of racing coilovers for my Fiat Abarth. Is there anything in the rules about spring relocation?

The stock setup on the car has the traditional setup in the front (shocks and springs are one unit) but the shocks and springs are separate in the back. I'm looking at a couple of more serious coilovers that have the shocks and springs as one unit in the rear. Is that not legal to use in ST?

Thanks!

You can switch to coilovers for the Street Touring classes. Make sure to work on the driver, and have fun.

Actually, I don't think that you can. From the 2014 rule book-

14.8 SUSPENSION A. Ride height may only be altered by suspension adjustments, the use of spacing blocks, leaf spring shackles, torsion bar levers, or change or modification of springs or coil spring perches. This does not allow the use of spacers that alter suspension geometry, such as those between the hub carrier and lower suspension arm. Springs must be of the same type as the original (e.g., coil, leaf, torsion bar, bellows) and except as noted herein, must use the original spring attachment points. This permits multiple springs, as long as they use the original mount locations. Coil spring perches originally attached to struts or shock absorber bodies may be changed or altered and their position may be adjustable. Spacers are allowed above or below the spring. Coil springs may incorporate spring rubbers.

The relevant sentence being "must use the original spring attachment points"

cmcgregor is right. No true coilover option in the rear. Only a shock and spring with adjustable perches.

Yeah, the spring restriction seemed really silly. But it's written in the rules. I was hoping that section was referring to other weird coilovers considering the coilovers I am looking at are very normal.

Oh well thanks! Maybe one day I'll go all out and SMF the car.

Yeah. Sometimes the SCCA rules are.....interesting

Then again, an adjustable spring perch in the stock location with a shorter spring is fine. And probably preserves some tire clearance, which is nice. Less convenient to install than the true coilover setup, but gets you the same result.

Hmmm nevermind. Looks like we have to use the original attachment points in Street Prepared as well. So it's not legal in SMF either? That's so weird. I'm considering getting "competition" KW coilovers and can't use them in competition lol.

is the fact of the springs "living" in one place and the shocks "living" in another (as opposed to being inside the spring) a hinderance to the performance of the car ?

if not, then stiffer springs, and better quality (adjustable) shocks would actually be easier to work with (change out as needed) than traditional coil overs … which make it a PITA to pull the shocks

nilfinite wrote: Hmmm nevermind. Looks like we have to use the original attachment points in Street Prepared as well. So it's not legal in SMF either? That's so weird. I'm considering getting "competition" KW coilovers and can't use them in competition lol.

I just re-read the rules and you have to go to the prepared class to use coilovers all around. You can call Koni or Bilstein to have them make or modify their performance shocks to 10-way double adjustable shocks and struts that are as stiff as their coilovers, but without the attached springs and perches. Then, you can get custom springs that are the stiffness that you need, and won't necessarily handle worse. But, you need to have raced your car and raced enough in general to know for sure.

Thanks. I also got the chance to ask the SCCA guys (because the rule seemed silly) and it isn't legal. Reason I was interested is because someone had a new set to sell that I buy for less than list. Since I can't use them, I won't be getting them.