CSG and RCE tag-team suspension Q&A thread! Ask us anything!

[Racecomp Engineering]

Originally Posted by Readytoxplod

I'm looking at Michelin Pilot Super Sports or Hankook v12, v12 is cheaper and supposedly is a great tire.
-Also a second question, would 8.5/9.5 be better or 8.0/9.5? I understand it causes understeer and is detrimental towards handling but I want the best handling option out of those two choices. (also plan to tune out understeer with more power, stiff rear swaybar, maybe stiff springs?)
You guys are a great contributor to this forum

Those are big wide wheels and both options really aren't going to be ideal. I would think about 9 inch wide all around.

- Andy

[Racecomp Engineering]

Originally Posted by yomny

@CSG Mike @Racecomp Engineering
I wanted to know what a reasonable front and rear camber would be to accomodate 9" wheels with 255 tires. What's the max I could use without really causing an extreme wear situation for daily driving. I do occasional HPDE so I know camber would benefit me.

Part two of the question- When installing rear control arm to adjust camber at what point will i NEED toe arms? At what camber setting do the rear toe arms fall short.

Thanks!

-2 degrees camber is a good limit if you're worried about tire wear and still want sporty handling.

For toe arms off the top of my head you generally won't need them unless you're slammed or want a ton of camber for some reason.

- Andy

[Racecomp Engineering]

Originally Posted by BRZ-One

Good Day!

I think I've decided on the Ohlin's Road & Track.
Had a few people mention to me that it's probably my best bet..
But before, I bite the bullet I'm looking for more validation in what I've decided.

I'm currently using a Swift spring kit, w/ stock shocks & the stock tower mount (unfortunately I had to remove the Whiteline tower mounts). I was happy with the setup until I had to put the stock mounts back in and lost the additional camber and castor..

I'm also interested in getting the car corner balanced & from what I'm reading that can only be accomplished with a coil over system, where you can adjust each shock independently.

Track/HPDE @ Sebring about 6 times/year...
So...bumps galore in T1 & T17
Some street driving, I drive it back and forth to the airport 3 times/mo.

Already installed:
Whiteline Sway bar kits F&R, Rear LCA's, Rear Adj. Toe Arms

Thanks...

Ohlins are an excellent choice, we have a lot of experience with them and ran them on our own shop car. Excellent valving that will eat up Sebring. Give us a call if you have any questions. That's one of Myles in the office favorite tracks and he podiumed there in the Panoz racing series.

- Andy

[dp1]

^ That, love Ohlins on street and track

[enivid]

Anyone try ohlins with upgraded springs? Worth the upgrade?

[Racecomp Engineering]

Originally Posted by enivid

Anyone try ohlins with upgraded springs? Worth the upgrade?

We ran 450 lbs/in hyperco springs. It worked well, but it's hard to lower the car much.

- Andy

[enivid]

Originally Posted by Racecomp Engineering

We ran 450 lbs/in hyperco springs. It worked well, but it's hard to lower the car much.

- Andy

Not even an inch drop?

[yomny]

@CSG David @Racecomp Engineering
I'm a bit perplexed with coilover height adjustment. Do you adjust height measuring a fixed point in the coilover body and making sure both rears are the same as well as both front struts or do you go adjusting each side separately based on fender to ground measurements.

Must you remove end links into the front and on the rear along with rear lca or could the adjustment be made with suspension components fully installed.

[digital_assassin]

I need a quick sanity check before dropping the car off for an alignment today. In my last 2 track days the car has been slower through the corners so I'm going back to my old settings but there are some other things that changed too so if you guys could take a look and recommend anything I'm all ears.

Last night I softened the compression and rebound on the fronts. It was at 2 clicks from full stiff on the compression (12 clicks available) and 1 turn from full stiff on the rebound (3 rotations available). Current settings are below. I also raised the car back up by 3/8" all around so hopefully the corner balance is still "mostly right".

Here is where things are set now and what I want to align it to:

Lowered 1 3/4" in the Front and 1 5/8" in the rear.

Front: Camber -3.00
Front Caster =+7 (Go for as much as they can get out of it)
Front Toe = 0
Rear Camber = -2.4
Rear Toe = 1/16" Total Toe In

Perrin Front Sway 22mm set on softest
Perrin Rear Sway 19mm set on medium

Koni 8611 Race Fronts set at 5 clicks back from firm on the compression (1-12 settings on the bottom of strut) and about 1/2 way between soft/firm on the rebound. Rears are Koni 30 series and they are set wherever GC set them when they sent them to me.

Tires are Michelin Pilot Super Sports

Thanks in advance for any tips on getting this setup to corner correctly.

[rs999]

I have been reading up on Sam Strano's AutoX setup on this forum and he uses a relatively simple setup of summer tires, Strano front sway, and Koni Sport shocks.

What I want to know is how important are shocks in this setup? Are they necessary to control additional body roll or to tune out undesired body dive?

Would Bilstein B6's work better or would it be better to use RCE Tarmac Zero's?

I am looking for simple AutoX, Track, and spirited driving setups. I don't really care about lowering as well.

And Sam's setup looks to be the most simple and best bang for the buck.

[gramicci101]

What class does he run in? If it's CS, there's a reason his setup is that simple. If it's STX, there's no reason he couldn't do more.

What class are you looking to run in? Class requirements determine build limitations.

Bilstein's B6 is a strut; RCE Tarmac Zeros are coilovers. If you were to pair the B6 with RCE's Tarmac springs, you'd be similar to their Tarmac Zero, minus height adjustability.

[Racecomp Engineering]

Originally Posted by enivid

Not even an inch drop?

I can't remember exactly where we ended up, but it may have been just a bit less than an inch.

- Andy

[Racecomp Engineering]

Originally Posted by yomny

@CSG David @Racecomp Engineering
I'm a bit perplexed with coilover height adjustment. Do you adjust height measuring a fixed point in the coilover body and making sure both rears are the same as well as both front struts or do you go adjusting each side separately based on fender to ground measurements.

Must you remove end links into the front and on the rear along with rear lca or could the adjustment be made with suspension components fully installed.

Best to measure from center of hub to fender for ride height measurements. Get one side right and measure threads or something so you can get the other side the same. Measure twice. Corner balance if necessary then align.

You should be able to adjust without removing endlinks.

- Andy

[Racecomp Engineering]

Originally Posted by digital_assassin

I need a quick sanity check before dropping the car off for an alignment today. In my last 2 track days the car has been slower through the corners so I'm going back to my old settings but there are some other things that changed too so if you guys could take a look and recommend anything I'm all ears.

Last night I softened the compression and rebound on the fronts. It was at 2 clicks from full stiff on the compression (12 clicks available) and 1 turn from full stiff on the rebound (3 rotations available). Current settings are below. I also raised the car back up by 3/8" all around so hopefully the corner balance is still "mostly right".

Here is where things are set now and what I want to align it to:

Lowered 1 3/4" in the Front and 1 5/8" in the rear.

Front: Camber -3.00
Front Caster =+7 (Go for as much as they can get out of it)
Front Toe = 0
Rear Camber = -2.4
Rear Toe = 1/16" Total Toe In

Perrin Front Sway 22mm set on softest
Perrin Rear Sway 19mm set on medium

Koni 8611 Race Fronts set at 5 clicks back from firm on the compression (1-12 settings on the bottom of strut) and about 1/2 way between soft/firm on the rebound. Rears are Koni 30 series and they are set wherever GC set them when they sent them to me.

Tires are Michelin Pilot Super Sports

Thanks in advance for any tips on getting this setup to corner correctly.

How does the car feel? Hard to make suggestions without knowing where you think you're slower. Alignment specs sound good.

- Andy