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

[solidONE]

Originally Posted by Dimman

Feeler gauge.

Bore gauge?

[SubieNate]

Originally Posted by solidONE

Bore gauge?

Hopefully it's not of the no-go variety.

[GTHachiRoku]

@CSG Mike - I installed a set of Tein Street Flex coilovers and set them up to the recommended specs in the manual for the frs/BRZ. I measured as close as I could get and only the front passenger needs a tiny adjustment.



It seems great so far, especially for the street.
The ride is quite smooth, yet refined and feels more planted.

However I'd like to hear your recommendations for a track setup.

I'm hoping to get about -2.0 front camber and -1.5 to -2.0 rear camber.
As far as spring preload and ride height I'm clueless... And that's why I used Tein's recommendations.

I waiting for my new wheel/tire setup before I get an alignment.

[FR-S Matt]

Hmm, I'm getting some clunking noises from my Whiteline LCA's... I just recently put on KW V3's as well. Top hats are pretty secure so I'm positive it is not those clunking. Seems like the LCA's are able to move a bit more than they should. Any advice when I lift up the rear end this evening? Probably just a torquing issue or lack of torque on the camber adjustment nuts?

The clunking \ clacking noise I'm hearing is when the load changes slightly on the car even going 1-2 mph, over small hills, moving the steering wheel hard left or hard right adjusting weight.

[Turbo Den]

Dear suspension gurus,

Would a smaller diameter tire increase suspension travel?
i am thinking going extreme like 225/45/15 tire on 15x8 wheels.

Currently, it feels like i hit the rear bump stop exiting a corner with full throttle when the tire hooks up.
current setting: Tein H-tech, Koni yellow, whiteline subframe bushing.

[gramicci101]

It won't increase suspension travel at all. You'll have more clearance in the fender because that tire is 1.5 inches shorter than the OEM tire. You'll also decrease ground clearance by .75 inches and mess up the speedometer. Will a 15 inch wheel even clear the brakes?

[Racecomp Engineering]

Originally Posted by Captain Snooze

Mike and Andy.
I was just about to order some ball-jointed front lower control arms but I started thinking about the way in which impact forces would be distributed. I can't but help think that even small front impacts to the tyre/wheel would result in damage to the car frame in the long term and goodness knows what would happen in a larger impact. Given that my car is a daily driver I have decided that it would be best to leave the oem arms in place. (I replaced the bushes long ago with Avo units.) I track my car on Kumho V710 and I do not know if the standard front lca are up to the task. Should I be looking at reinforcing the stock arms or should I just wait and see what happens?

A lot of performance cars have forged aluminum lower control arms, including the new WRX. Food for thought.

- Andy

[gramicci101]

So what you're saying is to find a new WRX and swap their LCAs for ours? I feel like the owner of the WRX might get upset at that, so it's best if he doesn't know.

[Racecomp Engineering]

Originally Posted by Turbo Den

Dear suspension gurus,

Would a smaller diameter tire increase suspension travel?
i am thinking going extreme like 225/45/15 tire on 15x8 wheels.

Currently, it feels like i hit the rear bump stop exiting a corner with full throttle when the tire hooks up.
current setting: Tein H-tech, Koni yellow, whiteline subframe bushing.

No, it won't increase suspension travel. It is "free" lowering, meaning it doesn't alter suspension geometry or reduce suspension geometry (though there are other drawbacks).

You probably are on the rear bumpstops.

- Andy

[Turbo Den]

Originally Posted by Racecomp Engineering

You probably are on the rear bumpstops.

- Andy

Then, how I reduce chances of hitting the rear bump stop? I wish to achieve this with minimum new parts?
Shall I have another set of stiffer springs?
Remove the subframe bushing?

[SportInjected]

Did you try stiffening up the konis's?

[Turbo Den]

Stiffening rear Koni makes the car too tail happy.

[Racecomp Engineering]

A taller spring or slightly trim the rear bumpstops. I prefer a spring that comes with replacement bumpstops properly designed.

[Turkish]

Originally Posted by Racecomp Engineering

A taller spring or slightly trim the rear bumpstops. I prefer a spring that comes with replacement bumpstops properly designed.

RCE Tarmac springs.

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