Cal Club Autocross Forums

Hypercoil Race Springs
8" x 2.5" x 700lbs QTY 2 - USED
8" x 2.5" x 550lbs QTY 4 - USED
8" x 2.5" x 500lbs QTY 2 - USED
8" x 2.25" x 350lbs QTY 2 - USED
7" x 2.25" x 1000lbs QTY 1 - USED
6" x 2.25" x 700lbs QTY 1 - USED
7" x 2.25" x 250lbs QTY 1 - USED
8" x 2.5" x 700lbs QTY 2 - USED
8" x 2.5" x 550lbs QTY 4 - USED
8" x 2.5" x 500lbs QTY 2 - USED
8" x 2.25" x 350lbs QTY 2 - USED
7" x 2.25" x 1000lbs QTY 1 - USED
6" x 2.25" x 700lbs QTY 1 - USED
7" x 2.25" x 250lbs QTY 1 - USED
8" x 2.5" 800lbs QTY 2 - New
8" x 2.5" 600lbs QTY 4 - New
7" x 2.25" 550lbs QTY 1 - Used
5" x 2.25" 400lbs QTY 2 - Used
4" x 2.25" 400lbs QTY 2 - New
6" x 2.25" 350lbs QTY 2 - New
5" x 2" 300lbs QTY 1 - New


Eibach Race SPrings
8" x 2.25" x 700lbs Qty 4 - USED
6" x 2.5" x 700lbs QTY 1 - USED
6" x 2.25" 1500lbs QTY 2 - Used
8" x 2.25" 660lbs QTY 2 - Used
8" x 2.25" 375lbs QTY 1 - Used
9" x 2.25" 350lbs QTY 2 - Used


H&R Race Springs
6" x 2.5" x 900lbs QTY 1 - USED
8" x 2.5" x 800lbs QTY 2 - NEW


I will have more posted later. Each spring is $40.00 + tax (9.75%) if you live in CA.

hmmm those 1000lb springs are taunting me to use up front.

Jonathan Lugod wrote:hmmm those 1000lb springs are taunting me to use up front.

Front not back? I thought the usual Civic setup was stiffen the back so the car will rotate.

will 2.5" springs rattle on my 60mm perches?

Jeff just told me they've all been sold.

@Daniel I used 2.5" on my old KW 60mm perches. They worked fine as is. But it was easy to build up the perches by wrapping some tape around the perch. I did that. And when I switched out perches I tried it without and didn't notice a difference. YMMV.

Daniel Yeung wrote:will 2.5" springs rattle on my 60mm perches?

daniel, ive also used 2.5" springs on my 2.25" springs, they will not rattle, just have to make sure they sit on the upper spring perch properly when you let it down. The clearance isnt as great from 60mm -> 2.5" anyways.

update spring list.

Will started to salivate when you listed the 6" 1500lb springs.

Steve Ekstrand wrote:@Daniel I used 2.5" on my old KW 60mm perches. They worked fine as is. But it was easy to build up the perches by wrapping some tape around the perch. I did that. And when I switched out perches I tried it without and didn't notice a difference. YMMV.

Thanks for the advice. I'm gonna throw 'em on my KWs!!

Jeff: can you bring the 8"x2.5"x550lbs (all four) to the next auto-x? Thanks!!

Steve Ekstrand wrote:Will started to salivate when you listed the 6" 1500lb springs.

6.7Hz FTW!

Will Kalman wrote:

Steve Ekstrand wrote:Will started to salivate when you listed the 6" 1500lb springs.

6.7Hz FTW!

Interesting... I only show ~3.2hz in the front... Unless this is a joke. Maybe you are talking about your escort

Jeff Wong wrote:

Will Kalman wrote:

Steve Ekstrand wrote:Will started to salivate when you listed the 6" 1500lb springs.

6.7Hz FTW!

Interesting... I only show ~3.2hz in the front... Unless this is a joke. Maybe you are talking about your escort

You forgot the 2.0938 multiplier.

@Jeff Its for the RX8 we're building.

KJ Christopher wrote:You forgot the 2.0938 multiplier.

You do the math and let me know what you come up with

Sprung Weight = ~580lbs
Wheel Rate = ~614lb/inch

hmmmm i can use those up front! then maybe ill try no front bar

Jeff Wong wrote:Interesting... I only show ~3.2hz in the front... Unless this is a joke. Maybe you are talking about your escort

Yes, big improbable numbers make the joke funnier.

(And the Escort was just a shade under 3Hz in front not counting sway bar - you don't want to know the rear number, which is typically absurd in FWD applications).

Jeff Wong wrote:

KJ Christopher wrote:You forgot the 2.0938 multiplier.

You do the math and let me know what you come up with

Sprung Weight = ~580lbs
Wheel Rate = ~614lb/inch

you're funny sometimes....

KJ Christopher wrote:

Jeff Wong wrote:

KJ Christopher wrote:You forgot the 2.0938 multiplier.

You do the math and let me know what you come up with

Sprung Weight = ~580lbs
Wheel Rate = ~614lb/inch

you're funny sometimes....

, i honestly did not catch that until now. I was doubting myself and that I was doing it wrong, which wouldn't be a first, Huge fail, thanks for the laughs at my expense.

Of course the frequency drops when you add damping so you'll probably want to set your shocks full soft to maximize the effect of the stiffer springs...

Daniel Yeung wrote:

Steve Ekstrand wrote:@Daniel I used 2.5" on my old KW 60mm perches. They worked fine as is. But it was easy to build up the perches by wrapping some tape around the perch. I did that. And when I switched out perches I tried it without and didn't notice a difference. YMMV.

Thanks for the advice. I'm gonna throw 'em on my KWs!!

Jeff: can you bring the 8"x2.5"x550lbs (all four) to the next auto-x? Thanks!!

On second thought, I've decided that I'm not going to revalve my Kws, so no need to bring the springs this wknd.