enginyr

I have a hommie roll'n on the Tein Cs's.......he says......softer than stock.....

twojayzee

Whats the imperial conversion then for kg/mm^2 ? how do I figure out what those are in lbs ? Can anyone help ?

Thanks

Manaray

The reason is because spring rates of coilover systems are designed and engineered to work with particular dampening rates of the coilovers...

So when you put a lowering spring onto a stock shock that's not designed to operate at a compressed state, the comparison or just spring rates would be pointless because the "feel" isn't going to be the same even if the spring rates are exactly the same. Does that make any sense?

EG8: what is the need to convert it to lbs/in (or whatever)? The "other" way to show those numbers is N/mm^2 (Newtons)...the only way I've seen it show (and this was VERY RARE) is "ksi"...

twojayzee

Its not imparative but I would like to be able to compare to see what kind of spring rates I should run in my 1st gen gs3. I made a coil over system and wanted to know if the rates are comparable. Im currently only running 450's in the front and 350's in the rear. Im told the supra's run between 450-800 depending on the setup.

Thanks

Manaray

Ok...the formula is ROUGHLY 1:55.9...so 1 kg/mm = 55.9 lbs/in (or 56 just rounded up)...here's a chart for the lazy...

kg/mm - lbs/in
3 - 168
4 - 224
5 - 280
6 - 336
7 - 392
8 - 448
9 - 504
10 - 559
11 - 615
12 - 671
13 - 727
14 - 783
15 - 839
16 - 895
17 - 950
18 - 1007
22 - 1231 (ouch!)

On the Supra (JZA-80), the Tein HA's are 14/8 (783/448). The Tein CS's are 10/6 (559/336)...

2Lexos

Hey Manaray, just wanted to contribute to your list for the JZS-147

Cusco Zero1/ Zero 2: 16/10
Reckless Quantum: 20/16
I.MEC----no spec.
Section SPEC RM/A-8: 14/8
Junction Produce----no spec.
Nishiki: 14/7
Bilstein----no spec.
Ohlins: 7.2~8.6/6.4~7
Sard: 16/14
Quantum RM & RS----no spec.

and I have the Zeal Function -S6 option listed as 16/14 not 16/12. hope this helps someone.

alex

Manaray

Hey 2Lexos, thanks for the additions...I'll merge them into the original list...also, I'll check on Zeals again...thanks for helpin' out!

GS400_PUSHER

Softer than stock................:eek:

Manaray

Ok, I just found out some INTERESTING information. Tein apparently uses different mm numbers to do their rating...so it could be like 10kg/200mm for one setup and 10kg/250mm for another...a 10kg/200mm will be STIFFER than a 10kg/250mm...

So the information spiral continues...what I'm going to do is make a new list using with Spring Rate Ratio number (SRR#)...here's a sample...let's do two different systems...

System 1 = 10kg/200mm which = 0.50 (10/200)
System 2 = 10kg/250mm which = 0.40 (10/250)

System 1 has a SRR# of 0.50 while System 2 has a SRR# of 0.40. So System 2 will be SOFTER than System 1...

This is going to be an ongoing project...

Manaray

Ok, I have spoken with Tein and they said that ONLY the kg number matters...so my initial thoughts were correct...

Anyways, I have made this a sticky once again cuz there have been a lot of coilover questions lately...

SandRock

I read in another post that the CS does not drop as far as the HA is that true?(TEIN)

JAC JZS

Right the CS is more comfort oriented & does not drop as far as the Ha's. These are the Official Tein CS & Ha #'s for GS cars.

CS Damper (retail $1,500): Ft: -1.4 in (max) Rr. -2 in. (max)
Ft: -.5 in (min) Rr. -.6 in. (min)
HA Damper (retail $1,150): Ft: -3.3 in (max) Rr. -4.4 in. (max)
Ft: -.6 in (min) Rr. -2.2 in. (min)

*These measurements were taken while the car was on 245/45/18 wheels/

SandRock

Thanks..the CS drop should be good for 19s right?

JAC JZS

I have seen the Tein CS(on max lowest setting) on 19's and they look great! With that setup you'll have total coverage of front and rear fenders over the wheels , while still maintainig a stocklike ride .

ezlyf

You think the wife will notice ride difference if I "sneak install" tein flex's even on the softest setting???