Spring Rate Chart

[Mister2zx3]

Eibach Pro Kit is indicated as being progressive in a few places..

http://www.tozka.com/store/catalog/p...95246b9d5450f2

[Tri-Bar]

shulu X, info on your springs.
Espelir SAD:...........291lbs(5.2k)....291lbs(5.2k)....20m m f/20mm r
It's a little more than a .75 drop front and rear.
List has been updated.

[wtz]

Tein Flex is 448 lbs. rear.

[instigator]

Yes the Eibach are progressive. Stock are linear.

[Tri-Bar]

Thank you, both have been updated.

[Shahul X]

Espleirs it is.... .79 drop is enough for me, plus highest spring rates.....
Thanks for the great post again Tri!!!!

-shahul

[Tri-Bar]

Your welcome. Happy to help.

[PPI]

The espelirs do have a nice rate with a subtle drop. So do you think these springs on a totally stock evo would increase your slalom speeds and increase the handling capabilities just because they are lower and stiffer? I would think so...but I also think there would be more too it than that.

[Evo Ate]

I would think they would increase the handling, given the fatory dampeners being quite stiff. I think I will go will those springs myself. I bet the ride is harsh though.....who cares about that when you're spanking it on the track.

[steve_evo]

Originally posted by Tri-Bar


The stock spring rate are soft front 180lbs(3.2k) rear225lbs(4.0k). The struts and shock are highly valved for high speed damping,but lack the low speed we need for the street, will know more on them when I can get over on a shock dyno to test them out better.

Yes very true, the stock shocks have o'plenty of high speed compression dialed in. This is what contributes to the bouncy and skaty ride that the EVO exhibits. Which is why I don't see how any of you can even consider putting a spring that is many times stiffer than stock, do you want even more bounce in your pogo stick?
Too much spring acts similar to having too much compression dampening and will reduce mechanical grip.

I would be very curious to see what Mitsubishi did with the EVO MR, to know if they have changed the spring rates. They did change the shocks to Bilsteins which was a smart move. Isn't it interesting that they didn't even look to their aftermarket Japanese suspension companies for the MR edition?

Steve

[hueman]

anyone care to explain all these terms? progressive rate, linear, huh??

forgive my ignorance, i'm not familiar with suspension terms at all. what do the pounds mean? and the parenthesised K numbers?? what should i look for in terms of lbs and such? higher the better handling/stiffer?

[Shahul X]

I agree the rates on the espleir will be much rougher than stock, but maybe the Stechs would be a viable option if it wasnt a 2" drop.... thats too much for me in my area of the USA.....

the rates are just a bit more than the RALLIART spring...so....

[gonzo]

Can a mod make this a sticky? A lot of good info here.

Thanks.

[Tri-Bar]

Hueman,
Progressive and linear rates, It all comes down to the way the spring compresses. Progressive spring change their rate as the spring compresses. The spring may be 100lbs for the first 2" of it's travel, then change to 225lbs after that. (soft to stiff.) Linear will always be, say 100lbs per inch. So it take 100lbs of force to compress the spring 1 inch, 200lbs for 2" and so on ( always stiff for a given rate). This is the simple undersatnding of how they work, hope it helps.

[EVONation]

So what do you think then? Get the Tien H Tech and chnge the shocks? OR get the Tien and keep the rest stock?