hi all

i'm wondering what spring rate are H&R springs with part number 29680-1, here's the site for them.. http://www.h-r.com/de/f_sportfedersaetze.php (choose Honda and type Civic)

they are blue, and they lower car pretty much i'd say (3.5cm of front, not sure on back..)
I drive EF civic and just yesterday I got brand new Koni SP4 to replace my unknown blown shocks, and now actually ride seems kinda werid, not really as I expected (kinda jumpy i'd say, or not absorbing bumps very well), probably best to say I was expecting more stability..

Anyway didnt still found right setting maybe, I tryed to play with stiffnes a bit but maybe not enough.. so, i'm wondering if anyone has any experience with those specific springs and know their exact rates plz

and I must admit roads up here are chaos..

 

I cannot decipher the text on their site but from what I remember H&R uses progressive springs, meaning there isn't a set linear rate.

 

I also heard they are progressive before I bought them, although my fronts look like they are linear (no dead coils) as far as I can recognize.

- here's pic when I was replacing old blown shocks of front springs


- and rears look like they are progressive

to determine if spring is either linear or progressive - is it possible to do it only by looking at its physical design or there are other factors ?

anyways,

another thing, today I realised one of my new SP4 Konis actually adjusted itself by lowering rebound for approx one full circle .. anyone had this happen before? .. :D


and p.s.
sorry about German site thingy, it seems that at the time in my country only H&R springs were available to buy for EF were this ones with this part number, when I search over Google it points me only to German site, and browsing H&R global site has another spring partnumbers for EF, now I dunno if it's same or different spring actually.

 

That looks linear.

The spring part number looks like a progressive spring kit for the EF Civic. I didn't find anything more through Google or H&R's site. Perhaps an email to www.hrsprings.com is in order.

 

I'll ask them, thanks for help ;O)

 

fronts are 45N/mm (4.6kgf/mm or 257lb/in) rears 40N/mm (4.0kgf/mm or 228lb/in).

I guess that would explain why car still kinda rolls, but .. dunno why it's bouncy and bumpy.

What are original spring rates for Civic ED7 (EF..) ? it's EDM Hatch 1.6i-16 model (D16A9 [DOHC ZC]) ?

 

It's bouncy because those rates are soft as ****. That's why. Not too much stiffer than stock rates.

 

thanks.. mystery solved, time for new springs I guess

 

H&R race would be a good alternative. Good springs and good rates.

 

thx for suggestion, I already looked at them and they seem really nice, but .. my car is already too low with this sport -3.5cm, I really dont wanna go any lower than this

h&r website says race lowers fron -5.7cm and rear -5.08cm.. waaaay too much for me for street use on EF chasiss in EU.

any other suggesions?

 

Can you move the perch on the Koni up any further?

 

it's all the way up already unfortunatley

i know best and simplest solution woul be GC sleeves with custom springs, but it's too much money for me at the moment ..

thx for tips guys

 

Normally, softer rates reduce the odds of a bouncy ride.

If it's bouncy, increase the shock damping. That is the point of adjustable shocks after all, to adjust them for the weight and spring rates of the vehicle.