da9 stock spring rates?.+ suspension upgrade in general?

***2HOT4U*** · 04-09-2007 01:11 PM

Hey guys, does anyone know the stock spring rates of a Da9 Integra?

I can get custom industrial made springs reasonably cheap, and i am wondering what spring rates to run on the street, also what reccomendations for shock absorbers to run. Im thinking i'll probably double the stock spring rate with around a 2" maybe 2.5" drop front and around 3" rear.
Not after coilovers. Will be looking at changing LCA's and probably toe in etc. whilst doing it so any help/ reccomendations on parts for this would be appreciated also.

Cheers, Reece

***2HOT4U*** · 04-09-2007 05:29 PM

bump.

***2HOT4U*** · 05-09-2007 10:55 AM

bump.
no one knows the stock spring rates of a da9 integra?
anyone know where to find them?

***2HOT4U*** · 06-09-2007 02:06 AM

bump.

***2HOT4U*** · 06-09-2007 12:36 PM

No ideas?

**string** · 07-09-2007 12:31 AM

To be perfectly honest, you're best off measuring it yourself. The range of values out there are so great you can never know who to believe.

I've never measured myself but i'm sure that with a 30cm ruler, a few weight plates and a bit of time and you could come up with something more than accurate enough.

If you are serious about handling though, you might not want to keep the same front:rear roll stiffness ratio as stock (which from memory is just based on weight distribution). Search honda-tech.com for plenty of arguments for a heavily rear biased FWD setup. (i.e. doubling standard rates will still leave you with far more understeer than i'm assuming you want).

Also, be careful about lowering. Lowering does lots of funny things to suspension geometry, aswell as greatly reducing suspension travel. Double stock spring rates is still relatively soft, and reducing wheel travel by 2.5"-3" is going to take it's toll on standard length dampers.

***2HOT4U*** · 07-09-2007 03:21 PM

thanks string, i have actually noticed that in a lot of fwd setups they have a rear biased suspension setup. I will definitely check out honda-tech.com for some details. and yes, i want to reduce understeer.
Where you mentioned standard length dampers, how much do different brands etc. vary in length and damper rates etc. to be honest i have done no homework as to the shocker side of things only the springs...

.

I was having a good read of the thread with the whiteline rep, discussing spring rates and swaybar combinations (together with lots of other factors, toe, camber etc.) and i found that with a bigger swaybar(s) this will help reduce the spring rate needed, which will help improve traction.
Let me know if i'm steering down the wrong track but just been trying to gain some knowledge about this whole suspension bizzo in general, just learning.

Cheers, Reece