Lowering an S2

[Guest]

Hi all,

I have fitted M474 Koni yellow shock absorbers on my stock 1990 S2 and it feels like it could be a bit better if it were lower (I kept the stock springs).

The 944 S2 M474 springs specs are :
* Length : 367 mm (378 mm for the standard springs)
* Wire diameter : 11.3 mm (same as the standard springs)
* Stiffness : 23.8 N/mm (same as the standard springs)

I would like to have springs similar to the M474 springs in wire diameter, diameter & stiffness, but I would like to lower the car around 25 mm, so 378 - 25 = 353 mm < 367 mm : the original M474 springs are therefore too long.

H&R, B+G make shorter springs but the problem is that they are too stiff, stiffer than even M030 springs. I would really like to be able to have springs that have the same stiffness as the standard springs, only shorter, because I do not want the suspension to work/suffer too much on the poorly surfaced roads I can happen to drive on.

Any opinions ? What would you do if you were me ?

Thanks in advance []

 

[944Turbo]

Techart do a set of front springs - (they may in fact be made by Eibach and sold by techart) - they will lower the front and are progressive wound so they are not too firm initially but harden up as they compress (over a shorter distance as they are lower). I have a set on my turbo and am impressed - they are a different spec for the Turbo though (smaller diameter overall and stiffer rate) so I can' t give you direct feedback for the S2.

Tony

 

[Guest]

Tony - Thanks for your input.

Actually I sent an e-mail to the french Tech Art bloke a couple of weeks ago but he answered they had nothing for S2s ...

 

[Diver944]

Try some of these links Thom, I haven' t had time to check them just now but I' m sure Iv' e seen S2 lowering springs on some of them. You may need to call though to determine stiffness as it never seems to be mentioned:

www.design911.co.uk
www.type-911.co.uk
www.porscheshope.co.uk
www.ninemeister.com
www.needforspeed.co.uk

 

[Guest]

Well Tony, I sent an e-mail to the adress you gave me but I received the same answer from the french bloke ...

How long ago was it when you received these springs ?

 

[944Turbo]

Last year, do the Konis you are using have the same size diameter springs as standard S2' s?
Tony

P.S. I know someone who has a set (don' t know if they are fitted) who is considering a full suspension change - I will send him a mail see if he wants to sell them.

 

[Guest]

ORIGINAL: 944Turbo
do the Konis you are using have the same size diameter springs as standard S2' s?

Absolutely, I have kept the standard S2 springs on my new Konis, they fit with no problem at all.

 

[nfearn]

As Tony (Sidestream) mentioned I have a set of Techart lowering springs for an S2 which are as yet unused. £130 + postage or they can be collected at Eynsham Hall.

regards
Nick

 

[Guest]

Hi Nick,

Do you know what their stiffness is ?

 

[944Turbo]

I have the TUV document for the springs I will mail it to you both, Unfortunately my German is not up to identifying if the data is there.

With the Turbo springs they are a similar rate to standard over initial travel (for good ride) but then harden up much quicker as they are compressed further (progressive rate).

Tony

 

[Guest]

Thank you for the file, Tony.

On the sheet is indicated the Tech Art springs are 340 mm long, that' s 38 mm shorter than the stock ones (378 mm) and they expect the car to be lowered around 45 mm, stiffness considered (on a standstill I suppose).

I will measure the wheel/arch clearance on my car and keep you informed asap.

 

[nfearn]

Tony

Thanks for forwarding this info on. I am somewhat busy today and am focusing on work issues.....

Nick

 

[Guest]

I have measured the tyre/wing clearance and 40-45 mm lower would definitely be too risky.

Anyway thank you for your input, and sorry for not buying.