Talk torsions and springs. Options

[gnomefabtech]

Hello all-

So, I'm finally able to turn my attention to the suspension on my car now that it's running.

The car was hacked for a v8 when I got it and I have instead done my Hayabusa engine swap. I'll have to make a separate thread on the adaptor setup, but it's mounted north south and uses the original 901 trans. Dynos at about 300whp with turbo. 2k lbs overall weight. Narrow body.

The PO added some crazy stiff rear springs on coilover sleeves and they need to go. Also the front is way too stiff. It's all 911 front suspension and brake parts.

Questions:

I'm thinking about 140# springs in the back, but how long a spring should I use. 14"? 12"? Helper springs?

In the front I think it might have like 21mm bars, and that's way too stiff. Are normal 19mm 911 bars soft enough for a street driven 914? Or are there thinner 911 compatible bars?

Thanks!

[Superhawk996]

Here is a question to think about

If you are running a 2000 lb car and doing so on the street why would you need rear springs that are 55% stiffer than the GT ran?

There is no right or wrong answer it all depends what you’re trying to achieve with the car (which you haven’t stated).

[JamesM]

Here is a question to think about

If you are running a 2000 lb car and doing so on the street why would you need rear springs that are 55% stiffer than the GT ran?

(IMG:style_emoticons/default/agree.gif) That! 100%

in the 90s people over sprung the crap out of these things in addition to using the dog (IMG:style_emoticons/default/stromberg.gif) poly bushings that just caused control arms to bind up. It "feels" like it handles better because its more responsive but both your grip and your ride quality suffer. Unless you are regularly taking corners at 100+ MPH you are probably better off keeping it on the softer side.