Suspension advice

[Philip Hall]

Just purchased a part complete project and would like to know a starting point for the spring rate from what's already there. These are Spax M73's. The car had a cross flow and we're just installing a ST170. I'm going to change the springs and dampers and like to establish my starting point.

 

Any suggestions would be appreciated.

[theduck]

I assume you have a monocoque with inboard suspension? In which case around 120lb is recommended.

[Philip Hall]

3 minutes ago, theduck said:

I assume you have a monocoque with inboard suspension? In which case around 120lb is recommended.

You are correct, that's the setup. Thanks for the advice.

[PhilW]

Philip,    I have a pair of coil springs 120 lb/in x 8" free length, 2.25" inside diameter.  I fitted them but the car was never driven as they were not suitable for my car.

If they are suitable you can have them for the price of the postage.

Phil W.