What is the spring rate in PSI for the stock suspension springs on a Datsun 240Z?

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Wiki User
September 10, 2007 5:03AM

The calculated rate in pounds per inch for the stock front springs on a 1971 240z is ~100 lb/in. The data used was from direct measurement as follows:

8 active coils

0.437 inch coil diameter

4.447 inches spring outside diameter

torsion modulus (G) 11.5 x 10E06 psi