Stephen:
Here are the specs that I measured on my original front coil springs when I
had them out of the car:
Category Thousands Fractional
Wire Diameter: .6125 39/64
Coil Inside Diameter: 3.625 3 5/8
Coil Outside Diameter: 4.850 4 27/32
Coil Mean Diameter: 4.250 4 <
Number of Coils 8 8
Number of active coils 6.5 6.5
Finish Type: Flat Ground on both ends
Free Height: 10.50 10 =
Compressed Length: 6.85 6 27/32
Compressed Pressure: 1460 lbs/inch
Spring Rate: 400 pounds per inch
Mechanical Advantage in car 2:1
Suspension Vertical Stiffness 200 pounds per inch
(Wheel Rate)
Suspension Natural Frequency 1.35 cycles per second for 2200 lb car
Best regards,
Jim Hockert
Dallas, TX
BJ8 Open Roads Rallye
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