Anyone know proper length and rate of stock springs

[smurfmobile]

I am wanting to order custom rate springs for my kyb2 struts..Anyone know the stock length and spring rate? Summit has a huge assortment of lengths and rates to choose from, just need a starting point. Thanks Guys!
Josh

[floydiancomplex]

Front Rates, Diameter and Length:

14.5" Length Drivers side 14" Passenger side. I think the 1/2" difference is so the car will ride properly with the driver seated
or maybe my old springs were just worn unevenly.

4" Outer Diameter up front with about 5/16" wire diameter leaving about 3.625 inner diameter.

Front rates are rumored to be either 90 LB/IN or 110 LB/IN. My personal belief is 110 LB/IN

Rear Rates, Length and Diameter:

Rear Length is 13.25" on both sides

Rear outer Diameter 3 7/8" with about 5/16" wire Diameter leaving about 3.25" inner diameter

Rear Rate has been firmly establisted at 90 LB/IN


Hope it helps - Chris

[ejp2fast]

I am doing some research on coil springs. Here is the equation :
n = [G d^4]/[8 k D ^3] where n = number of active coils, G is rigidity or torsional modulus (lb/in^2), d is wire diameter (inches), k is spring rate (lb/in), D is coil diameter (inches)
As stated above, d = 0.3125 inches, D is 3.6875 inches FRONT and 3.5625 inches REAR, k = 110 lb/in FRONT and 90 lb/in REAR .
Only variables are G and n...
How many active coils would be estimated for stock springs for the front and rear?
here is a link:

http://www.ajdesigner.com/phpspringrate/spring_rate_equation_active_coils.php