Ok, maybe the Holy Grail to those who've actually wanted to know.
With Bampf's help, I calculated the spring rates front and rear on my base prelude, totally stock.
The equation I used was from "How to Make Your Car Handle" by Fred Puhn.
W^4 x G divided by 8ND^3
W is the diameter of the spring wire
G is 12,000,000, a constant for steel springs
N is the # of active coils + 1/2
D is the diameter of the coil, measured from middle of wire to middle of wire.
The answer was a bit surprising -
178lb/in up front
190lb/in in the rear
With Bampf's help, I calculated the spring rates front and rear on my base prelude, totally stock.
The equation I used was from "How to Make Your Car Handle" by Fred Puhn.
W^4 x G divided by 8ND^3
W is the diameter of the spring wire
G is 12,000,000, a constant for steel springs
N is the # of active coils + 1/2
D is the diameter of the coil, measured from middle of wire to middle of wire.
The answer was a bit surprising -
178lb/in up front
190lb/in in the rear