spring info, lb rating Options

[rhodyguy]

my picture shows 2 setups. the reds came on a parts car i bought. the ones on the kyb's are stock (3 paint marks on each). the ones on the koni's have a smaller gap between the coils at the top and they are approx 5/16" in dia (+), they have a silver paint mark that runs the length of the spring. the coils on the kybs have the same spacing and they are about 1/4 " in dia. are the ones on the reds considered progressives and does anybody have any idea what the lb rating might be?

[Mueller]

I just measured my springs last night...first set that was on the car measured 50 in lb.

The second set test came out to be 140 in lb (advertised as 180's, but the 140's are better for me, so no big deal, besides, they came with like new Bilstiens at a killer price)

What I did was take one of my weightlifting bars and weights (which are a trip hazard since they see more use as dust collectors than actual workout parts)
and I placed the bar vertical. I then put the spring over the bar and measured the free length. Weights are placed on top of the spring until it compresses one inch. To ensure that I was doing it correctly, I placed more weight on the spring to move it down anouther inch. So for spring #1, 50#'s compressed it one inch and 100#'s compressed it two inches.

I did the same for spring #2. For your progressive spring, you'll have to measure it as two springs....once the closer coils are in contact with each other, the rate will increase.

I'd venture to say that your KYB springs are 50-70 in lb's and that the Koni springs are 165 progressive.

Mike