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Originally Posted by rsheely
I don't care what any of you old timers say, a spring that's dang near 20 yrs old is sprung! No two ways about it. Perform all the wacko test you want, I'll stick with common sense.
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I had the 19 year old springs from the SDL sent to Coil Spring Specialties for a measurement of spring rate.
The factory spring rate for this spring was 344 lb./in.
The spring rate as measured on the 19 year old spring was 344 lb./in.
So, after 19 years of abuse, the rate of the spring is unchanged.
However,
The load height is decreased by 1/4". This would reduce the height at the fenderwells by about 5/8".
So, there is nothing wrong with the old spring in terms of doing it's job. The problem is simply that it is a bit too short. If a suitable spacer is available for the top of the spring, you would be well advised to use it and restore the ride height with it, rather then spending the money on new springs.
But, what do I know; I'm just an old time engineer.
