W123 and W140 suspension data

[GREASY_BEAST]

Also posted in Tech Help, but getting no response.

I need spring rate, wire diameter, overall diameter, and overall height for Non-SLS W140 springs. Both the Heavy-Duty versions and the Normal ones.

This information is available for W123s in the shop manual, for W124s in microfiche, not sure where for W140s. Anyone here work on W140s?

This is preliminary "research" for building a replacement for the SLS system in a W123 300TD. Basically, I am using the overall diameter and overall height numbers to make sure the springs will fit (comparing to W123 springs) and trying to get a spring rate that is good for about 500lbs more weight on the rears than a W123 sedan. Spring constant can then be calculated with F=kx and ride height at any weight can be determined.

Also helpful would be unloaded front and rear axle weights for W123 wagon and W123 sedan. Please post here if this information is available!