The reason I ask is because I am trying to get an aftermarket spring as close to the specs of the factory 340 spring, but the factory springs are rated without the damper and the aftermarket springs are rated with the damper. So if I can get an approx pressure at any seat height that the damper adds, I can more accurately compare the different aftermarket springs to the factory spring.
I’m thinking the 60’s and early 70’s manuals called out the added rate of just the damper.
For some reason between 5 and 10 lbs. comes to mind.
