I had my springs powdercoated . After this first weekend out with the car some of the rear springs collapsed. Free lengths now range as low as 13.00 inchs on one . They are suppose to be 14's . Anyone ever have this issue ?

its the King springs.....samething happen on my buddies car.although yours are now powdercoated,call king,thats what he did and they replaced it.
if you buy new ones,buy eibachs!!!!

I wonder if the powdercoat process got them too hot?

NOt likely as the PC cures at approx 400F .IF though the original finish was BURNED off then there may have been a heat issue.

If the powder coat shop used a torch to strip the old powder off then that is probably why they sagged. King buys springs from different manufacturers, including Eibach.

Chuck Moore
Machining Dept
Eibach Springs