Another interesting article on Autospeed:
Resetting coil springs to alter your car's ride height
Quote:
Want to tweak the ride height of your car? By f-a-r the most cost-effective approach is to reset the existing coil springs.
Reset the springs – what’s that, you ask?
Well, as the name implies, it’s a process that involves heating the springs until they’re red-hot and resetting their free length to your specification. The process is then finished by quenching, tempering, shot-peening and powder coating. It’s essentially a remanufactured spring.
There are two main advantages to this approach. First, resetting the existing coil springs doesn’t affect spring rate, so you can enjoy a modified ride height with absolutely no trade-off in ride quality.
|
Full article & pics:
Resetting coil springs to alter your car's ride height