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Dave at Pelican Parts Dave at Pelican Parts is offline
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Join Date: Dec 1969
Location: Silly-Con Valley
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Any torsion spring can lose its torsion. The most common (by far!) mode of doing this is that the bar breaks. In our cars, the cause is very often RUST. (On a 914? Go fig!!) If you took a torch to a torsion spring, the properties of the metal would change, which would change the spring rate. If it were wound too far one way or the other, it could also change the material properties of the metal.

But to change the spring rate of a torsion spring, you either have to change the cross-section of the spring, or change the properties of the metal.

Pelican Parts 914 Tech Support

A few pics of my car:
Old 02-21-2011, 08:18 AM
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