You folks that are racing P cars with Torsion bar rear suspensions can you give me a run down of how you make these work for racing? I'm curious about them. I assume that you get a larger/stiffer torsion bar that is essentially like stiffening a coil spring. I have seen some kits for rear spring kits, coilovers that is, but that would not be legal in IT racing.

Seems like the torsion bars would be something of a pain in the butt to replace, and, without the proper (not sure what the right word is) preload or indexing it looks like the ride height would be, well, for lack of better word all wonkered up.

I practice do they work okay? Why did Porsche choose to use these instead of a seemingly much more simple coil spring design? VW origins?

Ron

PS - Found this:

http://en.wikipedia.org/wiki/Torsion_bar

Some useful stuff there but not Porsche specific.