911 3.2 torsion bar indexing

[Raypratojr]

I removed the front and rear suspension completely from the car to restore and replace bushings. I found the PO replaced the factory torsion bars with Power Barz. I reinstalled the rear suspension using measurements I took prior to taking everything apart.

However, I seem to have lost my notes regarding the front suspension. I installed the front A Arm bushings as per the Elephant Racing instructions. How do I index the front torsion bars to get the correct A Arm initial setting? Are Power Barz specific on which side they're on like the stock torsion bars are? I'd like to get everything close so I don't have to adjust the bars a thousand times to replicate the ride height I had. I figured I'd get the ride height close and then put the car on scales to dial in the corner weight. Any info would be appreciated. Thanks

[kyngfish]

I tried to look up power barz but i didn’t see any literature on them. I know sway away tells you the angle you want for you spring plate for the approx ride height you want which I think is also impacted by the spring rate of the bars. If you know the spring rate of your bars you can probably use sway away instructions. And then you have some but very little adjustment in the spring plate itself.

If you can’t find specific literature. What I would do is put the spring plate ride height setting to as near the middle as you can. Then place the torsion bar in the torsion tube and situate the spring plate on the splines so that the holes for the spring plate are slightly lower than the swing arm holes. That will get you near the ballpark. Maybe about a quarter inch off. Then reattach and drop the car and measure the height. To index in increments it’s a game of rotating the outer torsion bar splines one way and the spring plate in the opposite way. One spline at a time. So if you want the car slightly higher - you rotate the torsion bar clockwise one spline. Then rotate the spring plate counter clockwise on the torsion bar one spline. It is annoying but you get better at it with time.

Honestly if you have the funds. Get one of the adjustable spring plates from sway away. They come with bushings and you have much more adjustment.

[Solamar]

I asked the same question recently while replacing my front torsion bars and got the very un-satisfying answer "just start with them close, so easy to re-index that it's just not an issue".

Sure enough, I was a spline or two off, jack up front, rotate cap a spline, retry, done.

Nothing to loose sleep over.