reindexing torsion bars

[Johan123m]

Changed the rear torsionbars of my '73 911 past weekend and lowered the car.

Just went up by 1 size, from the original 23 to 24.1

Used the ride height calculator, went from 36 degrees of the springplate to 28 degrees.

Car was perfect from the first try (23,85 inch in the back)

I also lowered the front to 24,5 inch

but...no afternoonproject can be complete without some kind of unexplainable problem....
in the rear, the driver side is about half an inch lower than the passenger side..(I measured trough the middle of the wheel to the top of fender).I used a digital protractor to set the springplate, so I know they're perfectly equal.

What could cause this difference? I know the fenders are handmade and they're might be a slight difference in them.

Is there a more accurate way to see if my car is level?

I know you guys like treads with pics, so here's one

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[Eagledriver]

Measure from the torsion bar to the ground on both sides. If you still have the car tilted and you set the spring plates the same then the source of the problem is probably the front torsion bars. You can jack up the front and see if the adjuster screw contacts the lever on the torsion bar the same on both bars. You probably have one front wheel set higher than the other.

-Andy

[2.7RACER]

Johan,
There is a triangle method to check the front or rear height settings.
To check the rear height, raise the car at the exact center of the front.
I use a tape measure to find the exact right to left center.
I then raise the front exactly on the mark. I use a hockey puck between the jack and car.
The idea is to allow the front of the car to tilt freely giving you a height at the rear not influenced by any error at the front. The rear height will be a bit lower when lifted at the front.
You can lift the car enough to clear the front tires.
You can also remove the front tires and lower the jack at the front to a height near 24.5 at the front fenders.
Again the idea is to then check the rear dimensions at the fender arch or at the center of the rear torsion bars.
If there is a difference you'll need to correct it by re-indexing the rear bars.
If the rear is equal on both sides at the fender and the torsion bars, the front is influencing the rear and the front must be re-adjusted.
To set the front equal, lift the rear at the center seam of the motor with a hockey puck beteen the motor and jack.
Like the previous procedure, the front will be unaffected by the rear and you'll see the front settings unaffected by the rear.
Make certain you are on a level surface and carefully measure.
Do this carefully and you will have corner balanced the car.