911 2.7 MY 1976 body listing slightly to one side

[matthew.saunders1]

Hi everyone,
I've had my 2.7 for a few months now & I've noticed it has a slight list (sag) to the nearside, both front & rear. I had clocked it a while ago, but it's not immediately obvious & I put it down to an optical illusion as my garage floor is slanted. Now I'm using it more I've noticed the list on flat surfaces where I've parked, particularly at the rear.
I have had most of the suspension components recently replaced (shocks, arms, tie rods, bushes) & the car drives without any rattles/bangs. Steering is excellent, stops in a straight line etc. In short nothing to suggest the suspension that has been replaced is at fault (it drives much better now!) Also, looking at pictures pre & post suspension refresh it looks the same as before, so must be something else that wasn't attended to.
The body & panels all appear to be straight. The underside has been insepcted more than once. There is no indication that the car has been in an accident. Aside from normal consumables everything appears original on the car.

Naturally I'm going to take it to my engineer to inspect, but I'd appreciate any comments or opinions before I do please? I've seen comments on the Pelican forum that it may be the Torsion bars & that they can be adjusted?? Any feedback if you've had this issue would be much appreciated!

 

[911hillclimber]

I've owned my 73T for 37 years and have done the suspension alignment several times in those years, and also by specialists who really understand the suspension.
So, I would suggest the garage mechanic has the car on his ramps and measures the floor to the wheel arch tops as they should be about 5mm to each other.

The front distance is different to the rear. The car does not HAVE to be on level ground/surface, but it helps.

If the one side is down on the other then the torsion bars need adjusting to get the lowest to meet the highest.

The front is very easy to do, just a 10mm A/F ring spanner (!) which will raise the front. However....

The rear will also need a similar tweak and that is far more complex.

The procedure is nicely detailed in the Haynes Manual on the early 911's and simple to follow, but it can/will be a sod to do.

I personally would search out a good Porsche independent versed in these early car for the job. If the car 'level' is a mile out (ie 20mm) then adjusting the torsion bars can affect the toe-in front and back, so really a shop with all the right equipment but the right people to use it is the best way.

All done the car will be great.

You can find people in your area in the Porsche Post or better still contact your regional rep who will know the right people to contact.