Rear suspension spring plate location problem

[carreraplanes]

Dismantled the rear suspension to detail it a few years ago during this project. I did scribe a line gor the spring plate angle but this looked to have been lost when the inner arches were re coated. Went to re index the spring plate and dialled in about 34 degrees. A bit too high do went about 30 degrees which looked just a bit too low so I thought to split it at about 32 degrees. Did that and when reassembled it all fell on the floor. Thought I was seeing things so dismantled it again went 36 degrees and its sitting very near the floor again. One might say the torque tube has collapsed but there are no signs of that. The mounting area around the 4 bolts that hold the plate that carries the spring plate bushing is as solid as the day it left the factory. No visible torn metal at the centre of the torque tube that would indicate failure of the tube. Nevertheless I seem to have a torsion bar location problem which is worrying...

[carreraplanes]

Forgot to say its a 1970 911t

[Dpmulvan]

Not sure if this would cause that type of issue but did you put the right bar in the right side?

[tseohs]

Just went through this procedure and had similar results with the angle method. Switched to the measure height of spring plate method as described here in post #5 and hit a near perfect 25.5" first try:

https://forums.pelicanparts.com/porsche-911-technical-forum/854707-need-some-help-new-spring-plate-angles.html

Make sure the plates 'stop' as they should when engaged and are at the highest position when measuring.

Cheers.

[carreraplanes]

Thanks teseohs for putting my mind at rest. I'll use the height method as per your link...

[tseohs]

Hope it works out for you. By 'highest position when measuring' I did not mean to press or force the plates upwards. I meant to just make sure the plate is pushed up when measuring as the plate will still have 1/16" to 1/8' up/down movement at the very bottom corner when engaged and in the down position. As you're adjusting t-bar and plate orientations, you'll likely see that it can result in very small incremental changes in height.