Can someone take exact same photo of undercarriage 911SC?

[octanemaestro]

I am trying to determine whether I have a bend in the chassis at the left trailing arm mount point. Can someone post an undercarriage photo of your 911SC with the same perspective as these photos so so that we can compare yours:





Your help would be very much appreciated!

[T77911S]

you should degrease. pressure wash the under side if you are looking for details like that.

[faverymi]

Easier to measure rather than eyeball it.

[Kraftwerk]

I would think if you had a bend there you would have at least one bend elsewhere as well, but I am no expert . Faverymi is correct : you should measure all pertinent points /attachments and then post your results here. I will measure the same spots on my car ( since its raised up already..) and send you the results. T77911S also has a the right idea as well.


Just noticed your other post... Bill Verberg ( a resident expert around here on all things Porsche ) says you might have TWO different types of Fuchs wheels in the rear, that makes most sense at this point. One could be 911 the other from a 951.

[Walt Fricke]

What you are apparently looking at are the banana arm inner mounts. Those are not part of the chassis proper. They are attached to the torsion tube, which itself is attached to the chassis over on each side, though on some cars there are small reinforcing pieces connecting the torsion tube at these mounts to the upright part of the chassis/floor pan just forward of the tube.

It takes a really terrific force to bend this torsion tube, as it is very stout and is well out of the way. Over time, some cars have had this rust and crack here or there, but you should be able to inspect for that (after a thorough cleaning). If the tube somehow got bent (ordinary driving is not going to do this, as it is up and out of the way, you should be able to see a dent or kink or tear in the metal.

[scottrx7tt]

If the mount is bent, you should have a hard time with your rear alignment. Why not just put it on an alignment rack. If things check out ok, you will be fine.

[octanemaestro]

Originally Posted by Kraftwerk

I would think if you had a bend there you would have at least one bend elsewhere as well, but I am no expert . Faverymi is correct : you should measure all pertinent points /attachments and then post your results here. I will measure the same spots on my car ( since its raised up already..) and send you the results. T77911S also has a the right idea as well.


Just noticed your other post... Bill Verberg ( a resident expert around here on all things Porsche ) says you might have TWO different types of Fuchs wheels in the rear, that makes most sense at this point. One could be 911 the other from a 951.

The rear wheels are identical. I will take you up on the offer to measure against numerous points and post the results here. Maybe I will make a diagram out of a photo with the measurements directly on the photo.

[octanemaestro]

Originally Posted by Walt Fricke

What you are apparently looking at are the banana arm inner mounts. Those are not part of the chassis proper. They are attached to the torsion tube, which itself is attached to the chassis over on each side, though on some cars there are small reinforcing pieces connecting the torsion tube at these mounts to the upright part of the chassis/floor pan just forward of the tube.

It takes a really terrific force to bend this torsion tube, as it is very stout and is well out of the way. Over time, some cars have had this rust and crack here or there, but you should be able to inspect for that (after a thorough cleaning). If the tube somehow got bent (ordinary driving is not going to do this, as it is up and out of the way, you should be able to see a dent or kink or tear in the metal.

>"you should be able to see a dent or kink or tear in the metal."

Would you be able to see such a torsion tube dent or kink without disassembly of anything? I understand it's a bear to remove the torsion tube.