Sound deadening material in rear quarter panel, behind rear window

[eriknetherlands]

Is that material still available?

Just behind the rear windows is originally a fibre like pressed pad acting as sound deadening material. it approx 4 mm thick, heavy, black, with 6 holes in it. See first image of my 'left-overs'.
I have not found a similar material elsewhere in the E9, it seems to be unique to that location.

My pads are partly missing/ cut up for previous repairs and I want to replace them, as close to original as possible.
BMW vaguely indicates (second image) in the drawing, at number 1, that something should be somewhere in that area.
When searching online, it seems to supply only the hexagon patterned material nowadays. third pic.

Has anyone sourced somewhere matching material?
(yes... i know generic stuff exists, performs even better, but i'm sucker for these things. I whish I could let it go)

 

[bavbob]

From my own experience, everywhere in my my 73 CS, that horrible tar-based product exists. I also found it in my 72 Bavaria. Could this have been replaced before and actually not original?

The tar-based stuff is similar to ice and water seal used for roofing (I used it to replace my Bavaria gas tank flange but nowhere else).

 

[Stevehose]

I added some heavy Dynamat knockoff insulation from Amazon. Also used in place of original tar mats on floors which i removed for rust proofing. Works great.

 

[ohio2800cs]

From my own experience, everywhere in my my 73 CS, that horrible tar-based product exists. I also found it in my 72 Bavaria. Could this have been replaced before and actually not original?

The tar-based stuff is similar to ice and water seal used for roofing (I used it to replace my Bavaria gas tank flange but nowhere else).

I found the same thick material, with the same large holes, in the rear panel of my '71 2800CS. It had fibers in it. As I recall, the outside surface was painted body color (the original color, my car had a color change), so applied before the body was sprayed?

 

[eriknetherlands]

From my own experience, everywhere in my my 73 CS, that horrible tar-based product exists. I also found it in my 72 Bavaria. Could this have been replaced before and actually not original?

The tar-based stuff is similar to ice and water seal used for roofing (I used it to replace my Bavaria gas tank flange but nowhere else).

@ Bavbob; the tar like insulation that is on the floor and tunnel is a different material compared to the one in my initial picture. The tar material is indeed a pain to remove, i chiselled it out; took me ~8 hours and some vocabulary that my little kids are not allwoed to use. Others have reported success freezing it before chiseling it off. But the part i'm am talking about has fibres in it, almost as if it is inpregnated coconut fibre material. I have seen it also in other restoration pictures, in that location, in the same shape. So I believe it is the original material.

I found the same thick material, with the same large holes, in the rear panel of my '71 2800CS. It had fibers in it. As I recall, the outside surface was painted body color (the original color, my car had a color change), so applied before the body was sprayed?

@ Ohio 2800CS; I really think they are originally black; mine is. I have seen others that were black as well. It is almost impossible to remove, so i do not think that my sheet was replaced at some time. 1) it seems it was never available as a part 2. if it was ever removed, the PO/shop stuck it on *exactly* on the same spot, to the millimeter as i have no imprint of a secondary location. I think it would be almost impossible to reposition a replacement sheet on exactly the same place. 3. the inside of e9's were never painted body colour; always a dull light grey. So yours probably did have some overspray on it from a repair of some sort.

Back to the original question: has anyone identified an identical (material to be used for) replacement?

 

[DWMBMW]

3. the inside of e9's were never painted body colour; always a dull light grey. So yours probably did have some overspray on it from a repair of some sort.

My inside has the original body color (even under the original black material).

 

[eriknetherlands]

Ok; I'm learning something new here. I'll have a better look this evening.
Thanks DWMBMW.

 

[Layne]

It seems to be felt that is impregnated with some semi-hardening material from what I recall. You could probably start with a sheet of felt and figure out what to soak it with to stick and look the same. I can't think of a worse part of the car to spend your time and money on though.

http://www.thefeltstore.com/default...MIm6XGzum51QIVBpFpCh2yHA8rEAQYBCABEgJ4QfD_BwE

 

[eriknetherlands]

like you said Layne, it's not high on my priority list. but as I removed this I wanted to start thinking about what to put back once I'm done with the bodywork (in a few years time i guess)