Installing German sound dampening pad

[rgupta250 Sports Purpose 911 Find all posts View Profile Close rgupta250]

Hi Everyone:

I am undergoing a bare metal restoration on my 71T and need some help with the installation of the sound dampening pads on the floor boards. I was able to source German sound dampening pads with the hex pattern (see picture below) but there is no adhesive on the underside. I believe the best solution will be a product which can be sprayed on so that there is even coverage and it does not create high and low spots. What product should I use?

Best,
Ravi

[flatsixer aka rstarga Find all posts View Profile Close flatsixer]

The old timers use brush on glue.

[soterik HTH....! Find all posts View Profile Close soterik]

Here's what Tony uses. I believe you can find it in a smaller container....

https://www.dap.com/products-project...ndau-top-trim/

[JP aka LiveFromNY Find all posts View Profile Close JP]

Here's what Tony uses. I believe you can find it in a smaller container....

https://www.dap.com/products-project...ndau-top-trim/

That's what we use too. Great stuff.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

[sebaroher Seabass Find all posts View Profile Close sebaroher]

Hi Everyone:

I am undergoing a bare metal restoration on my 71T and need some help with the installation of the sound dampening pads on the floor boards. I was able to source German sound dampening pads with the hex pattern (see picture below) but there is no adhesive on the underside. I believe the best solution will be a product which can be sprayed on so that there is even coverage and it does not create high and low spots. What product should I use?

Best,
Ravi

Ravi,

Where did you source this from?

[rgupta250 Sports Purpose 911 Find all posts View Profile Close rgupta250]

Drum roll…..

It’s actually a BMW part. I bought the Porsche sound dampening pad but it has small diamond pattern on the top and not like the original pads which have the hex pattern (at least for the 71 cars). I figured that German OEM is close enough.

/Ravi

[sebaroher Seabass Find all posts View Profile Close sebaroher]

Drum roll…..

It’s actually a BMW part. I bought the Porsche sound dampening pad but it has small diamond pattern on the top and not like the original pads which have the hex pattern (at least for the 71 cars). I figured that German OEM is close enough.

/Ravi

I thought about using dynamat or some other quality sound dampener. But I'm sure some of the purists wouldn't approve

[rgupta250 Sports Purpose 911 Find all posts View Profile Close rgupta250]

IMHO, you can’t find anything closer to the factory material. Dynamat is a great product but no way close to factory-correct.

[bob joyce 2.4L Find all posts View Profile Close bob joyce]

i put down some similar tar pad material for my 1968. it came in a WV box 52' wide 3mm thick i melted it on to the floor.
that's how it was originally done NOT GLUED
i do not have your material so i cannot say 100 % but i bet that is how you are supposed to do it.
like practically everything else these days people do take there liberty's
the material i have has to get VERY hot before it melts on, but once it does it hardens in place and sticks just like originally.

[sebaroher Seabass Find all posts View Profile Close sebaroher]

i put down some similar tar pad material for my 1968. it came in a WV box 52' wide 3mm thick i melted it on to the floor.
that's how it was originally done NOT GLUED
i do not have your material so i cannot say 100 % but i bet that is how you are supposed to do it.
like practically everything else these days people do take there liberty's
the material i have has to get VERY hot before it melts on, but once it does it hardens in place and sticks just like originally.

Looks good Bob. Where did you source that material from? I have thought about reapplying that stuff, but it was a BITCH to remove.

[bob joyce 2.4L Find all posts View Profile Close bob joyce]

i found it at a swap meet. the guy had it for 30 years. it came in a 54" blue VW cardboard box.
had to carefully unroll it after the sun was on it. it still cracked when unrolling but once you melt it,
it went back together.
it took a lot of heat to get it to stick, but once done it was just as original.

[haul it´s easy on a triumph Find all posts View Profile Close haul]

There is a stamp on the damping pad - FAIST -

this is the producer:
https://www.faist.de/?gclid=EAIaIQob...SAAEgLB8fD_BwE

br

haul

[911MRP 2.7 Find all posts View Profile Close 911MRP]

Many of the original sound deadening I’ve seen on the floors on model 73 were covered in body coloured overspray suggesting most were fitted before painting? There are some exceptions where floor deadening was clearly after painting due to different build procedure.

[JP aka LiveFromNY Find all posts View Profile Close JP]

I'd love it if anyone who has some original photos of different years and the sound deadening could post them. I know little about this and would like to learn.

[bob joyce 2.4L Find all posts View Profile Close bob joyce]

Dr. B. Johnson: The 911 and 912 Porsche A restorers Guide To Authenticity 11
Brett details sound deadening on page 27and 28.
He gives some details on 1965 to 1973 cars.
unfortunately only a few pictures of his 1968 9/12.