Replace sound deadner with what...not Dynamat??

[Randy Webb]

Good - a filled out data point. I was joking (well, partly anyway) about the dataloogers, etc.

One thing about the "outside" heat -- that really means the engine comp. -- if you feflect a lot of heat away from the passenger area, you may put it back onto the engine -- which is often too hot anyway.

Post what you do & how it works.

Best, - Randy

[Dave Ploss]

I just took out the seats and installed a layer of brown bread (Dynamat clone) and b-quiet. I did it to quiet the engine noise but the car is much cooler. I still have the engine pad but my wife and I can tell the difference in noise and heat.

my $0.02

BTW, I put the seats back in.

Dave

[ChrisBennet]

I think if I need to reduce sound I would look into using Noise Killer. It's a spray on type of sound deadener that isn't heavy and (supposedly) works in a different fashion than the heavy undercoating sound deadener. (Never tried it, don't know anything more about it.)
-Chris

[lendaddy]

If you really are concerned dynamat does have a hoodliner that is dynamat covered in heat relflective foil.

[85carrera]

doing the same project on my 85 targa. im going with dynamat extreme and 1/2" dynaliner. should do the trick. it's gonna take two door kits of dynamat extreme... and two sheets of dynaliner. $$$ but whatever....

[RoninLB]

Originally Posted by 85carrera

and 1/2" dynaliner.

lazy me... what's dynaliner


I'm overkill with heat and noise reduction already.

If i was looking for a carpet pad to add to Brown Bread and Dynamat I'd use high end house polyester fiber carpet pad as a comparison to auto and aircraft poly pads.. It's about 3/8", tough, sound resistant, and a good insulator. At the moment i don't think there wouldn't be much of a contest.

I always keep a sample around to confuse carpet salesmen bs about pads.

[kodioneill]

another option i have seen here on the board is the insulating cell foam from aircraft spruce.

[toddu]

Originally Posted by kodioneill

another option i have seen here on the board is the insulating cell foam from aircraft spruce.

I just received some of this the end of last week. I'm in the process of cutting pieces to fit and will be glueing in over the week. I ordered the 3/8 thickness, and a 4' x 5' roll probably weighed 3lbs.

I'll report my findings. With nothing back there, noise is a bit excessive, and you hear everything.

Todd

[RWebb]

appbiz has a very nice & light wt. carpet pad

avoid using something for houses on a car

[Axeman]

I don't like Dynamat myself but I just removed all the sound deadening in my 89 C4 as well as rear seats etc to do an RS conversion and bought some of this stuff on eBay, it's pretty lightweight also which is nice.

http://cgi.ebay.com/ebaymotors/TECHMAT-AUTOMOTIVE-AUTO-CAR-BOAT-INSULATION-HEAT-SOUND_W0QQitemZ140309572726QQihZ004QQcategoryZ4261 2QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

[jyl]

Good thread.

I have to do a full recarpet on my 911 this summer - driving with bare metal floors right now - and would like to reduce road noise at the same time. Thinking about a sound deadening material for the floors and a heat insulating/sound deadening material for the rear seat/bulkhead. Glad to see all these links, thanks.

[RWebb]

Sound Altering Materials:
black and blue and red RSA interior pixs

Interior project on my 87 911

http://www.lobucrod.com/

http://www.silentrunning.us/

http://www.polytechinc.com/products/barrier.php

http://www.sounddeadenershowdown.com/products/

http://www.secondskinaudio.com/sound-deadener/spectrum.php#tab3

Carpet:
http://forums.pelicanparts.com/porsche-911-technical-forum/310903-difference-btn-domestic-german-carpet-worth-post2886563.html#post2886563

http://forums.pelicanparts.com/porsche-911-technical-forum/462108-how-install-rs-carpet-make-look-good-post4538524.html#post4538524

[RWebb]

Overview:
http://forums.pelicanparts.com/porsche-911-technical-forum/416151-sound-reduction-minimal-wt-penalty-post4470213.html?posted=1#post4470213

http://forums.pelicanparts.com/porsche-911-technical-forum/462446-background-cabin-noise-reduction.html#post4539403

more info:

Sound Deadening question.

http://forums.pelicanparts.com/porsche-911-technical-forum/324499-interior-refurb-post3110805.html#post3110805

Interior project on my 87 911

Quieting wind noise

[jyl]

Very cool. Is there a spray adhesive that won't be a nightmare if you ever want to remove the glued material?

[RWebb]

most people have used a 3M spray -- there are 2 of them & I forget which one was thought "best"

I never heard anyone complain about the quality of a Wurth chemical either...

but none of those were for temporary usage -- maybe sticky notes??