toyvet1

I am getting ready to renew the interior in my 79. I know what I need for a heat barrier. I want to know what to use for sound deadening. I was looking at some stereo sites and found that durasheild(?) will cost a arm and a leg. I want to cover the whole rear compartment,floorboards,doors and behind the dash.I would like to stay away from tar based products. Any ideas?????

Spook

How about a nice set of earplugs... hehe

Actually depending on your specific requirements I would try POR-15 in this scenario or call them and ask for a specific recommendation from thier lineup.

Spook
:reddevil

FeedVaal

If you looking for a cheap alternative, go to home depot and pick up the hot water heater blacket- cotton pile with foil backing. I underlaid my carpet with that and it also is a heat barrier.

Viken

if i'm not mistaken most insulation serves as both a heat and sound barrier, just depends on what you can afford... dynamat is the best, they offer several different products of various high prices... :D

BSeery

:iagree:

I am putting in the aluminum backed jute padding. You get it at Pep Boys, 4 foot wide roll, I think it's 10 feet long for $20. I have been told 2 will do a C3.

gmcclurg

I used Dynomat in my Datsun. Expensive, but it really works and I really didn't want to have to rip out the interior and do it all over again if I wasn't happy. There are some less expensive alternatives - one is called Brown Bread.

mrvette

You know the factory used a heavy tarpaper with jute behind it, and in conversion or factory window vans......in the rear on the floor and over the wheel wells is the same thing mostly...all formed and moulded for wheel wells, and it's FREE, at my favorite haunt....junkyards.....
find a newer van, fresher material....nice and clean....

GENE

Metal Wulf

get Brown Bread, it's just as good as dynomat extreme and costs less. Don't use the home depot crap.

KWIL

:iagree:
I installed brown bead under the door panels on my 80- it really quits things down.

Torcher

where does one find this "Brown Bread"? thx

Metal Wulf

http://www.b-quiet.com/

or Ebay
http://cgi.ebay.com/ws/eBayISAPI.dll...&category=1498


[Modified by Metal Wulf, 9:05 AM 10/10/2003]

Sigforty

I would say Dynomat. My brother uses it in his monte carlo, which is his stereo compitition car. He has two layers of the stuff and it really helps eliminate vibrations and road noise. For him he uses it to keep the bass pressure in the car, and eliminate that trunk rattle most cars with bass have. Just remember if you want to go quick any sound deadener will add excess weight to a vehicle.

Eddie 70

Metal Wulf, is this enough to cover our cars. I want to cover as much of the firewall and the rear storage area too if I can.

vettfixr

Here's how I did it. http://mywebpages.comcast.net/vettfixr/page14.htm

Metal Wulf

You should be able to get at least one layer down with the 70sq-ft. I don't know for sure, since I haven't gotten to the interior part of my restoration.

Enad

:iagree:

I bought 100sq ft of Phatmat (another cheaper Dynomat clone). I had plenty left over after doing the entire floor and both door panels. I'd say 70 or less.

Dane

Chuck Harmon

My vote is for Dynamat Xtreme. I bought at ebay prices, about $100 plus shipping for 36 square feet bulk pack. You will need close to two full packs. I did a careful before and after test with my ZO6. Without any Dynamat, the sound level was 80-81 db's on smooth asphalt @ 70mph cruise, no radio or vents blowing.

After installing Dynamat in both doors, trans tunnel, floors, and rear cargo area the db's dropped to 77-78. A 4 db drop is considered half the noise. Decibel ratings are not linear.

A tip used in Fixed roof coupes like the ZO6 is to make a partition behind the seats at the rear window to block the noise from the noisy rear compartment. There is a lot of axle, tire, exhaust, and other road noises that come through this area. One reason why station wagons are much louder than sedans. Anyway, the rear partition dropped the noise on the Z to 73db's.

The car is now very pleasant to drive. The radio volume does not need to be raised from zero to 70 mph. Conversing is easy. The foil lined bubble wrap insulation just doesn't have the ability to remove the resonance that the Dynamat does.

I did the entire interior of my 69 in Dynamat Xtreme too. I know it helps a great deal, but I didn't do a before and after test for comparison. Old R&T tests show db measurements of c3's to be about 78-80 using the same "A" scale (not "C" scale) that I used. The A scale measure sounds the human ear can hear. The "C" scale measures sounds over a much broader spectrum. You may think it is quiet; but, in reality something might be making a very loud and very low frequency noise that would register a high db reading even though you can't hear it.

Chuck