So what have you guys replaced this stuff with? (sound deadening)

[drunkenmaster]

Hi Guys,

The time has come to start refitting the interior components to my car and I just remembered about the factory sound deadening on the firewall that I removed when it was stripped. Now this stuff was in pretty poor shape and looked like it was holding water, so what have you guys used as a substitute?

I was going to skip it, then I thought in the end it would be nice to eliminate some engine noise. Pics would be great.

Thanks

James

[240ZX]

There is this stuff called Dynamat thats good and maybe a little expensive compared to the stuff sold by MSA. A lot of car audio installers use it and it installs neatly. Thats about the best stuff I know of!

[xray]

I have not seen this material personally, but since CDM was involved in the factory-authorized Z restoration program, I figure it should be good enough...

classic datsun motorsports

Scroll about 2/3 down the page

FWIW,

Steve

[beandip]

D master , I used some stuff called brown bread that I bought from a company called B-quiet in Canada. It comes in a roll 12'' wide and 50' long and I used about 1 and 3/4 rolls , but did the whole firewall and floor as will as inside the doors and rear fenders. It is a self sticking foil faced product about 1/16'' thick or so and it limits the vibration of the sheet metal. Over this on the firewall I was able to use the jute insulation , origional stuff. How ever you might try a boat builder or supply . They use foil backed insulation for sound and heat around the engines. I used a product like this on the trans tunnel . I bought it on line from JC Whitney , it is about 3/8'' + in thickness and is foil backed . For this I used spray on contact cement. I also used it on the firewall and on the floor in the hatch area . Over the brown bread . I figure I used about 75 feet plus of the brown bread material. I looked but B-Quiet dident put there email address on the invoice and I cant remember what it is . I am sure someone will come up with it for you. Gary

[240 in OZ]

The stuff CDM sells is for LHD cars, as James is here in Australia he has a RHD car; there is probably a difference I am assuming...input?

Interesting to know if any Aussies have found a good substitute for the material available here in Australia.

Joseph

[Bambikiller240]

D master , I used some stuff called brown bread that I bought from a company called B-quiet in Canada. It comes in a roll 12'' wide and 50' long and I used about 1 and 3/4 rolls , but did the whole firewall and floor as will as inside the doors and rear fenders. It is a self sticking foil faced product about 1/16'' thick or so and it limits the vibration of the sheet metal. Over this on the firewall I was able to use the jute insulation , origional stuff. How ever you might try a boat builder or supply . They use foil backed insulation for sound and heat around the engines. I used a product like this on the trans tunnel . I bought it on line from JC Whitney , it is about 3/8'' + in thickness and is foil backed . For this I used spray on contact cement. I also used it on the firewall and on the floor in the hatch area . Over the brown bread . I figure I used about 75 feet plus of the brown bread material. I looked but B-Quiet dident put there email address on the invoice and I cant remember what it is . I am sure someone will come up with it for you. Gary

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

[speedyblue]

Go to a newsagent and browse through a car audio mag looking for ad's. Go to an out of town one so you don't risk being spotted by someone you know That should give an idea of what's available locally.

Alternatively, there is a web forum. Called something like Car Audio Australia. They would have covered it somewhere too.

[drunkenmaster]

Thanks guys,

I am pretty familiar with what a lot of the audio guys use, but was interested to see what Z enthusiasts use who care about preserving the car as well as just stopping the rattles.

I was thinking of using a product like dynamat/brownbread/serenity-max etc, Ideally I didnt want to adhere anything to my nice new paint but I guess for best results that is unavoidable. It should also prevent water to metal contact to some degree also. As for putting the fabric based insulation over the top, that is an idea also but I was questioning the OEM style material as it is not in full contact with the firewall, therefore not really adding and mass etc.

James

[260DET]

The aluminium foil faced material is good, depending of course upon its quality, the face is easy to clean, non absorbant and heat reflective. I'd go to a specialist insulation place though, they are around, there are even insulation type paints available.

[mrdatto]

I can't vouch for it as I have never used it myself, but Super Cheap Auto sells a product called 'Sound Shield'. It comes in rolls/sheets of about 1.5m x 1m from memory and is the foil backed stuff with a thin layer of bitumen inside, which is supposedly excellent for both sound deadening and heat transfer.

It's not cheap at about $40 a lot but a friend of mine has put it in his fully restored mini and said it seems good quality and is easy to work with.

May be worth a look.

[drunkenmaster]

Does anyone have more pictures of the orginal matting?

I cant remember how it all fitted especially in regard to thinks like pedal boxes mountgin over the top i.e. does this mat sandwich between anything bolted to the firewall or was it cut in those places.

[Mike]

I have a few pictures of the b-quiet stuff on my car.... Check it out at the following link: http://www.classiczcars.com/photopost/showgallery.php?cat=3067