I have been trying to come up with something to replace the tar sound barrier on the inside of the firewall. I called a couple of local places and found the same tar stuff in 12" squares from autobody supply places. An upholstery place suggested woven jute (certainly period appropriate, macrame and all). Neither one sounded too good so I went to the local Lowe's.

I found a product maded by Armstrong flooring that is used under laminate flooring. It looks like it's made from recycled plastic grocery bags. Very light and plenty of dead air spaces. The roll is 100 sqft and weighs about a pound or so. It's about 1/8 inch thick so I'll double it up.

I'll let you know how it goes

Dave

I made a copy of the "tar thing" with modern engine-lid liner.

I cut it to size, then "bound" the edges with heating duct tape (the aluminum stuff, not duct tape.)

Glued it to the firewall with "super 3M".

Weighs less than a pound, and cuts most of the engine noise. Way quieter than stock.

While I was in there, I did the engine lid too. Now it goes "thunk" instead of "clinck".

And it looks pretty darn good, too.

What about neoprene? It is rubber is full of tiny air bubbles. Seems it would be a good sound insulator and vibration damper.

Like the mousepad material.

I can get 1/4" thick sheets of it for virtually nothing.

I used Dynamatt that I picked up from a stereo shop. It is made to go on
sheet metal to sound deaden. It works great ! has a self adhesion back
on it , although it is a little heavy.

I recovered my own door panels. The OEM panels have a thin yellowish sheet of foam that is inbetween the core and the vinyl.

I junked that flimsy crap, and glued down a 1/8th inch foam rubber onto the door panel core. I got the stuff from a carpet store. It didn't weigh very much, but certainly quieted noise from the empty early doors.

-Rusty

I'd pay good money for underwear made of that stuff..


M

never have to leave your chair, huh?

Maybe they can replace his regular straight jacket with one made from neoprene!

My upholstery friend is really into sound deadening. He told me you need to use two layers of different material to change the frequency as it tries to pass through. The change causes the sound to die.

Has anyone used that "Brown bread" stuff?

I took both sound pads out! But they would not help me now, because I put on a Flowmaster Brad had laying around his shop. Felt like my ears were bleeding.....I loved it! The people in Novato didn't though

I'm too old for that Chris. The organ at church makes my ears hurt so I need some kind of sound barrier.

Here's the stuff I used

Since it's so thin I used 2 thicknesses

Cushy but bounces back real quick

How much did the total amount of material installed in the car weigh?

Is it self adhesive or did you use spray???

Mike

I don't really know but I would guess a pound or so. Cheap too, $25 at Home Despot.

Eddie

I used contact cement. I hope it doesn't need to come back out.

Here's the interior going back in. I forgot to index the shift rod before I took it out so I need to adjust it. I'll leave the console out until then.

Dave

you're really in the put together mode now dave! what's the next big leap?

kevin

Next step is engine in (hopefully next weekend). Filled tranny, changed oil and replaced front engine mounts this morning. Sometime today I'll adjust the valves, clean up the grounds and connectors and replace the rear engine mounts. This week I have to replace a couple of exhaust studs.

Dave