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retro74 retro74 is offline
Registered User
Join Date: Jun 2001
Location: Ellicott City, MD, USA
Posts: 99
Couple of things:

The link above to

has a comma before the / so it doesn't work. Try this link:

I found some stuff on ebay (search under Dynamat).

Questions to the floor of experience (that makes you all "Mavens"):

1. Engine pad is rubber backed by some weird hair-like stuff. It holds water and I scraped it all off. Pad is heavy.

2. Inner pad in passenger compartment is rubber and heavy.

3. I recall from my physics of high fidelity class in college that random pockets of air space would "absorb" sound by preventing it from bouncing around, etc. We did some cool experiments with live rooms (hardwood floors, no pictures on the walls, etc) and then deadened the room with stucco paint on the ceilings, area rugs, pictures, curtains, etc. So flat rubber that weighs a ton is not the way to go. Your car can be lighter and quieter. Take the weight savings and do the doors too.

4. The Engine firewall can be painted with undercoating (Schutz) or bed liner to get the random patterns that will deflect the sound. It is lightweight as well. Adding pads over that would be even more effective.

5. Under the engine lid and back window? Moisture evaporation flows upward, so be careful about air pockets that could trap water. Treatment before insulation, with epoxy sealers, POR-15 or similar couldn't hurt.

So, does anybody have experience with these ideas and such?


Last edited by retro74; 04-06-2002 at 06:47 AM..
Old 04-06-2002, 06:25 AM
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