? about DYNAMAT

[Tom Welch]

Jagarang, you are right about the firewall issue. The outside will be detailed and the space on the inside will be limited. All of this is a study in compromise anyway. As for the vibration damper if you measure a section of floor, say the pass side front footwell. For example lets say 24"x24" half of this area is 12"x12". put this as close as possible to the center of the panel measured. That should do it. The flatter and smoother a panel is the more it will tend to vibrate. The stiffening ribs that are seen in the floor of your car lessen the vibration of the panel at certain frequencies. This is a good thing. The vibration damper that you add will absorb some of the vibration and convert it to heat. Not noticeable. The foam works great but there are drawbacks, too. Foam that is open celled will absorb water and become useless until dry, just like most insulation will. The exception to this is natural wool fibers. I dont see wool becoming the next big insulator for cars, besides, it won't stop sound. The firewall is the biggest area of concern for noise supression. Foam here would probably work very well when sealed properly. Foam is sometimes lighter on the pocket, but not always. Not always lighter in weight either. I have experimented with quite a few foams and durability under carpet is the biggest issue I have found. For the roof and package tray and firewall it is ideal. The doors too. The floor is another thing. Still working on this one. The best solution yet is heat shield under the floor, vibration damper on the inside of the floor, followed by a foil/mylar covered material yet to be determined. Maybe, inspite of what I said yesterday jute type material may be the best compromise for this area. Still working details on the kit.