I am getting ready for my first winter project: reduce the temperature in the interior. I have read a few posts regarding this issue and plan to strip the entire interior and install a product called Dynamat Extreme. This should do the trik as well as reduce interior noise and vibration.
Comments would be appreciated.


[Modified by Andy_A, 4:57 PM 1/1/2004]


[Modified by Andy_A, 4:58 PM 1/1/2004]

 

It works great but is really heavy and expensive. I'll bet I put 100 lbs in my '97. Lowes has a very light, aluminum backed foam product that seems to work just as well. It's WAY cheaper too. About $15 a roll. I'm in the process of tubbing my car right now and I'll be installing this all over the back section.

 

Man you guys are ambitious. I am at the other extreme. I have only put a partition in mine. I am quite happy with the car as is. Good luck on your project. :thumbs:

 

I did my entire interior with the lighter product and am happy with it. You want to get the greatest db reduction along with the lightest weight. I rpobably added 30 ibs to the car, but it has made no noticeable difference in mpg or performance. Do a search for Mike Mercury and his sound dampening write-up. :)

 

Lighter in my case would be better. :yesnod: :thumbs:

 

What is the Name of that ""PRODUCT' Lowes carries??
i WANNA KNOW the brand if possible :cheers: :party: :party: :party: :party:

 

Andy_A, I think be best approach is first to get rid of resonances and vibrations in the glassfiber with the special compond I mention below and when apply some kind of sound dampening mat. This is my install:

I've been annoyed by all resonance and vibration sounds from the area behind the seats. The major problem seems to be the big glassfiber areas in the rear working like a loudspeaker cone.

I was in contact with professional car audio builders and a idea came up from their work. When building a high end car audio system they start with removing all interior of the car including door sides, center console, instrument areas and so on. When they spray or paint a special resonance/vibrations killing compound on all surfaces in the car. It adds about 8 pounds of weight if you do the whole car but I think it's a minor problem. The result is extremely resonance/vibration dead car which is one of the most important issues to get high end audio in a car.

I'm not into car audio but why not use the same idea to get rid of all annoying sounds?

I removed all of the interior from behind the seats and all the way to the back. I painted the resonance killing compound on all surfaces in about 1-2mm thickness. The compound is called dbAxe in Sweden and I'm sure professional car audio builders in the US have the same or similar compound.

Please note that this compound is no sound dampener, it only removes resonances from the interior/glassfiber. You will still have the same sound level from the rear tires and exhaust. To get the car a little more quite I added a 10mm sound dampening mat from behind the seats and all the way back and installed the stock carpet on top.

I drove around for a while with the car as it looks on the pictures and directly noticed that I only heard the noise from the tires and exhaust, nothing else !

I'm extremely pleased with the result, no resonance sounds, no vibrations sounds and the sound level from the rear tires and exhaust is much lower. Mission accomplished

The picture below is taken after applying the dbAxe compound.

 

I installed aprox. 100 sq. ft. of Dynomat Extreme in my car.
Stripped complete interior out while installing stereo system, including door panels, and put in the dynomat.
This made quite the difference in lowering the annoying road noises associated with these cars.
Even though it was quite expensive and added extra weight, not to mention a PIA to install, it was worth it all to me.
Search the internet to find best prices. I found it in bulk packs(36sq.ft.) for $125 with free shipping from "The Zeb" a few months back.

 

I've just finished lining the entire cockpit, including doors, other panels, etc. with heavy duty Dynamat. The result if almost miraculous. You just don't realize how annoying the various noises,creaks, etc. are in our cars until they're gone. As far as I'm concerned, this is a most worthwhile undertaking.

As Andy pointed out, this stuff is heavy and pricey: since I don't race (and have an abundance of power) I was willing to accept the tradeoff.

You'll enjoy the result; go for it.

 

I also insulated my C5 with the foilbacked foam as per Mike Mercury write up.
Did the entire interoir. Worked great. see write up at
htt://mikemercury.home.att.net/sound.htm

 

All good info. Thanks guys. :thumbs: :seeya