Sound deadener project

Rusty67 said:

Get read to read... A LOT


http://www.sounddeadenershowdown.com/

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I read this a couple of weeks ago, very informative. Good stuff.

This sound deadening/insulation question seems to come up a lot. A long while back there was a post that included a link to an alternative for lizard skin. Seems the guy used 'micro spheres' mixed with latex paint instead of a more expensive product and was very pleased with the results. I bookmarked the link...

http://www.hotrodders.com/forum/alternative-lizard-skin-103610.html?referrerid=65148

I looked at all the commercial stuff and decided to try a redneck option. I went to Lowes and bought some Kool-Seal, the white elastomer stuff they use to seal up roof flashing, trailer roofs, etc. I can't see a lot of difference between these types of products and the brush on/spray on sound deadeners on the market, and according to some of the "showdown" type websites, max contact between the surface and the product is a major player in effective sound deadening. You can't get much better contact than painting this stuff on.

Anyhow, I tried it on a piece of sheetmetal and it seemed to work pretty well, so I brushed it on the doors, trunk, and rear seat area of my '66 coupe. Had to put on 5-6 heavy coats (over a three-day period) to get a thickness I was happy with. Of course, I don't really have anything to compare it with, but there seems to be a pretty significant reduction in noise and resonance. The only real drawback was the 3+ weeks it took to get all the paint-like smell out of the car.

So where could a person get the RAAMmat mentioned in the comparison? Seems like its the best deal.

Decurion said:

So where could a person get the RAAMmat mentioned in the comparison? Seems like its the best deal.

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http://www.raamaudio.com/cgi-bin/index.cgi?p=pr

Kevin

I've started using "Thermo-Tec Cool It"

http://store.summitracing.com/partd...&part=THE-14620&N=700+400356+115&autoview=sku

Its just like Dynamat Extreme but much cheaper. Dynamat Extreme seems a little heavier if you hold two equivalent sized pieces at the same time, but its close. So far I've been very pleased with the Thermo-Tec product.

bacfire said:

I looked at all the commercial stuff and decided to try a redneck option. I went to Lowes and bought some Kool-Seal, the white elastomer stuff they use to seal up roof flashing, trailer roofs, etc.

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To make the redneck version a little more hi-tech you can get the Kool-Seal Xtra-Lite. It is similar to Lizard Skin as it has the microspheres in it. If the Kool-Seal works well, the Xtra-Lite would work really well.

Disclaimer- I haven't actually used it yet, but from reading on other forums, sounds like a very economical effective alternative.

The only place I've seen it is in Ace Hardware stores, $90 for a 5-gallon pail.

http://www.acehardware.com/product/...eal+xtra-lite&origkw=kool+seal+xtra-lite&sr=1

My local audio shop guy told me to start with minimal amounts of sound deadener, drive the car (if possible) and add as needed to get the desired sound deadening. A full box that is required to cover the entire floor/trunk area of my fastback would add too much weight and cost more than I care to spend for the stuff. They use Hush-mat, I've got (4) 1'-0 x 2'-0" sheets in the car currently and need to get it on the road before I know if I need to add more. Hell...it's a weekend driver, does it really matter?? Exhaust will probably be too loud to notice anything rattling...

The best way to get rid of all the rattles and noises is to get a complete interior screw kit. These cars are way too old to have all the original screws left. Admit it most of us can take the complete interior out by ourselves in less than an hour.