I've read reports on Dynamat's ability to reduce noise and heat. Since it's cost is about as much or more than my new carpet, I'm wondering if its worth it? I have a full exhaust 2 1/2" with the Walker Dyno Max 17749 mufflers. They are loud when at full throttle but, fairly mellow when cruising. Should I consider Dynomat?
I covered up under the dash all the way to the rear bulkhead, and the doors and rear side panels in my 1964 Skylark Convertible. It does cut the heat and noise a great deal. I still have the "drone" at about 1850-2050RPM, but do not "drive" at that RPM. Typically, I am about 2200RPM unless on the highway, then at about 3000-3200RPM, and no drone. I actually thought the exhaust was much quieter than I "wanted", but a friend was following me and said, it was a very throaty nice sound and "nice music" when I "turned it up!" (Dynomax 17749 mufflers). So even a ragtop, up or down, the exhaust and road noise are greatly diminished. I think in a hardtop, it would be even better. And the heat. The nail-head puts off a lot of heat, and the mat cuts that very well. I used a pair of reverse split cow work gloves and a tennis ball and a towel and tennis shoes to press and "burnish" into all the contours. If you use your bare hands, you will get "paper cuts" all over. I also bought a couple extra rolls of tape, as it can be used for lots of other things. Alcohol will take the printed ink off the tape in a second. To cut, I measured, used a straight edge and a razor knife to slice through the aluminum side of the mat, and then quickly "tear" the mat, and it does well. (after trying to slice all the way and having it grab and tear/bunch up). Put the carpet right on top of it when I was finished. You can do the whole car in a few hours. And piecing in or "reepairing" any spot is simple and does not look bad. (it's all hidden anyway). Hope that helps.
Shop around. Dynamat holds the product recognition but are not the only producer. Lots of cheaper options out there.. I put down the generic stuff in every car i do. I'm real happy with the results.
A buddy used a product in a truck he had called "phatmat" that he said worked well and was considerably less expensive than dynamat (at the time anyway).
I wondered about 5 years ago what to use under the carpet of my GSX Stage 1 so...before I went out and spent the bucks on Dynamat I called them and they sent me a sample. I then mounted it on a piece of sheet metal along with 3 other competitors products and a product called EZ Cool was the best at repelling Heat and sound by far! The cost of EZ cool is... I would say a third of the price of Dynamat. And once you put Dynamat on, good luck trying to get it off if you have to move it or reposition it with the gummy tar backing. The EZ cool is much lighter than the Dynamat too and you just cut it to shape then spray one side of it with 3M spray adhesive #08090 and form it around the floor pan. It comes in a big roll so you can easily buy enough of it to do two cars and save gobs of money over the Dynamat. Also when I mounted the EZ Cool on that piece of test sheet metal, I used a heat gun on the back side to see how long I could hold my hand on the different competitors products and the Dynamat you have to pull your hand away in about 15 seconds because the heat is unbearable but with the EZ cool you can hold your hand on that for almost indefinitely. The EZ cool is much lighter and about a quarter inch thick and has aluminum material on each side and the inside is a closed cell bubble type plastic. I have had it in the GSX for four or five years and have had zero problems. I noticed right away how much quieter the car was although now I don't notice it that much after driving it for four or five years. I discovered the EZ cool in a Custom Rod Magazine and if I can remember correctly, its available from a company I believe in Texas called Harbour Freight and it's not the Harbor Freight that we have in the big cities that we buy cheap tools from. I bought a roll of it direct and that was enough to do two cars with leftover and I don't think I spent over $110. I'm going to use the rest of it on my 69 Buick convertible. Dynamat may be good for some purposes (I can't imagine what?)... but for heat and quietness EZ cool blows them away in my opinion! Every manufacturer says their own product is the best but the only way to prove that... is to test it against the competitor products like I did and then let the materials speak for themselves! Oh ya...and I just used the aluminum shiny duct tape that you peel the paper off of to seal any gaps. You can get a roll of that at Lowe's or Home Depot.
I am starting to put new carpet down and wondered if I should plan on using jute as well as a thermal barrier material. I noticed in some places the factory used jute and I don't want to wind up with a saggy, lumpy looking floor. Also, why do I have to order everything I need from an on line source? Don't local stores and parts houses carry anything anymore. I just hate waiting the week or more for the stuff I need. Rant over. Thanks
Is this the same EZ Cool product that you used? https://www.amazon.com/Vehicle-Insu...pID=51YY5PfgBxL&preST=_SY300_QL70_&dpSrc=srch Thanks, Steve
I used Fatmat in my last serious car audio build, was MUCH cheaper than Dynamat. I ordered it off a vendor on EBay. Using a heat gun with a golf ball to adhere it and form it to the body contours worked well.
That's it. Good price too. I only bought 40 sq. ft. as that is enough to do the interior of my car. If you want complete coverage including under the back seat and the trunk, 80 sq. ft. should be enough.
I used Fatmat on the last car and it worked very well. Seriously considering doing it again not only keep the heat out but to retain that precious cold a/c air.
Is the EZ cool squishy under the carpet with the air pockets, or fairly firm? Combined with the jute?
