this should help keep the noise of the swampers down and the overall ride quieter and keep the stereo loud. It really makes the truck sound like a solid piece of metal. I have put it in one door, the difference between the sound of the door with it and the door without it is amazing.
COOL. I been wanting to do that to my 80 I used to have a nissan pathfinder that was completely dynomatted and it made a huge difference. But that stuff is spensive!
i don't plan on lining the entire enterior, just around the wheel wells, in the doors and over the drivetrain to hold heat down. If i did the whole enterior it would probably cost about $400.
If I recall from my previous life, are there different thicknesses to that stuff? IF so, what did you use? You did a really nice job!! Looks like quite a bit of work!! Could you give us a time estimate on completion?
Dynamat does make another product called dynapad (i think). It is basically just black foam padding about 1/2 inch thick. It has an addhesive back just like the dynamat (by the way, it is VERY sticky so try not to screw up because it's almost imposible to get back up). I chose not to use it. If i really wanted to spend a bunch of $$ i would have done the floors in dynapad and the doors and everything else in the mat.
It's tough to put a time limit on it. Just the rear wheel wells (which are 90% finished) and around the shifter took about 1.5 - 2 hours. Just taking everything out takes a little time too, but it's worth it. You find all the little peanuts, french fries and about $10 in loose change that you can clean up.
Where you using a heat gun? When I did mine about 12 years ago the dynomat had a sticky backing but to really get good adhesion to the metal I used a heat gun as I applied it. Is this a step that is no longer necessary? Would be cool if it was.
It's officially called Dynamat. The original is an adhesive sheet of pressed asphalt.
Now they make several different versions, including a heat shielding version, that I think Mr. Jungle used...
There are also companies that make spray and roll-on dampners. The idea is to add mass to the panel, to absorb energy (ie vibration). The Dynapad serves as insulation, and a mass addition. W/ enough of this stuff, you can make your 80 interior sound like a Lexus... but it's heavy... and smelly...
You can just buy generic asphalt sheets from JC Whitney and get the same effect for less money, but there isn't the bling factor associated w/ Dynamat...
IN the old days of my SPL competition, we foamed our cars... That's right.. cans of expanding foam in all the air spaces.. kept rattling to a minimum...
it is called "sound dedening material" "sound dampening material" "Noise Absorption Material" etc, the original is Dynamat and it is very expensive considering it is a sandwitch of tar paper, foil and adhesive, there are a lot of copy cats out there that are a lot cheaper, you can get it at car audio places but probly the cheapest is on the web
Raven is correct, i bought mine from a local audio install store. I think ordering it and having it shipped could be pricey since it's heavy. I was surprised, the box that i bought (trunk kit is what it was labled) weighed about 30 pounds.
reffug, no heat gun and i'm glad. It was allready tough enough to get it in corners and such. I guess the fact that it was 85 degrees out yesterday made it easy to apply.
I found the best application method was to lay it out with the adhesive cover still on, bend it to the shape you need, cut it with scisors and then apply carefully starting in the center and working out.
I thought about the expanding foam, but, if there was something that needed to be fixed, replaced or if i wanted to run a wire someplace the foam was there would be huge issues with trying to cut the foam out and such.
I'll try to post a pic this evening when i'm finished.
Does anyone know what sound deadening is put in the LX's, and where. I've heard folks indicate before that the LX's had more of this than the LC's, but didn't know if it was something similar to this Dynamat application or totally different.
Does anyone know what sound deadening is put in the LX's, and where. I've heard folks indicate before that the LX's had more of this than the LC's, but didn't know if it was something similar to this Dynamat application or totally different.
I have seen some rubber/tar mat on the floor and side body panels, it does not cover everything, it is laid out in oddly shaped patterns that cover about 50% of the area, it does not have the aluminum backing like the aftermarket products, not exactly sure how useful this foil is anyway
From memory when I was the Lexus Product Planner, we put the stuff in several places (sheetmetal sandwich):
Rear footwells - nice effect
Entire firewall - massive effect
Front footwells - big effect
You'll occasionally run across externally applied mats of a tar like stuff on the inside of body panels and such. For instance, the bottom half of door panels on the inside of the outer sheetmetal. Really makes a big difference and Lexus pioneered that layered sheetmetal. The latest LS now has dimpled sheetmetal in the floor so it is difficult to vibrate, for instance. Neat technological direction.
That center console job is going to make an astonishing difference. The first FZJs in 93 made too much noise in that area and an external sound shield was developed on a fast track for midyear production. That dang manly A442F. I think you can see it as a metal shield above the transmission and under the console. All subsequent models had greater sound attenuation here and elsewhere.
