I'm getting to where I'd rather hear my stereo instead of road and exhaust noise. It's getting near time to start thinking about the interior now that I have almost finished repainting my 4R.

As many of you know, the 1st gen 4Rs are like tin cans inside. There is very little sound insulation in them. Has anyone had any experience with stick-on sheets (like dynamat or RattleTrap) or spray-on sound deadening for the interior of the 4R? Does it make much difference?

 

https://www.yotatech.com/forums/f96/...ulation-11179/

theres another thread here somewhere with a ton of pics on a 4runner

 

I did some of it. It worked okay, but you really have to go to town with it.

I did strips, but I think the only way to really get it to work is to coat the entire inside of the outer body panels, including the tailgate and front doors.

Now, here is the issue with front doors. I had a piece in there, this summer, and it had come loose, but in the heat, the sticky stuff got all goey. It stuck to my window, and it took 2 hours to get it undone. You may want to spray some sort of sealant over the mats after install to prevent that from happening.

 

simple solution pull out your motor and plan a giant redwood instead or install a cool sound system

 

I was thinking about doing all the exterior body panels with either RattleTrap or edead and then placing a second layer under the interior trim panels. All of the interior panels are off right now so installation would be very easy.

One thing I've noticed is that this stuff isn't cheap. Dynamat is horrifically expensive.

 

Dynamat is great stuff. You'll pay for it though.

Your plan sounds good. I doubt it will be silent, but it will be quieter.

 

I've noticed with my 2nd gen, that most of the road noise comes from in the back, inside the quarterpanels where the rear speakers are. Maybe some sort of soft rubberized foam stuff would work there. You won't ever see it, so if you want a less expensive dynamat alternative, that might work. I'm not sure what kind to use, but maybe some hurculiner would work back there.

 

Does the spray-on /brush-on sound deadener do much? It offers rust protection on the inside of the quarter panels unlike the stick-on stuff which might trap moisture underneath.

 

There used to be this stuff called "Brown Bread" but it looks like they changed to a new design/name called "B-Quiet Ultimate"

Cheaper then Dynamt http://www.b-quiet.com/brownbread.html

My buddy used Brown Bread on his Talon and it made huge difference. I would imagine the new stuff would only be better..

 

my cousin did his 91 explorer with Dynomat, top to bottom, front to back, everything was taken out and covered and i mean EVERY SQUARE INCH was done, and MAN what a difference! i was going to do it but it significantly adds a load of weight! but it makes the world of difference! i'm not sure about the fiberglass top on 1st gen 4Runners. and my cousin was into the bass competitions for awhile, with 4 14" JBL 1000W subs in a custom enclosure, it was recorded that his decibals hit 3 lower than a Jet Engine!!!!!!!

 

yes i truely does, i did my cargo area inside and out, and the road noise is considerably less, i just used that rocker guard

 

How many square feet of stuff does it take?

 

I just put dynomat in my front doors and noticed a considerable difference on road and exhaust noise. The music is much more enjoyable now.

 

Lowe's sells a product called "water & ice shield" made by Grace.
You can purchase a whopping 108 Sq.Ft. roll for about $80.
Compared to Dynomat and other brands, it's practically the same thing but per dollar, you get 3x's the amount. The stuff is thick, flexible, and super sticky. It works a lot better than i expected.
My inside doors are getting covered with it and i'll still have enough to use on 2-3 more vehicles...

 

I've read about the Lowe's soundproofing, but there are two concerns that keep re-appearing. The first is the smell and the second is that the stuff melts in the hot sun.

 

I did the ice & water shield inside the doors, as well as a liner for the back of the cab (mine was just bare metal when i bought the truck) It cut down the noise a lot.

the stuff will smell tarry for about a week. i put it in in the summer and didnt have any issues, other than the fact that it's hard to keep it from sticking to itself so it's probably better as a 2 man job, or using relatively small sheets.