I've read with interest all these postings on sound deadening the 4Runner. Because of this thread I've already done my doors with 2 layers of Brown Bread(It took one whole roll). It did help quiet things down some. Now I'd like to go farther. Road noise is the biggest culprit. I've already moved to quieter tires and new shocks. This is the next logical step.

Two Basic Questions to the Second Skin Audio Rep:

1. What product where would you recommend for the remaining interior surfaces on my 1997 4Runner SR5? Given my technical background I am casually interested in what the NRC is and more precisely what the STL db reduction is through these surface materials. These facts would allow me to interpret what could be gained by multiple layers of this or other materials such as carpet padding. Quality and longevity is what I'm looking for. Cost is also a factor (from a value received basis).

2. What do you think is the starting average db at 60 mph before this mod and what would it be afterwards?

Thanks

 

This might sound (no pun intended, lol)like a stupid question, but how much of a difference could carpet padding make (just under the carpet)? We just moved and I have a whole roll of good carpet padding, just don’t want to take the whole car apart and realize it didn’t make any noticeable difference. Would it make the floor feel too soft? What about moisture?Thanks

 

anyone?

 

carpet padding works great! i put in 120 square feet of eDead (www.edesignaudio.com), just like dynamat, and 100 sq ft of 8# carpet padding last week in my '84 4runner. it's amazing how quiet my truck rides now. i put the eDead everywhere except the roof, two layers on the doors, inner firewall, and floor in the front. then i used 3M spray adhesive to put carpet padding on the sides over the edead and also put the padding over the whole floor. i had some left over so i rolled it up and stuffed it in the side panels. well worth my $150 and 14 hours of time. i still have all the rear side panels and seats out so i'll try to take some pictures this weekend.

 

I put carpet padding down over thanksgiving. i dumpster-dove for some 8# scraps. Good criminey it cut the road noise by at least 60% if not more...

 

ok, thanks, im not sure what the padding is rated, but its about 1/4" to 1/2" thick, somewhere in between. Ill have to do this over the weekend, great when I can do something for free, or at least the price of the spray glue! Hopefully it really will make a noticeable difference, I dont really feel like paying for anything special when I can use this.

 

I'm doing my truck tomorrow. Stupid question but need to be sure. Did you guys who have put on the carpet padding remove the existing factory padding?

 

Nope, just pulled the carpet back (with stock stuff attached to carpet), cut and laid little tiles of new stuff, spray glued them down to the metal, and rolled the carpet back overtop. Bingo bango.

Good luck!

 

same thing i did, just make sure to make the padding smaller on the edges, or the thresholds will not screw down properly, hope that made sense, lol

 

o, and do it in a well ventilated area, that spray glue is not good to breath, made me feel sick for a little while

 

Thanks guys. Going to start on mine in a few minutes.

 

I did a really thorough job, took out every interior panel/carpet/seats in the whole truck, except the headliner, then cleaned everything down, vacuumed, then glued the padding down. I was surprised at how much of a difference it made. I did not take out the headliner because I figured it wouldn't make that much of a difference (i have a sunroof), plus I couldn't get the front o **** handles off, the screws were really tight. Might be good to have a bottle of fabreeze or oust. I can still smell the glue I used. Put in some baking soda in a dish last night, that helped a lot, then I used fabreeze tonight, hopefully by tomorrow the smell will be completely gone. My friends that always sit in the way back cargo area noticed that it was a lot quieter back there, and that the floor is really comfy, lots of layers, lol, my carpet pad, stock carpet pad, carpet, cargo mat. good luck!!

 

i can say that the headliner will make a huge difference. if you read my writeup, you will see that the entire section behind the moonroof has plenty of space to deaden.

bob

 

yea but on one side, i already stripped one of the brass screws holding in the handle, those screws are in really tight, no clue how to get them out

 

Finished the project yesterday but didn't do the headliner like dibble. Seems like a big job.

Well, today was a hot day in paradise and you could sure smell the peal-n-seal and the glue for the padding. How long will the smell linger? I'll try the fabreze tonight and see how that goes.

 

smell = about a week at the most

 

my smell is completely gone now, its been about a week, with a fabreze treatment about 2 days ago, its quiet, but you can sure hear a lot more wind noise, if only i could get the o **** handles off and pull the headlinder, at least a little bit so i could glue some padding in there

 

I notice that a current woe for people who went the cheaper route (edead, brown bread, etc.), they have an issue with peeling. On top of that, I have noticed that those who have complained are also located in warmer climes (phoenix, Hawaii, etc.). My thinking is that I am in the safe area since I live in Bozeman, MT (I am currently in Cali on summer vacation), so you know I have an icy cold time of it. I am basically thinking 200 sq. feet of edead, 8lb carpet padding, and a thin layer of spray glue to help it along. Any thoughts?

 

I did pns in the doors only so far, and it is a bit better. No smell at all, and it is pretty hot here lately. Need to get around to doing the carpet padding stuff, but, like Dibble, I cannot get the front grab handles off. The screws are too F'n tight. Until I can get those out, I going to wait. May try powertools the next nice day. If I strip it i guess I'll drill it out.

 

Alright, I have 2/3 of my Runner interior pulled out.. holy COW it rides noisily now! I ordered 5 gallons of Spectrum Sludge from SecondSkin, and 54 square feet of carpet padding for starters; and now I have a question: Throughout my 4Runner there are holes of the 6-inch diameter variety that serve no real useful purpose, except as an easy-access hole for the welding robots to assemble it back in '91... so I am wondering if I should cover those up with Aluminum tape so the Sludge can have more surface area to grip. Sounds like a good idea?