Interior Noise Reduction

[Midnite]

I've been following the noise reduction threads in a couple of the other forums, and was wondering if anyone's tried installing sound insulation in their first gen.



Thanks,

Mike

 

[rlyons]

Haven't tried too much yet but would like to tone it down a little. Don't get me wrong, I love the diesel sound but it is a little loud in the first gens. I would like it to be more like the bigger trucks where you here the diesel sound but you can still hold a conversation above it. A lot of noise comes through the fender openings at the front of the doors. I replaced my door seals and that helped some. I would be interested to hear any suggestions/ideas anyone has on reducing the noise.

 

[jdurham]

Try this:



http://www.dynamat.com/

 

[MAX A/C]

Midnite- I installed Dynamat, and am very happy with the noise reduction. It's still not as quiet inside as an '01, but it did make a noticeable diff. I did not take any before/after dB readings, I'm just going by ear.



I took out my seats, carpet (including the back wall), and dropped the headliner. I also put in some strips on the door skins. Be careful about building up too high where the pass seat rubber pads meet the carpet-- too high, and seat won't want to latch.

Again, a worthwhile project, but don't expect miracles.



Scott

 

[Midnite]

Well, I wasn't expecting it to be like an '03 or anything, I just get tired of almost having to yell in order to have a conversation. I love the diesel sound, and I wouldn't want to give that up for anything. I would like to mute it, and also eliminate as much road and wind noise as I can though.



Scott, how hard was it to take down the headliner? Were there any gotchas when you pulled it out, or the carpet?



Thanks,

Mike

 

[bkokotovic]

Brown Bread

Seriously,



do a search online for "Brown Bread".



This stuff is better than dynamat in my opinion. It is adhesive backed, and relatively permanent when mounted properly. It takes the kinetic energy from vibrations and turns it into heat (which you won't notice). This is the stuff used on cars that compete in stereo competitions. I've used it on my '72 datsun with great results. You can stack the layers of it for an even greater sound deadening performance. Kinda pricey, but so is dynamat.

 

[JLEONARD]

Interesting.



http://www.b-quiet.com/brownbread.html

 

[MAX A/C]

Midnite- Sorry it took so long to answer your questions... Dropping the headliner is just a matter of removing the perimeter mouldings, and the dome lite lens. If I remember correctly, I just unscrewed the dome lite base and turned it so it fit thru the hole in the headliner. I did not take my headliner out of the cab, just worked with it laying on the seats/dash/whatever.



Carpet is straightforward, too. Hardest thing is reinstalling--lining up the door sill plates with their original holes--use an awl or nail to locate the hole.



Road noise is diminished noticeably, but it doesn't do anything for wind noise.



Hope this helps.



Scott