SCW said:
Wow, very ambitious project. That must be your Jeep on the Second Skin forum?
Is it back up an running yet? How do you like it? I did a 1/2-assed attempt to cut the road noise by adding an extra bit of carpet pad in the storage area behind the back seat. Then I picked up some rubberized undercoating and hit the insides of the door skins pretty heavily. This actually did help quite a bit, I don't have the stereo turned up as much anymore and the sound is much better. I'd like to try some more of something, but I think I'll focus on making the exhaust a little more toned down (Flowmaster 70 & 2 1/2 pipe), if I can get it a little toned down it will help a lot, but I don't want to sacrifice performance so it's a balancing act.
Some of the things that have REALLY made a difference though was removing the roof rack rails (crossbars, rails are still there if I need them) and replacing the clutch fan with an electric. I was surprised how much difference that made.
yup, same nick over at ss forums. It's still looking about like it does in the last pic in my OP. I was able to put adhesive under most of it yesterday, but didn't get near what I wanted done because I can barely move my head - I think I got a sore neck from bending over wrong while scrubbing all of the interior trim on Fri eve.
Definitely saw the most improvement with the vinyl barrier, and most of that with the section up by the firewall and passenger floor. Of course, there's currently a hole in the firewall blocked off only by a piece of cardboard, so I'm sure that had something to do with it. Everyone says the doors make the biggest difference and I haven't even taken those apart yet.
I think what started this all was that after 2(?) years I got tired of my Magnaflow. I went to Midas and told them I was sick of it, and wanted QUIET. Whatever they put on toned it down some, but definitely not stock. It's alright around town, but it bothers me on the highway. My personal experience was that the muffler had not effect on performance, but ymmv. Thanks for the tip about the rack and fan- I'll have to check those out.
langer1 said:
Will I'm looking for something to improve the sound from some outdoor speakers with a metal housing. They sound tinny but otherwise good.
Outdoor speakers outdoors, or in your jeep? What kind of metal housing, and how are they set up?
knottshawk said:
Lilred.... If you had to choose between the Damplifier layer and the third layer, which would you do? I can't afford both. I'm thinking of doing the damplifier and then buying some extra carpet padding or some local open cell foam to add to the carpet padding....
Tough call. I saw a result with both. The barrier was a more noticeable difference, but it was on top of two other layers of material, so the effect may have been synergistic. If I had to pick one or the other, I would probably go with the barrier material for the floor of the jeep.
However, everything I've read about sound deadening always says you will get the most noticeable results from doing the doors - and you don't want to use open cell foam in the doors. I haven't done mine yet, so I can't comment on the difference. To keep costs down, you may want to consider using damplifier in your doors and adding just barrier or just carpet padding to the floor. Might want to budget for a can or two of 3m super90 spray adhesive at $12 a can, depending on how flexible the padding is.
The jeeps actually come from the factory with a foam/vinyl barrier on the firewall, so you wouldn't have to take apart the dash and do the firewall area like I did, just up to (and maybe a little behind) the mat.
