Quick and effective steps to improve the level of noise in a d110 - Defender Source
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  #1  
Old June 18th, 2013, 07:02 AM
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Quick and effective steps to improve the level of noise in a d110

So you have a new 110. Your least favorite "feature" is the noise without headliner or really more than rubber floormats.

What are the steps you'd do to quiet it down so you could say hear the cell phone ring.

1. Exmoor rubber matt thing worth it (700$ thing)?

2. Headliner alone...have this in a box.

3. Dyanamat clone junk under headliner/matt?

4. Carpet...

5. Engine cover ...put this on...got it via ebay UK.

6. Bedliner under truck (is there a downside to this...as in if you have to take it apart some day...>?


TIA.


Jeff
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  #2  
Old June 18th, 2013, 08:19 AM
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Dynamat the hood/bonnet, floors and roof.
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Old June 18th, 2013, 08:57 AM
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You need to seal the air movement into and out of the the cabin ... as much as possible ... I would add the new door bottom seals as there is a lot of air movement by the door bottoms.
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Old June 18th, 2013, 08:58 AM
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You will see the most dramatic noise reduction by putting Dynamat on seat box, floor, tunnel and bulkhead then put a seat box cover over it. You will see the least amount of improvement by putting Dynamat in the tub and roof. Engine noise should be worse than road and wind noise so start up front.
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Old June 18th, 2013, 09:11 AM
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Quote:
Originally Posted by jcb-memphis View Post
So you have a new 110. Your least favorite "feature" is the noise without headliner or really more than rubber floormats.

What are the steps you'd do to quiet it down so you could say hear the cell phone ring.

1. Exmoor rubber matt thing worth it (700$ thing)? I WOULD STILL INSTALL DYNAMAT OR OTHER CLOSED CELL INSULATION ON FLOORS, SEATBOX AND BULKHEAD. THIS DEALS WITH HEAT FROM ENGINE AND EXHUAST AS WELL AS THE NOISE. I MOUNTED MINE TO THE BOTTOM SIDE OF RUBBER FLOOR MATS (I DID NOT LIKE THE IDEA OF STICKING ANYTHING DIRECTLY TO THE FLOORBOARDS), DIRECTLY TO SEATBOX, UNDERSIDE OF SEATBOX LIDS AND BACKSIDE OF FOOTWELL TRIM CARDS. I ALSO DYNAMATTED THE BED AND WHEEL WELLS.

2. Headliner alone...have this in a box.

3. Dyanamat clone junk under headliner/matt? WHATS THE DOWNSIDE ON INSTALLING IT BEFORE THE HEADLINER GOES IN. IN TEXAS THIS STEP IS MORE ABOUT SUMMER HEAT THAN SOUND BUT IT DID IMPROVE THE NOISE LEVEL SLIGHTLY. IT REALLY CUTS DOWN THE HEAT. I ALSO DID THE INSIDES OF THE DOORS.

4. Carpet... LITTLE VALUE BUT TO COVER THE DYNAMAT.

5. Engine cover ...put this on...got it via ebay UK.

6. Bedliner under truck (is there a downside to this...as in if you have to take it apart some day...>? I WOULD NOT DO THIS ONE.


TIA.


Jeff
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Good luck.
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  #6  
Old June 18th, 2013, 09:12 AM
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Quote:
Originally Posted by Manimal View Post
You will see the most dramatic noise reduction by putting Dynamat on seat box, floor, tunnel and bulkhead then put a seat box cover over it. You will see the least amount of improvement by putting Dynamat in the tub and roof. Engine noise should be worse than road and wind noise so start up front.
tire noise and air noise are major contributors to cabin noise.
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #7  
Old June 18th, 2013, 09:36 AM
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Quote:
Originally Posted by Reese_D90 View Post
SEE ABOVE
Good luck.
Very cool stuff - what is over the dynamat...it looks really nicely done...and on the roof. Is that some sort of product, paint, foam, carpet....if you don't mind (please take as a compliment) I'd like to copy you.

All the posts have been helpful. I plan to just do it all. Engine, tires, wind, the works. My main noise source by far is the engine so far...but once that is addressed the other issues might crop up, so I am just doing it all and saving the back and forth...the copy cat dynamat stuff is cheaper, but the finished look appeals even more....so I want to go with a solution that might be easy on both the ears and the eyes.

Again, thanks everyone! Appreciated immensely.

Jeff
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  #8  
Old June 18th, 2013, 10:07 AM
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Dynaliner is the foil backed stuff. Dynamat is the darker closed cell foam that cuts down on the heat and noise pretty dramatically. I used 1/2 inch on the tunnel and 1/4 on the roof.
There may be cheaper alternatives. Materials cost me about $400 for roof, tub, floors, seatboxes and doors.
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  #9  
Old June 18th, 2013, 10:31 AM
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http://www.mcmaster.com/#sound-absorbing-foam/=n8w4ha

The best stuff I have ever used is McMaster PN #5692T13 (non-adhesive) and #5692T49 (adhesive).

I actually buy the adhesive version of the foam and stick two 1" thick sections together to make an ultra-thick non-adhesive 2" thick foam section.
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  #10  
Old June 18th, 2013, 10:35 AM
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Quote:
Originally Posted by Reese_D90 View Post
Dynaliner is the foil backed stuff. Dynamat is the darker closed cell foam that cuts down on the heat and noise pretty dramatically. I used 1/2 inch on the tunnel and 1/4 on the roof.
There may be cheaper alternatives. Materials cost me about $400 for roof, tub, floors, seatboxes and doors.

Dynamat is not foam, its rubber with an thick aluminum foil layer. Dynaliner is foam with a thinner foil (think mylar ballon) layer.
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  #11  
Old June 18th, 2013, 10:46 AM
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From top to bottom:

Open cell foil faced self adhesive foam under the headliner. Insulate the void to control temperature exchange and deaden the roof noise.
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Headliner - much needed
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Door seals - in good condition all around

Windows - felt channels in good condition all around

Doors - dampening matting - foil faced rubberized self adhesive wrap/mat along the door interiors - door cards in good condition
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Lower threshold seals - in good condition

Bulkhead interior - dampening matting - foil faced rubberized self adhesive wrap/mat below dash line - rubber footwell covers

Seat box - dampening matting - foil faced rubberized self adhesive wrap/mat on seat box interiors (or exteriors) cover with rubberized matting

Seat box lids - dampening matting - foil faced rubberized self adhesive wrap/mat along the lid interiors

Floor boards - heavy rubber matting - can also do dual layer front floors with rubber sheet between

Engine bay - dampening matting - foil faced rubberized self adhesive wrap/mat bonnet interior large span and install an inside sound deadening liner on the bonnet. Rubberized engine mat (200 & 300Tdi)

When doing the above - chase down and fill any voids or body panel gaps that may have come open (see the water ingress manual) You can also substitute carpet for the rubber matting if appropriate to the vehicle use
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  #12  
Old June 18th, 2013, 11:32 AM
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Quote:
Originally Posted by crown14 View Post
Dynamat is not foam, its rubber with an thick aluminum foil layer. Dynaliner is foam with a thinner foil (think mylar ballon) layer.
Sorry, got the names reversed.
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  #13  
Old June 18th, 2013, 02:10 PM
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This is awesome data, thank you everyone.

Jeff
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  #14  
Old June 18th, 2013, 07:27 PM
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Here is a great site on sound deadening. What I really like about it is how it breaks down the sound into its actual components and how you want to combat them through mitigating vibration, blocking airborne sound, decoupling sound from transmitting and absorbing. Really makes sense. I didn't really look at the products as much as the concept--but I found it useful. http://www.sounddeadenershowdown.com/
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  #15  
Old June 18th, 2013, 10:14 PM
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Yes, read that first... Most people slather everything in a sound dampener like dynamat and covering bends and edges is doing absolutely nothing. Dampeners in the center areas of flat panels and barriers on everything. The barriers are where you need to put effort into...
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  #16  
Old June 18th, 2013, 10:23 PM
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They weren't to bad in mine (running BFG A/Ts). By far the Diesel engine was the noisiest component.

Quote:
Originally Posted by leastonce View Post

tire noise and air noise are major contributors to cabin noise.
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  #17  
Old June 19th, 2013, 12:24 AM
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Great read!

Quote:
Originally Posted by Davis View Post
Here is a great site on sound deadening. What I really like about it is how it breaks down the sound into its actual components and how you want to combat them through mitigating vibration, blocking airborne sound, decoupling sound from transmitting and absorbing. Really makes sense. I didn't really look at the products as much as the concept--but I found it useful. http://www.sounddeadenershowdown.com/
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  #18  
Old January 14th, 2015, 08:22 PM
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Reviving old noise thread. Can anyone comment if the plastic suspension covers (MRC9520) that go over the shock towers help in reducing road noise from coming into the engine bay and making it in through the bulkhead? any noteworthy reasons to fit those?
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