Noise Reduction Thoughts - Defender Source
Defender Source  

Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions


Reply
 
Thread Tools
  #1  
Old March 15th, 2012, 10:16 AM
aosias's Avatar
aosias
Status: Offline
Alexandra
1995 D90
Member
 
Join Date: Feb 2006
Location: Boulder, CO
Posts: 1,348
Registry
Noise Reduction Thoughts

If you had to choose one area to start which do you think would be more effective? Under the hood or interior of the bulkhead?
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old March 15th, 2012, 10:24 AM
rijosho's Avatar
rijosho
Status: Offline
Joshua
1995 Black ST - Rhinolined edition
Research Assistant/Eagle Eyes
 
Join Date: Apr 2009
Location: NYC
Posts: 16,557
Registry
The occupant in the passenger seat
__________________
Quote:
I am talking purely from an aesthetics standpoint.
Reply With Quote
  #3  
Old March 15th, 2012, 10:35 AM
aosias's Avatar
aosias
Status: Offline
Alexandra
1995 D90
Member
 
Join Date: Feb 2006
Location: Boulder, CO
Posts: 1,348
Registry
Quote:
Originally Posted by rijosho View Post
The occupant in the passenger seat
HA! The occupants that make the most noise are in the back. Sadly the passenger seat is normally vacant as the other half prefers not to be associated with the Defenders, and no longer feigns interest in the least.
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old March 15th, 2012, 11:10 AM
leastonce's Avatar
leastonce
Status: Offline
Jason England
D-90 White 95 SW #65
Site Team
 
Join Date: Jul 2009
Location: NYC
Posts: 6,078
Registry
ear plugs - cheap and effective
__________________
Quote:
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.
Car Camping Collective founding member and Chief Executive Officer
Cat Camping Collective founding member and Chief Executive Officer
Reply With Quote
  #5  
Old March 15th, 2012, 11:28 AM
grnrvrs's Avatar
grnrvrs
Status: Offline
Paul
88
Member
 
Join Date: May 2004
Location: west
Posts: 1,393
IMO (and what I'm doing)
Seatbox
Floors
Bulkhead
Doors
Roof

There are three dimensions of noise reduction. 1) stopping vibration 2) stopping transmission and 3) sound absorption There are products for each. Are you looking to buy a solution or piece it together yourself? The Wright Offroad/Exmoor Trim seatbox & front floor/tunnel mats seem to be a good at 1 & 2. Add some heavy rubber mats for the second row and way back and your ears will be much better off.
__________________
1970 SIIA 88, Sold
Reply With Quote
  #6  
Old March 15th, 2012, 05:10 PM
aosias's Avatar
aosias
Status: Offline
Alexandra
1995 D90
Member
 
Join Date: Feb 2006
Location: Boulder, CO
Posts: 1,348
Registry
Roof has dynamat under the headliner. I'm going to do the doors next since I have a roll of it here.

Considering the full kit from http://www.noisekillergb.com/ with LR mats over it for the interior and then the hood too. I like that the full kit does almost the entire truck with the acoustic matting.

I've looked at the Wright/Exmoor stuff before I just don't love it. I have nothing right now but some rubber mats so probably anything will be an improvement.
Reply With Quote
  #7  
Old March 15th, 2012, 06:45 PM
MattGuyver_007's Avatar
MattGuyver_007
Status: Offline
Matt VA
1995 D90 SW
Member
 
Join Date: Oct 2006
Location: Castle Rock, CO USA
Posts: 159
This is my next project and, knowing myself, I'll end up lining everything. With that said, I plan to start with the floors and seating area as most of the noise originates from below (tires / road, transmission, engine, etc). From what i've researched it seems Dynamat is the gold standard for noise reduction mat. ECR has quite a few posts / projects / pics where they tame the noise level and all they use is Dynamat so there's something to be said there.
Reply With Quote
  #8  
Old March 15th, 2012, 07:00 PM
aosias's Avatar
aosias
Status: Offline
Alexandra
1995 D90
Member
 
Join Date: Feb 2006
Location: Boulder, CO
Posts: 1,348
Registry
I know Dynamat is great. But it is so nasty when it gets dog hair and gunk in it. I've had it inside other trucks. I like it when you can cover it with something substantial- like a headliner or a door panel. I have it under some panels that I won't have to see again- seat box lids, transmission panel.

I'm just being a pansy about spending the $ and installing something.
Reply With Quote
  #9  
Old March 15th, 2012, 07:14 PM
Raz's Avatar
Raz
Status: Offline
Leif
1994 90 ST #1589
Member
 
Join Date: Nov 2011
Location: Western WA
Posts: 230
Registry
Quote:
Originally Posted by aosias View Post
Roof has dynamat under the headliner. I'm going to do the doors next since I have a roll of it here.

Considering the full kit from http://www.noisekillergb.com/ with LR mats over it for the interior and then the hood too. I like that the full kit does almost the entire truck with the acoustic matting.

I've looked at the Wright/Exmoor stuff before I just don't love it. I have nothing right now but some rubber mats so probably anything will be an improvement.
Noise Killer takes it to a whole new level. It looks like the engine gets a blanket strapped to the top.
I'm going to put some Dynamat or similar on the underside of the transmission tunnel next time it's off. Other than that I just have two rubber mats.

If you go the Noise Killer route you should do a review of the results. It seems affordable enough.
Reply With Quote
  #10  
Old March 15th, 2012, 07:51 PM
Overlander's Avatar
Overlander
Status: Offline
mark kellgren
in between D's in an 04 D2
Member
 
Join Date: Mar 2006
Location: Charlotte, NC
Posts: 6,531
Registry
floors and tranny tunnel are what I found to be the biggest offenders for powertrain noise, which is different from tire/road noise. floors, good door seals and bulkhead for that.
Reply With Quote
  #11  
Old March 18th, 2012, 09:37 AM
jhhorse
Status: Offline
joe heins
1995 defender 90
Member
 
Join Date: Jul 2010
Location: castle rock, colorado
Posts: 112
I have about 3/4 " of layering of different materials on my floor, tunnel, seat box and bed. Some flashing under that to stop the drumming. Bottom line, I think the noise from all those areas is reduced significantly, so whatever you put down there will help, just make it thick and layer it. I have nothing under the hood, and should go there next because engine noise is an issue. But with the soft top, and soft top doors (windows) there is only so far you can go. Joe
Reply With Quote
  #12  
Old April 19th, 2012, 04:13 PM
aosias's Avatar
aosias
Status: Offline
Alexandra
1995 D90
Member
 
Join Date: Feb 2006
Location: Boulder, CO
Posts: 1,348
Registry
I thought I'd update this to where I am currently.

So- I used the B-quiet (dynamat knock off) that I had in the following places:

1. Under the seats- just the access panels.
2. Across the 2nd row floor, then I put a thin rubber sheet over that (removable) and then some LR rubber floor mats)
3. The main part of the rear tub floor- not the sides or the tops of the wheel wells yet and another thin rubber sheet over that. Ordering a new rubber cargo space mat and then I will do the wheel well sides and top.
4. One second row door interior since I had the trim off. Planning to do the other 3 doors in the next few days.

I also installed 1 "heavy duty" rubber kick panel on the driver's side. Haven't gotten around to the passenger side due to the AC. On the front floors I have some older LR insulation mats with rubber mats over them.

AND for the BEST $ I've spent so far! The Dynamat hood liner kit. Ordered it from Amazon for about $60. Made a template and cut it up to stick under the hood around the support. That has been night and day for noise inside the truck and it was super quick. Dynamat recommends using a sheet of their extreme under the hood liner and I think that would be a great idea. I need to take my hood apart and spruce it up a bit and when I do that I'll do the Extreme- but I wanted to install this quickly with the hood on the truck.
Reply With Quote
  #13  
Old April 20th, 2012, 01:05 PM
Sandt's Avatar
Sandt
Status: Offline
Sandt Michener
1984 Ninety
Member
 
Join Date: Jun 2011
Location: Salisbury, NH, USA
Posts: 137
Registry
I've been wondering if self adhesive foam duct insulation would be effective in noise/vibration reduction. Seems like it would work and it's relatively cheap. Anyone use it?
Reply With Quote
  #14  
Old April 20th, 2012, 08:24 PM
Lee
Status: Offline
Lee O
95 NAS D-90 300Tdi
Member
 
Join Date: Jun 2007
Location: Wilton, NH
Posts: 43
These are all good suggestions and I've done pretty much all of this. The one thing I'd mention is make sure there are NO holes btw the bulkhead, floor, etc. This is the first thing to check - I used a clear caulk to plug everything - after I put all this down and was still getting noise transmission (the Tdi will do that...)

This guy has a thorough discussion and I've found his prices reasonable: http://sounddeadenershowdown.com/cgi-bin/index.cgi

-Lee
Reply With Quote
  #15  
Old April 21st, 2012, 01:08 PM
ajh
Status: Offline
Andrew J. Hutton
1993 Defender 110 200TDI
Member
 
Join Date: Oct 2007
Location: Ottawa, Ontario, Canada
Posts: 735
Exmoor now does some acoustic floor mats that are less than the full coverage kit; as well as one for the 2nd row floor in a 110.
__________________
--

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
- Parts & Accessories Imported Weekly

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
- Like us on Facebook for a discount on parts!

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
- Handmade Soap ideal for Mechanics!
Reply With Quote
Reply

Lower Navigation
Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions

Tags
ht

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
D90 #497 Noise Reduction Project...!!! Bill Larson Smaller Projects 10 September 17th, 2010 09:13 AM
Noise from engine--curse of my existence Davis Defender Technical Discussions 25 June 24th, 2005 04:27 PM
Curious knocking noise mikeslandrover Defender Technical Discussions 6 March 29th, 2005 06:09 PM
LT230 noise? Chaucer Misc. Chit-Chat 5 March 19th, 2005 02:59 PM
whistling noise from engine jstrong98 Defender Technical Discussions 2 December 14th, 2004 11:37 PM


All times are GMT -5. The time now is 02:16 PM.


Copyright