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Engine cover sound dampening?
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Dunkers6
 


Member Since: 25 May 2015
Location: Taunton, Somerset
Posts: 29

United Kingdom 2007 Discovery 3 TDV6 GS Manual Buckingham BlueDiscovery 3
Engine cover sound dampening?

Hi all,

I removed the engine cover at the weekend following a read up regarding the MAP sensor. In doing so, I discovered that the 'sponge' that I assume was once attached to the cover is in tatters. I'm guessing that this serves to dampen the sound from the engine although I'm not entirely certain.

Does anyone know if you can simply buy and replace or am I into silly money for a new engine cover if I decide it really needs replacing?

Cheers
  
Post #16365515th Apr 2016 8:21 pm
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tayaste
 


Member Since: 15 May 2013
Location: Chester
Posts: 7633

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

A few have made their own
   
Post #16365655th Apr 2016 8:35 pm
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Dunkers6
 


Member Since: 25 May 2015
Location: Taunton, Somerset
Posts: 29

United Kingdom 2007 Discovery 3 TDV6 GS Manual Buckingham BlueDiscovery 3

That's good enough for me, thank you.
  
Post #16365665th Apr 2016 8:37 pm
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Nubber99
 


Member Since: 13 Apr 2014
Location: Poole
Posts: 289

United Kingdom 2005 Discovery 3 TDV6 SE Auto Tonga GreenDiscovery 3

I used this stuff: http://www.ebay.co.uk/itm/1m-GlassMAT-Engi...2309254874

You can see the result here :
Click image to enlarge


Been about 8 months now and it's still perfect.
  
Post #16365825th Apr 2016 8:51 pm
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DigitalJunior
 


Member Since: 22 Nov 2008
Location: Cumbria
Posts: 4395

United Kingdom 

Did it make a difference to the engine noise levels?
  
Post #16365845th Apr 2016 8:54 pm
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Nubber99
 


Member Since: 13 Apr 2014
Location: Poole
Posts: 289

United Kingdom 2005 Discovery 3 TDV6 SE Auto Tonga GreenDiscovery 3

Yes. Most of mine was missing, so it made a discernable difference.
  
Post #16365855th Apr 2016 8:56 pm
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Dunkers6
 


Member Since: 25 May 2015
Location: Taunton, Somerset
Posts: 29

United Kingdom 2007 Discovery 3 TDV6 GS Manual Buckingham BlueDiscovery 3

Thank you for the link. That got that sorted.
  
Post #16365885th Apr 2016 9:00 pm
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Dunkers6
 


Member Since: 25 May 2015
Location: Taunton, Somerset
Posts: 29

United Kingdom 2007 Discovery 3 TDV6 GS Manual Buckingham BlueDiscovery 3

Did mine this evening, thank you for the tip.
  
Post #164399221st Apr 2016 8:14 pm
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fishinmad
 


Member Since: 30 Jan 2012
Location: St Ives
Posts: 877

United Kingdom 2006 Discovery 3 TDV6 S Auto Bonatti GreyDiscovery 3

Mine disintegrated, I replaced it but can't say I could tell any difference in sound, wish I hadn't bothered as waste of money IMHO.
 Club Narpy Torch

“No return to boom and bust” Gordon Brown when chancellor
He has been proved right, now there is only bust! 
 
Post #164402921st Apr 2016 9:06 pm
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Wez
 


Member Since: 27 Mar 2016
Location: Holmfirth, west yorkshore
Posts: 34

United Kingdom 2005 Discovery 3 TDV6 S Auto Siberian SilverDiscovery 3


Did mine today. Foil backed sound proofing. Took decibel reading before and after... app on tablet ! ! Even stook spare to underside of bonet, then put felt back on. On readings only 2 db less. But it does sound quieter when revs are up. Mind games. On the plus side, did find melted bare wires on washer jet under bonet felt. Now removed and potential fire avoided , was it worth it ??
 Land rovers are to prevent you having idle hands. 

Last edited by Wez on 16th Oct 2016 10:11 pm. Edited 1 time in total 
Post #172076016th Oct 2016 9:46 pm
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deanslandy
 


Member Since: 17 Jan 2015
Location: nuneaton
Posts: 646

England 2007 Discovery 3 TDV6 HSE Auto Tonga GreenDiscovery 3

2db is a massive improvement . Thumbs Up
 Belts, oil pump casing and water pump by Flack
Transmission flush by Geoff 
 
Post #172076416th Oct 2016 9:57 pm
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lynalldiscovery
 


Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274

United Kingdom 2006 Discovery 3 TDV6 Metropolis LE Auto Bonatti GreyDiscovery 3

Wez wrote:

Did mine today. Foil backed sound proofing. Took decibel reading before and after... app on tablet ! ! Even stook spare to underside of bonet, then put felt back on. On readings only 2 db less. But it does sound quieter when revs are up. Mind games. On the plus side, did find melted bare wires on washer jet under bonet felt. Now removed and potential fire avoided , was it worth it ??


Very neat Thumbs Up
As said 2db difference is quite good, db works in weird ways I think 1db increase is something like double the sound? well worth a google as quite interesting.
  
Post #172079117th Oct 2016 5:50 am
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Irwin
 


Member Since: 04 Aug 2015
Location: Internet
Posts: 270


I think 10db is double the volume so 2db is a good result. Will the foil cause any problems in hot weather with heat dispersal from the engine?
  
Post #172079517th Oct 2016 6:00 am
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JksD4
 


Member Since: 31 Mar 2015
Location: Highlands
Posts: 100

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Stornoway GreyDiscovery 4

Sound levels is derived from a logarithmic equation using the ratio of power levels - to cut a long story short, a reduction of 3db is half the sound power level, so 2db is a good drop
 MY2010 D4 3.0 TDV6 HSE Stornaway grey  
Post #172079817th Oct 2016 6:14 am
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Barn1e
D3 Decade 


Member Since: 28 Aug 2006
Location: Mid-sussex
Posts: 2021

United Kingdom 2005 Discovery 3 TDV6 S Auto Tonga GreenDiscovery 3

I have had the same silver backed felt on mine for two years. No issues and at time car has worked hard towing caravan.
 2005, TDV6 S, Auto, 190k miles, owned from new, V8 Brake Upgrade, Nancom Evo, RLD protector, BAS EGR blanking & Remap, separate ATF cooler, changing all the fluids ahead of time.  
Post #172080017th Oct 2016 6:14 am
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