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Flashman



Member Since: 05 Jun 2011
Location: Windsor & Brentwood
Posts: 1227

England 2011 Range Rover Autobiography TDV8 Santorini Black
Improving Engine Bay Sound Insulation

I was wondering if anyone has tried improving the sound insulation on their diesel engine bay to help minimise the traditional diesel rattle. I have seen 'noise killer' sound padding used on underbonnets and am not sure if they would be better or worse than the Land Rover current design.

I have a late 2004/05 model, and maybe the newer models have better insulation parts that can be retrofitted.

Any thoughts are welcome. Tom

Current Drive
2011 4.4 TDV8 Autobiography - Santorini Black - Ivory Leather

Previous Drives
2004 Model Vogue Td6 (Touchscreen) - Java Black - Parchment Leather
1994 RR Classic 3.9 V8 Soft dash - Niagara Grey - Grey Leather
1972 Series III SWB Safari - Green (Hand Painted) - Black Plastic

Post #106509 10th Feb 2012 9:45am
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Cam-Tech-Craig



Member Since: 03 Aug 2011
Location: Gloucestershire
Posts: 16146

England 2015 Range Rover SVAutobiography SDV8 Loire Blue

06 onwards models have a huge amount of sound deadening inside interia panels... Go to a breakers yard?

I installed it all in my 04 TD6 and it made quite a difrence... Then I bought an SC and that worked better... Laughing




Craig Thumbs Up

Post #106514 10th Feb 2012 9:52am
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Flashman



Member Since: 05 Jun 2011
Location: Windsor & Brentwood
Posts: 1227

England 2011 Range Rover Autobiography TDV8 Santorini Black

Nice one Craig, I will head down to one to see what I can find.

If anyone has a pic of their 06 engine bay of these insulation panels so I can see which ones to nab that would be greatly appreciated. Tom

Current Drive
2011 4.4 TDV8 Autobiography - Santorini Black - Ivory Leather

Previous Drives
2004 Model Vogue Td6 (Touchscreen) - Java Black - Parchment Leather
1994 RR Classic 3.9 V8 Soft dash - Niagara Grey - Grey Leather
1972 Series III SWB Safari - Green (Hand Painted) - Black Plastic

Post #106523 10th Feb 2012 10:05am
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RRUK
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Member Since: 08 Jun 2007
Location: UK
Posts: 6342

United Kingdom 2019 Range Rover Vogue SE SDV8 Santorini Black

Surely there is the factory insulation? You'll be hard pressed to squeeze any more in? Discovery 4 HSE
1998 110 TUM HS FFR Hard Top XD WOLF
1982 Series 3 Hard Top

*Gone:L462 D5 HSE LUX, L663 Defender 110 HSE, Discovery 3 HSE, 2014MY Range Rover Sport 5.0 Supercharged AB Dynamic; L405 Exec Vogue SE 4.4, 5.0 Supercharged Autobiography, Defender TDCi XS CSW, Defender TD5 HT, Vogue SE TDV8, Vogue TD6, RRSport SC 4.2V8, Classic 3.9 Vogue Auto, Land Rover Series 3 SWB

Post #106530 10th Feb 2012 10:26am
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nicedayforit



Member Since: 11 Jun 2011
Location: Beside the Solway
Posts: 3951

England 2004 Range Rover Vogue Td6 Giverny Green

Plenty of room on top of the engine in a TD6, you could put in quite a thick layer of absorbent material full width which could be lifted out for maintenance.

Post #106532 10th Feb 2012 10:31am
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Flashman



Member Since: 05 Jun 2011
Location: Windsor & Brentwood
Posts: 1227

England 2011 Range Rover Autobiography TDV8 Santorini Black

Yep the TD6 has a lot of space in there, I could almost put in a whole duvet!

I would prefer something similar or the same as OEM design. It looks like the newer ones have a rubber seal running around the edge of the whole bay which would be a start. Not sure if the newer bonnet insulation is thicker or more extensive on the new ones. Tom

Current Drive
2011 4.4 TDV8 Autobiography - Santorini Black - Ivory Leather

Previous Drives
2004 Model Vogue Td6 (Touchscreen) - Java Black - Parchment Leather
1994 RR Classic 3.9 V8 Soft dash - Niagara Grey - Grey Leather
1972 Series III SWB Safari - Green (Hand Painted) - Black Plastic

Post #106577 10th Feb 2012 1:16pm
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VaguelyVogue



Member Since: 05 Feb 2010
Location: Buckinghamshire
Posts: 380

United Kingdom 2006 Range Rover Vogue Td6 Buckingham Blue

It might be worth asking Duckworths Dan what the price is for the pukka 06 insulation/ rubber seals - I wondered if it was worth adding any more sound insulation, but the effort of removing the dashboard was too much to make it worthwhile!

Post #106618 10th Feb 2012 2:50pm
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Flashman



Member Since: 05 Jun 2011
Location: Windsor & Brentwood
Posts: 1227

England 2011 Range Rover Autobiography TDV8 Santorini Black

I'll see if Dan has any info. It is more the insulation that quietens the car to outside that interests me, the insulation to the cabin is amazing already. I don't like waking up all my neighbours every time I start the car, so any improvement on the insulation is a bonus. I know it will never be that quiet, but the new diesels seem almost as quiet as the petrol versions. Tom

Current Drive
2011 4.4 TDV8 Autobiography - Santorini Black - Ivory Leather

Previous Drives
2004 Model Vogue Td6 (Touchscreen) - Java Black - Parchment Leather
1994 RR Classic 3.9 V8 Soft dash - Niagara Grey - Grey Leather
1972 Series III SWB Safari - Green (Hand Painted) - Black Plastic

Post #106648 10th Feb 2012 4:42pm
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47p2



Member Since: 05 Oct 2010
Location: Gone Beyond, Subaru
Posts: 8048

Scotland 

These are great for sound deadening Thumbs Up Thumbs Up



Post #106678 10th Feb 2012 6:45pm
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Contraband



Member Since: 08 Nov 2010
Location: FIFE
Posts: 3697

Scotland 

^^^ Rolling with laughter Previously..
Vogue SE TD6
Defender 90 2.4
Defender 110 TD5
Vogue 3.5 EFI

Post #106695 10th Feb 2012 7:47pm
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The Brains Trust



Member Since: 23 Sep 2011
Location: Melbourne
Posts: 155

Australia 2003 Range Rover HSE Td6 Adriatic Blue

It seems to me that most of the noise is coming from that whopping great 9 blade fan, not the engine. When I next have a play under the bonnet, I'm going to whip the fan out and take it for a quick run around the block to measure the difference in noise level - I think it would be quite noticable.

Not sure what to do about it though - maybe some thermo fans, but I doubt I'll get that carried away with it. With the windows up, I can live with it.

Post #106752 11th Feb 2012 7:48am
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47p2



Member Since: 05 Oct 2010
Location: Gone Beyond, Subaru
Posts: 8048

Scotland 

The fan should only make a noise when the engine is hot, could be the viscous coupling is kaput Shocked

Post #106759 11th Feb 2012 8:51am
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Cam-Tech-Craig



Member Since: 03 Aug 2011
Location: Gloucestershire
Posts: 16146

England 2015 Range Rover SVAutobiography SDV8 Loire Blue

The sound deadening material I used from the 06 model was all inside the car, behind panels etc etc... Sorry for any confusion...




Craig Thumbs Up

Post #106762 11th Feb 2012 9:09am
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The Brains Trust



Member Since: 23 Sep 2011
Location: Melbourne
Posts: 155

Australia 2003 Range Rover HSE Td6 Adriatic Blue

47p2 wrote:
The fan should only make a noise when the engine is hot, could be the viscous coupling is kaput Shocked


No - it works fine, and does exactly the same thing as the brand new one on my Classic (That was stuffed until I replaced it.). First thing in the morning, roars for 30 seconds or so as the car takes off, then quietens down a bit. On a hot day (35 degrees +) in traffic, it roars as it starts to lock up - as it should - as it gets hotter, but apart from that, spins around minding its own buisness, but they still do turn, and they still do make a noise - just not as much as when it is hot...

Post #106769 11th Feb 2012 10:05am
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Flashman



Member Since: 05 Jun 2011
Location: Windsor & Brentwood
Posts: 1227

England 2011 Range Rover Autobiography TDV8 Santorini Black

My interest is in trying to deaden the normal diesel clatter noise. The bonnet has the stock factory fitted padding on the inside but I was wondering if the newer models have a thicker padding here and any other engine bay deadening rubber seals, covers etc that can be retrofitted.

There seems to be so much space free in the TD6 bay that absorbing padding etc must surely help keep the noise to the outside down, not too sure about under the engine, but over it might help. I will have a look for the rubber seals that seem to be on the SCs.

I have also seen noise killer blankets that are fitted over the engine they have a lead sheet covered in fire retardent foam and fabric. Anyone had any experience with them? Tom

Current Drive
2011 4.4 TDV8 Autobiography - Santorini Black - Ivory Leather

Previous Drives
2004 Model Vogue Td6 (Touchscreen) - Java Black - Parchment Leather
1994 RR Classic 3.9 V8 Soft dash - Niagara Grey - Grey Leather
1972 Series III SWB Safari - Green (Hand Painted) - Black Plastic

Post #106792 11th Feb 2012 1:30pm
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