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EWS

Member Since: 29 Nov 2011
Location: Bristol
Posts: 156

Another sound proofing query

Hi all.

Looking for options re sound proofing the bonnet. There is a number of these items available on the Bay and other suppliers . Bonnet sound proofing/insulation pad - AWR4i47.

http://www.brit-car.co.uk/product.php/8243...ad_def__la

Many advertisers on the BAY state it will only fit bonnets which came with factory installed fittings, ????

The Brit car add shows spacers, washers and a bracket, looking in Microcat it states 9 spacers and washers, two brackets, assuming these fix to the bonnet bracing panels/double skin, is it viable to fix with rivnuts , possible making the spacers out of thick wall tubing, large penny washers, brackets out of ally strip.

Is it a flexible metallic/foam/fabric or a rigid composite, and of does it work.

Any info gratefully received.

EWS.

14th Oct 2016 9:17pm

lightning

Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 2698

What Defender do you have? That bonnet soundproofing sheet won't fit the TD5 as the bonnet does not have the lipped edges and there's basically nothing to attach it to.
If you have a TD5 then there's a company called NK (Noise Killer) who will sell you a kit of stick on soundproofing to fit the three single skin areas.
I fitted a set and the sticky backed shaped pieces are very good, the glue is very strong and once on will not come off!
It did make a small difference to noise levels, more noticeable when driving with the vent flaps open.

15th Oct 2016 8:25am

EWS

Member Since: 29 Nov 2011
Location: Bristol
Posts: 156

Similar add, upto 06 so that's a TD5.

http://www.ebay.co.uk/itm/LAND-ROVER-DEFEN...SwZd1VdZod

Defender Bonnet Insulation Panel

Price: Now Only £84.95!

Land Rover Defender New Bonnet Insulation Pad
Please check to see if your vehicle has the mountings
to fix this panel to the bonnet, some models didn't
have these panels fitted in the factory from new.
If your model doesn't have them then this will not fit...

Suitable for:
Land Rover Defender 90, 110 & 130
All Models (1987-2006) Not for Puma

Colour: Black
AWR4147 / MUC9850
Condition: New OEM Part

Warranty: 2 Years

15th Oct 2016 9:48am

lightning

Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 2698

Believe me it is no use for the TD5 bonnet.
I have a 2003 TD5 90 and a 2005 TD5 110.
I bought one, and tried it! There's no way to make it work properly. The TD5 bonnet edge has no lip at the sides and that soundproofing sheet is just no good.
The supplier sold it to me as TD5 compatible and l had to send it back.

16th Oct 2016 1:59pm

diesel_jim

Member Since: 13 Oct 2008
Location: hiding
Posts: 6088

And.... if you think, "Ah, I'll just get an earlier 200/300Tdi type bonnet and fit that" then you'll find that the soundproofing will touch (quite firmly) onto the plastic rocker cover thing (which itself is also insulated for soundproofing) and you'll get a helluva racket vibrating through the bulkhead.

I had a military wolf (300Tdi) bonnet on my Td5 110, and even without the soundproofing it still vibrated on the top of the engine. Got a Td5 one from Ibexman and it made the vehicle instantly quieter.

16th Oct 2016 2:36pm

Brewstop

Member Since: 28 Oct 2012
Location: South Oxfordshire
Posts: 313

2002 Defender 110 Td5 CSW Zambezi Silver

I wouldn't spend that much, £50 to do the bonnet with foil backed bitumen and self adhesive 20mm closed cell heat proof foam.

http://www.ebay.co.uk/itm/Self-Adhesive-Cl...SwyKxXhPTr

Click image to enlarge
I know its the roof.....

Click image to enlarge Sandy

16th Oct 2016 4:50pm

EWS

Member Since: 29 Nov 2011
Location: Bristol
Posts: 156

Thanks to all that replied.

You never know till you ask, the collected knowledge on here is a wonderful resource.

Again many thanks to all.

Edward (EWS)

16th Oct 2016 5:11pm

lightning

Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 2698

Buy the NK TD5 underbonnet kit, about £50 and does make a difference.
Or make your own pieces and stick them on, as above.

16th Oct 2016 7:41pm

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