Engine bay sound deadening

[blakeys80]

I know what you mean, I think it's just that there's better products around now to apply to the exterior for purely protection, and the sound deadening properties of the Gravitex etc are also pretty good when combined with deadening the interior. If you want to replace the foam though, when I used to work in Air conditioning, we used a polyethylene foam for the same function, as long as it's closed cell it should be fine. I suppose you could even get the self adhesive stuff and stick thin rubber/plastic sheet to it to give it more mechanical strength.
Something like this would prob do the trick

https://www.efoam.co.uk/closed-cell-pol ... e-foam.php" onclick="window.open(this.href);return false;

[CovKid]

Most tend to lean towards sound deadening inside partly because of limited access (ideally with gearbox out) and the hassle of cleaning and treating the surface you intend to bond to. I'm not convinced its worth the effort to be honest.

[Whitevanman]

Most tend to lean towards sound deadening inside partly because of limited access (ideally with gearbox out) and the hassle of cleaning and treating the surface you intend to bond to. I'm not convinced its worth the effort to be honest.

I agree but as the box is out and it's all cleaned back an painted I'm looking into it

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[Jonnyb416]

I’ve got that many shoes wellies etc under my seat from my family of 5. You don’t hear any of the engine!


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[boatbuilder]

Most tend to lean towards sound deadening inside partly because of limited access (ideally with gearbox out) and the hassle of cleaning and treating the surface you intend to bond to. I'm not convinced its worth the effort to be honest.

I agree but as the box is out and it's all cleaned back an painted I'm looking into it

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I fitted maricoustic foam to mine, held in place with the original wires.

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[Whitevanman]

Repainted original brackets and fitted new adehisve backed acoustic foam

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[dugcati]

I've gone thru the same process, the back end of my van has been gutted and so far on the outside area above the gearbox I've used this stuff cut to fit in the corrugations on the metalwork...
https://www.dodomat.com/collections/sou ... ening-roll

...then this stuff over the top in a single sheet
https://www.dodomat.com/collections/the ... -12mm-roll

and on the inside I'm again using using the dead mat in the corrugations and this over the top behind the R&R bed area
https://www.dodomat.com/collections/the ... -liner-5mm

not as yet got as far as the engine hatch area - may leave that as is as its a Devon conversion so there is a tray and part of the bed that sits there which acts as sound insulation on its own.


For anyone needing them Brickwerks sell the metal retainers for the original matting (need to buy 2 for your van), I have bought these and will modify them to fit so should the sitcky on the above start to (inevitably!) fail then these will come in to action.....
https://brickwerks.co.uk/product/sound- ... -bulkhead/

[Simon Baxter]

Just had these made, plenty of stock, to go with the big wire frame we've also had made.
https://brickwerks.co.uk/product/sound- ... ead-upper/
This is the small one above the bell housing.
Original sound deadening is 19mm, you can get both the big piece and the strip out of a Dynamat under bonnet sheet with some spare for the sides of the engine bay and the rear valance.
I'd suspect if you use something thinner then it won't be tight enough behind the frames.
I didn't want to use the adhesive against the body so I used some silver bubblewrap stuff stuck to the adhesive side.