Sound Proofing

[tontol]

I've worked out the difficult bit of sound proofing - i just leave her at home !!

But on the Sealine there is no sound proffing in the engine bay. As a consequence there is a fair bit of noise at anything over 2000 revs

is there any good reason why i shouldn't apply sensible sound deadening to the bay ?

 

[hlb]

My boats got it, it's egg box shaped foam rubber, having said that, it's being replaced as we speak, cos of a minor sinking do.

 

[BartW]

sound proofing consists of 2 elements; isolation and absorbtion,
rubber mats as used on the inside of car doors, are good for isolation,
and polyurethane foam is good for absorbtion.
if you use high density foam you can combine both elements in one layer, use minimum 4cm to 6cm, 80kg/m3 density, and more is better. be carefull with foams that are sold in the DIY stores usually have very low density, so almost no effect!
if you want to look your engine bay very classy, use a perforated stainless steel sheet to cover the foam.

 

[Jaysay]

I can recommend it. Try these people http://www.halyard.eu.com/NoiseVibrationReduction.aspx - I was very impressed with them, it cost me about £300 or so for a bay about 2m x 1.5m x 1m, covering all surfaces.

That said, I had excellent results before that using ordinary carpet underlay (the corrugated rubber type) just on the engine compartment access panels (deckboards in my case), and that cost me only £5 for offcuts!