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Old 04-04-2009, 04:46 PM   #1
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MH Engine Noise Reduction

Does anyone have any ideas of what you can use as a noise barrier on the cawl of the motorhome, to make it quieter?

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Old 04-04-2009, 06:20 PM   #2
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Take a look at Dynamat from auto stereo stores or there is sound barrier material at Lowe's and Home Depot.

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Old 04-04-2009, 06:25 PM   #3
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They make insulation blankets that cut down on noise and heat from engine.
ENGINE DOGHOUSE COVER This material would be cut to conform to doghouse and stick on or use sticky tape. This shows front engine diesel but same would apply to your 454.
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Old 04-04-2009, 07:12 PM   #4
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Back in 1999 when I bought my gas MH I learned the following from another forum. There are probably better products available now but this was easy to do, helped significantly with heat and noise and was inexpensive. It was still intact when I sold the coach in 2008.

I bought a roll of foil covered bubble wrap from hardware store and M-77 spray adhesive. Use the adhesive as directed to attach the foil wrap to the underside of the doghouse making sure it is secured everywhere, especially the corners and anywhere it overlapped.

I checked it now and then after I first put it on but then almost forgot about it. Held up well and made a big difference for minimal cost.
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Old 04-06-2009, 12:37 PM   #5
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I used insulation material for a boat engine compartment. I't a layer of metallic reflective material, foillowed by a layer of high density foam, followed by a layer of rubberized lead, followed by another layer of foam and then the outer sheet of metallic foil. Used 3 M spary adhesive to put it on. Been about 10 years now. Purchased the material from Defender Industries.
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Old 04-10-2009, 03:58 PM   #6
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The word your are looking for is Cowl.

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