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Old 10-02-2012, 08:43 PM   #1
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Insulating engine compartment in DP

I am considering adding some insulation to my engine compartment for sound and heat. This summer the engine heat would add as much as 12 - 15 degrees to our bedroom at the end of a long drive.

Have any of you DP drivers ever insulated the engine compartment? What material did you use? How effective was it?
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Old 10-02-2012, 08:57 PM   #2
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one thing you might explore is turbo/exhaust heat insulation wrapping. i have not done it but in the past two days I have been reading and searching... heat shield/tape can sustain 1200 degrees f. it is said that the wrapping not only reduces engine bay temperature but also boosts horsepower by 70%.
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Old 10-02-2012, 09:05 PM   #3
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I used this on my gasser engine hump. It works great sticks well to fiberglass. It is sold as sound deadening. But has good insulating properties too. It greatly reduced the heat (and noise) coming through after a long days drive. There are different thicknesses available. This is a copy of the real stuff called Dynamat, that costs twice as much.

Bulk Packs, 2 Door Kit items in Noise Killers Sound Control store on eBay!
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Old 10-02-2012, 09:11 PM   #4
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It is darn hard to reduce that bedroom heat and I have a new American Rev, had a 11 Phaeton and both were well insulated in the engine area and it was still warm.
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Old 10-02-2012, 09:29 PM   #5
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I have a fried that owned a older Wanderlodge by Bluebird. At the end of the days travels they complained abut a electric motor noise when trying to take a nap. After closer examination he found a fan that would blow the heat out of the engine bay after shutting the engine down. I have always wanted to do this and always have forgotten about it till I need it. The fan could even be put on a timer or a temp switch, 12v or 110. This could be fairly easy and feasible to install on any brand of MH.
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Old 10-02-2012, 09:55 PM   #6
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What sort of fan would you use and were would you mount it
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Old 10-02-2012, 09:58 PM   #7
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Quote:
it is said that the wrapping not only reduces engine bay temperature but also boosts horsepower by 70%.
70% Wow!!!
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Old 10-02-2012, 10:03 PM   #8
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I think each application would be different. Mine would most likely be a squirrel cage type that would be small diameter but wide as to be mounted in the top of compartment so to blow heat out the rear grill. Also a 12v radiator fan from a salvage yard would work.
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Old 10-02-2012, 10:29 PM   #9
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marine bilge blower, already 12v...some 4 inch hose to vent it outside...
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Old 10-02-2012, 10:31 PM   #10
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Originally Posted by rg500
marine bilge blower, already 12v...some 4 inch hose to vent it outside...
Have you a link ? Really like this idea
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Old 10-02-2012, 10:35 PM   #11
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Quote:
Originally Posted by sdlcrazier View Post
one thing you might explore is turbo/exhaust heat insulation wrapping. i have not done it but in the past two days I have been reading and searching... heat shield/tape can sustain 1200 degrees f. it is said that the wrapping not only reduces engine bay temperature but also boosts horsepower by 70%.
I have wrapped a few exhausts and 70% is not going to happen! Every engine in the world would have this. there is sometimes a gain but it is minimal. Also what ever insulates also retains.
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Old 10-02-2012, 10:58 PM   #12
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336...exactly...more long term damage is possible from holding heat(ie: cracked exhaust manifolds for 1)

70% will never be obtained...any increase would never be felt by the seat of the pants.

Fan would need to move a lot of air...it can't be a small dinky type fan. These big ole diesel blocks will retain heat for hours, once they get warmed up.

I crack both bedroom windows...this helps quite a bit....if the AC is running, I close the bedroom door due to the windows being open.

Once we arrive at our destination, the wife uncovers the bed to allow any trapped warmth to expel
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Old 10-02-2012, 11:00 PM   #13
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If you use one of the radiator fans built for a car, it would be 12 volt and may already have a temp sensor built in. Our friemds had a Monaco Camelot where the engine compartment was built like a perfect box with a flat roof. There was only about 12" between the engine and the roof. It was all wrapped, but the only opening was at the rear of the coach. Monaco later cut a vent at the rear of the coach, above the engine doors and bolted two automotive radiator fans up behind the vent. They did a good job pulling out hot air.

Second option, I was working on my exhaust brake the other day and discovered a loud rattle. On my Cummins, there is an 1/8" metal plate, approximately 12" x 12". It has two metal straps (bent into an "L") that bolts to the cylinder head and holds the plate about 3" above the turbo. I never thought about it, but it does a good job of keeping the heat off of the floor of the bedroom. The rattle......the plate had two stress cracks in it. I welded them up and made it like new.
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Old 10-03-2012, 12:16 AM   #14
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Originally Posted by Tony Lee View Post
70% Wow!!!
i double checked the webpage, i had incorrect info. i couldn't edit my other message, here it is:
"the wrapping not only reduces engine bay temperature by 70% but also boosts horsepower". lol
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