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Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel
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Diesel This is a new forum dedicated to diesel engines and their applicable accessories.


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  #1  
Old 02-27-2013
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Paint

Motor will be reoved next week as part of repower project' now I have more questions.

Need suggestions for the following:

Paint for lazarette and engine space, can I use a exterior paint from Lowe's?

Soundproofing for engine space

McMaster Carr stocks a one inch thick, water resistant adhesive backed sheet that will absorb 65% of the sound. It also has a urethane coating for oil resistance.
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Old 02-28-2013
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Re: Paint

Wow, the 60% reduction would be nice. There were some threads, I think it was here, on soundproofing not that long ago. The discussion centered on the fact that density was the key to soundproofing.

What is the temperature rating for the stuff from McMaster Carr?
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Old 02-28-2013
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Re: Paint

Interlux make a great paint called "bilgecote gray". This is a cheap solution and the paint is easy to apply and oil and grease resistant.
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Old 02-28-2013
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Re: Paint

I don't have access to the pictures at the moment that I took of the engine room preparations I did prior to the install of the engine, but I used BilgeKoat, gray for everything but the engine bed which I painted in white (to better see signs of any problems with the engine, leaks, chafing, etc.)

I used a product by Sundown, purchased from Defender. Its expensive and not much fun to install. I don't know if it will do anything but it made me feel good LOL At least its done, doing it after the install would have been a major PITA

If I recall correctly, I purchased
- 3 ea of this Soundown Sound-Stop Foam Panel
- 2 ea of this Soundown Noise-Reduction Mounting Kit
- 1 ea of this Soundown Noise Reduction Installation Kit
and few roles of tape from the local hardware store similar to what they supply, which isn't even close to what you will need to seal the edges.

A few photo of the installed insulation, sound & heat (Note: these do not represent the completed job, just a few as I was installing):

You can see some of the bilgekote in the pics...




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Old 02-28-2013
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Re: Paint

Hey SHawn,
When the engine goes back in, would you report back about your perceived sound level differences? I'd like to do something like this in my boat.
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Old 02-28-2013
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Re: Paint

Quote:
Originally Posted by jimgo View Post
Wow, the 60% reduction would be nice. There were some threads, I think it was here, on soundproofing not that long ago. The discussion centered on the fact that density was the key to soundproofing.

What is the temperature rating for the stuff from McMaster Carr?
-40° to 185° F

I ordered it last night, lots cheaper than the sounddown sound stop foam panel and it has adhesive on one side. I have foam installed from the OEM but it is degraded. If I don't like it I'm out $50.

Not sure what the percentage is on the sounddown, Defender website shows Sound-stop has a 1 lb. Per sq. Ft. Mass barrier, which yields at least 19 db stc rating for noise transmission loss


Stan
What is the db on the Beta 25?
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Old 02-28-2013
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Re: Paint

Quote:
Originally Posted by T37Chef View Post
A few photo of the installed insulation, sound & heat (Note: these do not represent the completed job, just a few as I was installing):

You can see some of the bilgekote in the pics...





Oohh shiny, me like it!!!!
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Old 02-28-2013
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Re: Paint

fwiw...I primarily installed the Sundown as a heat barrier. The new engine should not require much sound insulation, doesn't do much good unless the engine compartment is completely sealed off...which is not recommended for most engines rooms I'm told. You need some air circulation, to add its virtually impossible...even the smallest opening will allow a significant amount of "noise" to escape ...I'm no expert but that's what my research found
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Re: Paint

If the sound is directed at the transom, and away from the cabin, I suspect that will do a lot to reduce the apparent sound levels in the cabin. I don't need the boat to be soundproof, just quiet enough that the folks in the cabin can easily talk to each other, and preferably with the people in the cockpit, too.
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Old 02-28-2013
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Re: Paint

Quote:
Originally Posted by katsailor View Post
-40° to 185° F
You might want to check the normal operating temp of your engine. The thermostat for our Perkins doesn't open until the engine hits 180* -- we normally get up to about 185* - 190* at a leisurely 2200 rpm (which is well below WOT).
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