Home » Public Forums » GMCnet » [GMCnet] Engine Compartment Insulation
| [GMCnet] Engine Compartment Insulation [message #65142] |
Sat, 21 November 2009 00:07  |
chip
Messages: 37
Registered: November 2009
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HI:
I've got the engine out of my 1977 Clasco. I thought now might be a
good time to try and insulate
the engine compartment. Maybe knock down some of the heat that
comes up thru the floors during
our Texas summers ....
Anyone had good success using a certain product / procedure /
ingenious idea that I will never be
able to think up ?
Thanks - Chip
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| Re: [GMCnet] Engine Compartment Insulation [message #65147 is a reply to message #65143] |
Sat, 21 November 2009 01:51  |
mlincoln
Messages: 107
Registered: August 2006
Location: Salt Lake City
Karma: 0
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Did you use it inside the engine compartment or in the corresponding locations, inside the cab, under the carpet?
Mike
On Nov 21, 2009, at 1:19 AM, Ken Henderson wrote:
> Chip,
>
> You can probably think it up, but what I've been happy with for over 11
> years now is a product called "duct board". It's heavy fiberglass mat
> covered on one side with a fireproof aluminized Kraft paper. It's available
> from HVAC suppliers; used to fabricate HVAC plenums and ducts so it's pretty
> rigid. I used Liquid Nails to fasten in to the floorboards and vertical
> step risers with sheet metal screws and fender washers on a 1' grid. I
> covered the exposed edges with aluminum foil duct tape. Other than some of
> that tape coming off, I've had no trouble whatsoever with it.
>
> I didn't have enough experience with the coach before installing the duct
> board to judge the sound and heat changes, but neither is a problem now:
> The cockpit's pretty quiet and there's no perceptible heating of the floor
> (which also has a thick hypoallergenic foam pad and heavy Berber carpet)
> under any climatic conditions. And we've been from Key West to Fairbanks
> with it.
>
> Cheap & effective. 4'x8'x1" panels were about $35 in '98.
>
> HTH,
>
> Ken H.
>
> On Sat, Nov 21, 2009 at 1:07 AM, <chip@mach3isp.com> wrote:
>
>> ... Anyone had good success using a certain product / procedure /
>> ingenious idea that I will never be
>>
>> able to think up ?
>>
>>
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Mike
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| Re: [GMCnet] Engine Compartment Insulation [message #65150 is a reply to message #65147] |
Sat, 21 November 2009 06:20 |
GMCWiperMan
Messages: 1248
Registered: December 2007
Karma: 1
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Only under the floor. The fiberglass fibers are brittle and would
eventually be crushed by traffic.
Ken H.
On Sat, Nov 21, 2009 at 2:51 AM, Michael Lincoln <mlincoln1@gmail.com>wrote:
> Did you use it inside the engine compartment or in the corresponding
> locations, inside the cab, under the carpet?
> Mike
>
> On Nov 21, 2009, at 1:19 AM, Ken Henderson wrote:
>
> > Chip,
> >
> > You can probably think it up, but what I've been happy with for over 11
> > years now is a product called "duct board". It's heavy fiberglass mat
>
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| Re: [GMCnet] Engine Compartment Insulation [message #65178 is a reply to message #65160] |
Sat, 21 November 2009 09:57 |
Jim White[1]
Messages: 144
Registered: September 2008
Karma: 0
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Gary-
A solution that I am working on is a foil faced ceramic stove pipe
insulation, which when I held a torch to the foil side, could feel no
heat from the ceramic side. I wanted fire proofing as opposed to just
noise and heat reduction. Attaching it under the floorboards and risers
was a challenge, until I saw what Tom Logue had done. He installed
aluminum foil faced insulation and put one-half inch hardware cloth over
it and sealed the edges with aluminum tape. The hardware cloth requires
fewer screws and fender washers and avoids the drooping issue. You have
to seal the edges to avoid trapping water under the insulation so I'm
applying sealant and covering the outside edges with strips I cut from a
sheet of aluminum as best I can.
One of my sons is a construction manager and says that galvanized steel
will rust immediately where it gets cut and anywhere else that it gets
scratched. Aluminum would probably be better.
JWID-
Jim "Doc" White
Wintergreen, VA
Gary Casey wrote:
> Excellent question and I've been thinking of using galvanized steel HVAC sheets from Home Depot screwed to the wood with something in between. But what? I have some woven fiberglass material for aircraft, but that is expensive and very thin. Compress the thinnest fiberglas mats I can find? 1/2-inch styrofoam? I'm not sure I like that idea.
> Gary
>
>
>
> ________________________________
> From: "chip@mach3isp.com" <chip@mach3isp.com>
> To: gmclist@temp.gmcnet.org
> Sent: Fri, November 20, 2009 11:07:31 PM
> Subject: [GMCnet] Engine Compartment Insulation
>
>
>
> HI:
>
> I've got the engine out of my 1977 Clasco. I thought now might be a
> good time to try and insulate
>
> the engine compartment. Maybe knock down some of the heat that
> comes up thru the floors during
>
> our Texas summers ....
>
> Anyone had good success using a certain product / procedure /
> ingenious idea that I will never be
>
> able to think up ?
>
> Thanks - Chip
>
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>
>
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>
>
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| Re: [GMCnet] Engine Compartment Insulation {Source} [message #65386 is a reply to message #65142] |
Mon, 23 November 2009 12:22 |
Firefly
Messages: 98
Registered: May 2008
Location: Augusta, Maine
Karma: 0
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Chip, All:
I posted this some time ago and feel its still relevant:
Re: [GMCnet] Engine Hatch Insulation [message #49652 is a reply to message #49569 ] Thu, 16 July 2009 12:48
Firefly
Messages: 118
Registered: May 2008
Location: Augusta, Maine
Senior Member
If you want the best that technology can offer for this application, I recommend going to the following company (I have no affiliation with them):
ADL Insulflex
8783 Dale Road
Cobourg, Ontario, Canada K9A 4J9
(905) 461-9323
ATTN: Amanda Countryman
http://www.adlinsulflex.com/
I researched this exact issue last October while I was deciding to what extent I would insulate and protect the soon-to-be-replaced floor boards around the engine bay. Jim Bounds had installed some kind of a custom-made blanket at one time but I recall that he didn't feel it was worth the investment (no, I don't recall the cost factors).
I recommend ADL's products because they are designed for applications from industrial internal combustion to rocket motors, etc. and the samples I ordered were exactly what I wanted in terms of temperature resistance and form factor - they make flat "blanket" material, wrapping tape (like for headers), as well as sleeve-type insulation with a variety of mounting options, including high-temp adhesives for sheet goods and Velcro for the sleeves. They will manufacture any assembly from your specs.
The item I am using for the engine bay is PYREFLECT blanket, an ARAMID fiber woven mat with an aluminum lamination. The specs are at:
http://www.adlinsulflex.com/fire-blankets/pyreflect-blanket
The method I will use will be to laminate the blanket to the underside of the new floor panels. After each piece of plywood has been fitted/mocked up, I'll remove them to the climate-controlled shop, laminate and cure the panels before permanent installation of the assembly. I was thinking of using a really thick piece of plexiglass, but it would not be practical because of foot traffic scratches and little insulation value.
Pyreflect™ Fire Blanket - Quick Facts
Continuous operating temp:
650°F (343°C)
Max short term exposure:
1000°F (538°C)
Flame resistance:
Good
Abrasion resistance:
Outstanding
Durability:
Outstanding
Flexibility:
Outstanding
Water and oil resistance:
Outstanding
"Performance lab tested at 3000°F (1650°C) for 1 minute, Pyreflect™ fire blanket reflects at least 90% of radiant heat energy.
Cable and hose protection in extreme heat
An ideal choice for operations where occasional radiant (infrared) flow must be blocked or stopped. The mirror-like surface of Pyreflect™ fire blanket reflects heat away, instead of absorbing heat and dissipating it through the fabric.
Pyreflect™ heat reflective fire blanket is fabricated from two layers of aluminum coating and a protective film, all laminated by means of a heat stable adhesive to a specially designed heavy grade aramid fiber cloth. The aluminum layers of the fire blanket will not delaminate from the cloth, even under the most extreme heat conditions.
Tough performer in tough conditions
Pyreflect fire blanket has extremely durable construction, and can meet the most demanding abrasion and tensile strength requirements.
Stock rolls or custom shapes and closures
Pyreflect™ fire blanket is sold in rolls 40" (1016 mm) wide. It can also be custom fabricated into almost any shape, complete with closures or factory installed grommets to meet your specifications."
Mark Scoble, Lunenburg, MA - 1973 23' Palm Beach Stretched to 32' and in residence at the GMC Co-Op in Orlando, FL
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| Re: [GMCnet] Engine Compartment Insulation [message #65452 is a reply to message #65386] |
Mon, 23 November 2009 23:34 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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When looking at cars/towds, a salesman was making his pitch about the features under the hood of a Grand Vitara. He told me, that in case of fire, the plastic fasteners holding the under-hood insulation where designed to melt and drop the insulation onto the engine and smother the fire.
Might be "salesman BS" but might not...
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: [GMCnet] Engine Compartment Insulation [message #65462 is a reply to message #65452] |
Tue, 24 November 2009 06:04 |
Jim Bounds
Messages: 842
Registered: January 2004
Karma: 0
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Senior Member |
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Dropping the blanket on the motor might make it feel warmer on a cold day but you need to remove O2 from the fire to put it out. My guess that is BS hey, but it sounds good for some! If you wanna protect the motor from a fire like he describes, install one of those cute little Halon fire bottles in the compartment or better yet maybe the AFFF extinguishers that will be out in 2010. I expect to see more talk about active fire protection using automatic fire suppression in all sorts of vehicles next year. If the salesman really wanted to close the sale on safety, for $95 he would have had you!
Jim Bounds
-------------------------
----- Original Message ----
From: Mike Miller <m000035@gmail.com>
To: gmclist@temp.gmcnet.org
Sent: Tue, November 24, 2009 12:34:33 AM
Subject: Re: [GMCnet] Engine Compartment Insulation
When looking at cars/towds, a salesman was making his pitch about the features under the hood of a Grand Vitara. He told me, that in case of fire, the plastic fasteners holding the under-hood insulation where designed to melt and drop the insulation onto the engine and smother the fire.
Might be "salesman BS" but might not...
--
Mike Miller
`73 26' X Painted D.
`78 23' Birchaven
Hillsboro, OR
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