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Old 06-24-2009, 07:42 AM
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Hood Insulation Recommendations - 54 Chevy Truck

I have tried to locate options for underhood insulation blanket/pads to use on my 54. The ones I have found so far all have a foil facing which is not what I want to see when I pop the hood.

Does anyone have experience with a cut to fit insulation at least 1/4 inch thick?

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Old 06-24-2009, 09:14 PM
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Houston54,

The "purist" will probably want to tar-and-feather me, but when I replaced the under-hood insulation (which is in fact five separate pieces) on my '63 T'Bird, I went to Harbor Freight (the shame of it all!! ) and bought a package of their interlocking black floor "fatigue" mats. They are 24" x 24" x 1/2", and come four to the pack for about $10. I made cardboard patterns to fit the hood spaces and then cut the mat with an electric fish fillet knife. I glued them to the underside of tha hood using HHR spay adhesive.

Turned out pretty good if I do say so myself!!

Will PM you a couple of pictures if intersted.

texastomeh
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Old 06-25-2009, 10:08 AM
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Pretty original solution but I am hoping to find something more along the lines of the grey fiber based material. All I am finding are molded versions for late models. Closest so far is some material from Soffseal cut to fit early cadillacs. Would need two to cover my needs.
Thanks for the reply.
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Old 06-25-2009, 10:19 AM
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How about the first one listed-the Part # HPKINS101?

http://www.cmwauto.com/MainMenu/Unde...vyHoodPads.htm
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Old 06-26-2009, 12:52 AM
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Hood insulation

I need an education.

Why does one install hood insulation when underhood temps cause so many problems?
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Old 06-26-2009, 08:44 AM
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35W - Thanks for the link. That may be the ticket.

001- I am wanting to insulate the hood on this truck to prevent damage to the paint. The hood is a single layer of sheetmetal and the temps here in Houston can be extreme. Without the insulation the paint on top of the hood could crack/blister/flake even with proper prep and application.

Hood insulation is common place on vehicles.

The truck is driven daily and I am more concerned with preserving the outside paint than I am with how the underside of the hood appears.

If your project is a part time driver or car show special under-hood insulation may not be the presentation you are looking for.
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Old 06-26-2009, 11:56 AM
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I have run several cars with out hood insulation and have never had an issue with paint damage due to under-hood temps.

The sun has been the biggest enemy to my paint jobs.

If you trap the heat under-hood, won't you be stressing the engine compartment paint more. It is more difficult to repaint engine compartment.

I do realize that factory cars come with hood insulation.

One way to minimize under-hood temps is to use a mechanical fan which provides non-stop cooling air.

If you use the insulation, do make sure it does not drop down and cause a fire hazard.

Last edited by 001mustang; 06-26-2009 at 12:01 PM.
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Old 06-26-2009, 12:02 PM
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Neither my wife's red car nor my very black '06 V10 pickup have hood insulation - and no hood paint damage. Thinking back, I can't recall what was my last car to have this stuff - not my '86 or '79 Mustangs - possibly one of my '70's Torinos. That insulation seems to have been cost reduced out of (most) new cars.
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Old 06-26-2009, 02:48 PM
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I do not have clearance to use a mechanical fan on this truck.

I don't think the heat becomes trapped under the hood as its normal exit path is down under the cab or out the fenderwells when the truck is in motion. Sitting in traffic though it is not evacuated but the heat build up would not be any more than it would be without the insulation.

The effect of the heat on the paint would occur over a number of years and although some might not think it is needed to me it is cheap insurance to keep from having to redo the paint.

It also keeps me from having to paint the underside of the hood in the base/clear that is going on the topside.
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Old 06-26-2009, 05:05 PM
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On my elec fan car I set one fan to turn on early to minimize under hood temps.

In stop and go traffic excessive amounts of fuel vaporizes in a hot engine compartment; wasting fuel and can even cause a vapor lock situation.

I would expect the insulation to hold heat in engine compartment longer.

If you like the insulation that's fine; many factory cars came that way. I just don't know why?
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