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Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Body - Exterior> Hood insulation
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Topic Review (Newest First)
04-12-2018 11:53 PM
'49 Ford Coupe Try's just GREAT, don't need adhesive, sticks great, easy to cut to fit, be sure to confirm that the size will work for you..
04-12-2018 09:27 PM
OneMoreTime Look at this stuff..has a silver metallic finish on one side and attach with big plastic washers. Score it to fit curves and cover seams with aluminum duct tape.. Works on firewalls as well.

04-12-2018 04:51 PM
75gmck25 The OEM hood insulation on my truck was fiberglass, similar to the first link. It works okay if not disturbed, but cannot take any type of damage without starting to fall apart. Mine got wet from mud during an off-road session, and within a few days it was falling apart and coming off the hood. GM used large diameter push-in plastic retainers/washers to hold it on the hood (no adhesive), so I was left with bits of insulation hanging around each of the plastic retainers.

The Dynamat should work better, if its not too hard to get it to stick. I may add some of that to my hood to try to absorb the noise from the clutch fan and engine. It can get really loud at certain RPMs.

04-12-2018 03:52 PM
39 master
Hood insulation

Most of the newer cars/trucks use the hood insulation as a fire suppressor. If there is a fire under the hood the material is suppose to melt down over the fire and smother it.
04-12-2018 12:56 PM
55_327 Good question! I'm not sure why factories used them unless it was for noise reduction.
04-12-2018 12:18 PM
ogre i'll ask... why?
firewall insulation is typically for sound and noise thru the firewall
what purpose would hood insulation do for a car hood?
04-12-2018 07:50 AM
Hood insulation

I'd like to hear your hood insulation suggestions based on actual experience. Currently looking at Metro

and Dynamat

FWIW, it's for a 37 Chevy with stock hood top sections welded into one-piece.


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