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Old Jan 9, 2018 | 08:46 AM
  #21  
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The pins look to be bonded on with panel adhesive, or at least epoxy. I don't think epoxy would last through the heat underhood.
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Old Jan 9, 2018 | 06:24 PM
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Originally Posted by slofut
The pins look to be bonded on with panel adhesive, or at least epoxy. I don't think epoxy would last through the heat underhood.
I think you may be right.
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Old Jan 9, 2018 | 06:51 PM
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Originally Posted by HeadsU.P.
No, OP wants to know what holds the pins on the hood. Says might restore.
And just because some idea was great 40 yrs ago does not mean its a good idea now.
I have seen videos on YouTube where those hood blankets burst into flames from a hot engine. You really want to restore and keep all that heat in?
Look out, you are dealing with an NCRS type who is only satisfied if the car is built like original. It hopeless, no sense wasting time trying to make the rat understand. The hood insulation is nothing more than sound insulation, but makes sense it would increase heat in the engine bay.....and it certainly is correct that they have burst into flames. Not to mention it looks horrible. I removed the insulation from my hood, ground off the clips, and it looks cleaner and much nicer.....and if anyone brings up the issue that heat can damage paint without the insulation, ignore them....its B.S.

Last edited by Shovels and Vettes; Jan 9, 2018 at 07:07 PM.
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Old Jan 9, 2018 | 07:56 PM
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Originally Posted by iwasmenowhesgone
Look out, you are dealing with an NCRS type who is only satisfied if the car is built like original. It hopeless, no sense wasting time trying to make the rat understand. The hood insulation is nothing more than sound insulation, but makes sense it would increase heat in the engine bay.....and it certainly is correct that they have burst into flames. Not to mention it looks horrible. I removed the insulation from my hood, ground off the clips, and it looks cleaner and much nicer.....and if anyone brings up the issue that heat can damage paint without the insulation, ignore them....its B.S.
69 insulation only covers the radiator. Not the whole hood. Find another
Post to badger. You don’t understand. And maybe mind your on dam business.
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Old Jan 9, 2018 | 08:08 PM
  #25  
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Originally Posted by JBrooke825
69 insulation only covers the radiator. Not the whole hood. Find another
Post to badger. You don’t understand. And maybe mind your on dam business.
Whoa, easy there big fella. No need to attack someone for posting their opinon. How would someone know about what size the blanket is anyway?
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Old Jan 10, 2018 | 11:16 AM
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Or try something different.
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Old Jan 10, 2018 | 03:39 PM
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H-m-m-m-m-m-m. Interesting material. Looks fire proof. However, looks more like a "heat barrier" than a sound deadner. I would be concerned about this material reflecting heat back towards the engine, instead of allowing heat to escape, via the hood.
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Old Jan 10, 2018 | 04:34 PM
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The original is fiberglass insulation. Not much of a sound deadener but would help slightly maybe when closing the hood. I think it was put there to keep some of the heat down for the benefit of the paint over a period of time. Same technique was used on most gm and most everything else of the era. Doubt it was truly effective. Lots better products available today.

Last edited by slofut; Jan 10, 2018 at 04:35 PM.
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Old Jan 10, 2018 | 04:36 PM
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My question would be what years had insulation? It's clear that my '71 SB never had it. Another interesting what year had it what year didn't thread.
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Old Jan 10, 2018 | 08:15 PM
  #30  
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Like the old saying goes, you can lead a horse to water but you can't make him drink. This thread is going nowhere.

Being a self-proclaimed "factory original type" owner, I do not post on ANY threads that involve modifications to any C3. I do not put down or disparage those who do, despite being called a "TACO" or NCRS "Weenie" or labeled "hopeless" or "a waste of time" by a few on this forum. I only wish that those who do modify their cars would refrain from posting their "opinions" on threads where the OP is not interested in modifying his/her car, but merely asking for help from someone with knowledge about how to proceed. Is that too much to ask?
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Old Jan 10, 2018 | 10:12 PM
  #31  
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this hood insulation is the same material that I sold for years, used in heating ducts, to keep the heat inside the duct work, it might help a little in noise prevention, but primarily keeping heat inside the ducts to blow out the vents to the cold rooms.

Last edited by lvmyvt76; Jan 10, 2018 at 10:12 PM.
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Old Jan 10, 2018 | 10:37 PM
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Originally Posted by lvmyvt76
this hood insulation is the same material that I sold for years, used in heating ducts, to keep the heat inside the duct work, it might help a little in noise prevention, but primarily keeping heat inside the ducts to blow out the vents to the cold rooms.
That’s exactly what it is,I think it only redirects air down and through
The radiator.it only covers the engine by a couple of inches.
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Old Jan 11, 2018 | 10:36 AM
  #33  
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I misunderstood the original question. I thought the OP was asking how the factory installed those pins and how to remove them if one so desires. I thought the pins were already on the hood and now what? He said he was thinking on wether to install the blanket or not.
Just IMHO, it may look all original with the blanket, but that insulation is a accident waiting to happen for fire reasons. And now I know why some C3 owners temp gauges are running 210-230. I bet if one removed that warm blanket, the coolant temp would drop 10* or more. Mine, even on the hottest summer days, never goes over 200. No blanket. But I understand if you want factory look.
Its funny that cars went for decades (40s-60s) without any blanket attached under the hood and still don't today. Never burned the paint.
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Old Jan 11, 2018 | 04:53 PM
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Not a big deal ,the contact cement held fine
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Old Jan 11, 2018 | 05:53 PM
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That one is a "H" of a lot smaller than I thought it would be. The one that was on mine went almost to the windshield. It was a true blanket with soft woven like material.

Last edited by HeadsU.P.; Jan 11, 2018 at 06:14 PM.
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Old Jan 11, 2018 | 05:56 PM
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Originally Posted by HeadsU.P.
That one is a H of a lot smaller than I thought it would be. The one that was on mine went almost to the windshield. It was a true blanket with soft woven like material.
I knew that is what everyone was talking about.
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