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Old Nov 24, 2023 | 02:40 PM
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Hood Insulation

Thought I would try something different on my 67. I don't like the full blanket style insulation with clips holding it on so I went with DEI's self adhesive mat and cut panels to fit the divisions in the hood. Looks good to me, just got to work on the wrinkles where it was rolled up in the box.

Old Nov 24, 2023 | 03:12 PM
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A heat lamp or heat gun/hair dryer will soften those wrinkles. I agree this looks better.
Old Nov 24, 2023 | 04:56 PM
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Originally Posted by joe_padavano
A heat lamp or heat gun/hair dryer will soften those wrinkles. I agree this looks better.
I guess engine heat would do the job but I'm going to speed the process with a heat gun or a steamer.
Wonder what Oldsmobile engineers had in mind with the nonsymmetrical structural bracing under the hood. Sure wasn't to save on tooling costs.
Old Nov 24, 2023 | 04:59 PM
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Originally Posted by oldsrush
I guess engine heat would do the job but I'm going to speed the process with a heat gun or a steamer.
Wonder what Oldsmobile engineers had in mind with the nonsymmetrical structural bracing under the hood. Sure wasn't to save on tooling costs.
Looks symmetric to me. The bracing was designed to provide support to prevent oilcanning of the outer panel. There are panel adhesive globs between the inner and outer to stiffen the hood.
Old Nov 24, 2023 | 05:03 PM
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Originally Posted by oldsrush
Wonder what Oldsmobile engineers had in mind with the nonsymmetrical structural bracing under the hood. Sure wasn't to save on tooling costs.
It's possible the area was evaluated and designed as a "crumple zone". The hood buckles to absorb impact, prevent windshield damage and protect driver & front-seat passenger.
Old Nov 24, 2023 | 05:09 PM
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Originally Posted by Vintage Chief
It's possible the area was evaluated and designed as a "crumple zone". The hood buckles to absorb impact, prevent windshield damage and protect driver & front-seat passenger.
The crumple zone design wasn't required until the 1971 model year.
Old Nov 24, 2023 | 05:13 PM
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Originally Posted by joe_padavano
The crumple zone design wasn't required until the 1971 model year.
I realize the fenders were designed with a crumple zone design for 1971, but I'm not certain they weren't thinking of safety in hood design before they moved out to the fenders?
Old Nov 24, 2023 | 05:16 PM
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BTW, I do believe you regarding oil canning, as well - especially flat cold-rolled metal.
Old Nov 26, 2023 | 08:12 AM
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I've never seen it mentioned but was there an aftermarket hood ever offered for a 67 442?
Old Nov 26, 2023 | 08:13 AM
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Originally Posted by oldsrush
I've never seen it mentioned but was there an aftermarket hood ever offered for a 67 442?
If you're asking about a repro metal hood, no. There are aftermarket fiberglass hoods.
Old Nov 26, 2023 | 08:40 AM
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Originally Posted by joe_padavano
If you're asking about a repro metal hood, no. There are aftermarket fiberglass hoods.
I was thinking metal hoods.
Old Nov 26, 2023 | 12:55 PM
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Lots of bubble gum used on the underside.




Old Nov 26, 2023 | 01:09 PM
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Originally Posted by Hairy Olds
Lots of bubble gum used on the underside.



How in the world would you get rid of a mess like that other than cover it up with blanket insulation.
Old Nov 27, 2023 | 09:14 AM
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Looks good.

You think that hood bracing is off, you should see the underside of my '63! If you dont have OCD you will after looking at that haha. I thought I had major problems when I first got the car thinking the bracing was all broken and slid around but after looking at some of the nice original examples here I found it was all normal. Id imagine since the clearance is so low in the engine bay there must have been issues with original air cleaner assemblies? Who knows....... Not sure what they were smoking when they designed that but you could probably get a pretty penny for it even here in California haha.
Old Nov 27, 2023 | 10:54 AM
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Lookin' good!

​​​​​​Did Oldsmobile ever use a hood blanket with their logo on it?
Old Nov 27, 2023 | 03:09 PM
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Originally Posted by Olds64
Lookin' good!

​​​​​​Did Oldsmobile ever use a hood blanket with their logo on it?
Not that I'm aware of but Buick hit a home run with their logo on the Grand National turbo regal in my opinion. I've been playing with the idea of incorporating this on my hood by taking the numbers and recessing them into the insulation.


Old Nov 27, 2023 | 03:20 PM
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Originally Posted by oldsrush
Not that I'm aware of but Buick hit a home run with their logo on the Grand National turbo regal in my opinion. I've been playing with the idea of incorporating this on my hood by taking the numbers and recessing them into the insulation.
I like the idea. I might suggest a different material other than a plastic license plate placard. There are fabric appliques available elsewhere which might prove better to work with in terms of adhesion and appearance.
Old Nov 27, 2023 | 03:28 PM
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There are various other appliques you might research. I think something like this might work well. You might find something larger, but I don't know how LARGE you want it.



https://www.ebay.com/itm/145056904283
Old Nov 27, 2023 | 03:40 PM
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Originally Posted by oldsrush
Thought I would try something different on my 67. I don't like the full blanket style insulation with clips holding it on so I went with DEI's self adhesive mat and cut panels to fit the divisions in the hood. Looks good to me, just got to work on the wrinkles where it was rolled up in the box.
Nice job, I like it. I see the rear center section is asymmetric; are the outboard sections the same?

The hoods on the '64-'67 were very flat, and needed the structure to hold it in place. The bonding foam they used between the two pieces hardens and brakes away over time. It is then that you find out how badly it's needed.

DX-440 works great for removing that old contact cement; heat helps, and so does a drop cloth over your engine bay.

For the last insulation pad I installed I used spray foam; it worked well. The pond and stone version is even even black, but it'd be tough to remove.






Old Nov 27, 2023 | 03:49 PM
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Originally Posted by joe_padavano
Looks symmetric to me. The bracing was designed to provide support to prevent oilcanning of the outer panel. There are panel adhesive globs between the inner and outer to stiffen the hood.
I didn't notice the asymmetry earlier, as well. Since it's been brought up again, I had to look at it again. Now I see it.


Old Nov 27, 2023 | 03:52 PM
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I think that looks pretty dang sharp!
Nice work!

But if I were to engrave something into the insulation it would be the appropriate “Rocket” of that year.
Old Nov 27, 2023 | 04:08 PM
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https://www.ebay.com/itm/386103653478

I have one of these when working on various vehicles. Far larger than the patch I showed you earlier. Cut it out - could work?

Old Nov 27, 2023 | 04:25 PM
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Originally Posted by Vintage Chief
https://www.ebay.com/itm/386103653478

I have one of these when working on various vehicles. Far larger than the patch I showed you earlier. Cut it out - could work?
Need to find someone to buy me one of those for Xmas!

Old Nov 27, 2023 | 04:28 PM
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Originally Posted by Rocketguy
Nice job, I like it. I see the rear center section is asymmetric; are the outboard sections the same?

The hoods on the '64-'67 were very flat, and needed the structure to hold it in place. The bonding foam they used between the two pieces hardens and brakes away over time. It is then that you find out how badly it's needed.

DX-440 works great for removing that old contact cement; heat helps, and so does a drop cloth over your engine bay.

For the last insulation pad I installed I used spray foam; it worked well. The pond and stone version is even even black, but it'd be tough to remove.

One pattern worked for both sides.
Old Nov 27, 2023 | 05:29 PM
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Cutting that out does look really good. I like it. Nice work. The big mats they put under these hoods are kinda fugly.
Old Nov 27, 2023 | 05:54 PM
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I'm thinking the texture of this material would be suitable for screen printing. Just like the fender cover is done. Think I will look into that. Thanks Vintage Chief for getting my brain kick started!
Old Feb 9, 2024 | 09:10 AM
  #27  
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Finally got the 442 logo finished on a piece of hood insulation. Turned out pretty good. It will be a few weeks before I can remove the hood and install it.

Old Feb 9, 2024 | 01:26 PM
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Awesome, can't wait to see it installed.
Old Feb 9, 2024 | 01:46 PM
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Nice job.
Old Feb 11, 2024 | 01:00 PM
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That is a great idea and came out fantastic. How was it applied?
Old Feb 11, 2024 | 02:01 PM
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Originally Posted by herkguy
That is a great idea and came out fantastic. How was it applied?
They screen print it onto transfer paper and then apply it to the insulation with heat. Took about 10 minutes. Biggest cost was $30 for computer setup time.
Old Feb 11, 2024 | 02:12 PM
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That’s a really good deal…what kind of shop does one go looking for for that?
Old Feb 11, 2024 | 02:21 PM
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Originally Posted by oldsrush
Finally got the 442 logo finished on a piece of hood insulation. Turned out pretty good. It will be a few weeks before I can remove the hood and install it.
A hat logo that I had designed & copyrighted. I will have my lawyer call your lawyer.

Old Feb 11, 2024 | 02:32 PM
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Originally Posted by 66-3X2 442
A hat logo that I had designed & copyrighted. I will have my lawyer call your lawyer.
Love it. Of course, as you know, copyright protection only applies if the other party is using the IP for profit. One is free to use copyrighted IP for personal reasons without paying a royalty. This is why it's OK to photocopy a copyrighted book, for example.
Old Feb 11, 2024 | 02:33 PM
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Originally Posted by 66-3X2 442
A hat logo that I had designed & copyrighted. I will have my lawyer call your lawyer.
Ha Ha Ha....I know at least two members on here that have one just like it
Old Feb 11, 2024 | 02:46 PM
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Originally Posted by oldsrush
Ha Ha Ha....I know at least two members on here that have one just like it
I'm not suing you for everything you have, just half of it. I love the hat & you're a good man Charlie Brown. Tanks Again.
Old Feb 11, 2024 | 06:02 PM
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I'm going to assume neither work licensed the 442 marque from GM in the first place.
Old Feb 13, 2024 | 01:50 PM
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Originally Posted by herkguy
That’s a really good deal…what kind of shop does one go looking for for that?
I used a shop that screen prints t-shirts and etc.
Old Feb 15, 2024 | 03:30 PM
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I really like the job you did of your hood insulation. What DEI part number did you buy. I would like to make one for my 66 442.

Thanks Jim
Old Feb 15, 2024 | 05:44 PM
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Originally Posted by JRSL69
I really like the job you did of your hood insulation. What DEI part number did you buy. I would like to make one for my 66 442.

Thanks Jim
Black Under Hood™ Thermal Acoustic Liner - 32" x 59" - Design Engineering, Inc

Problem with this material is they roll it up in a box to ship which causes wrinkles that I cannot get out so far. They ship all of their kits flat in a box except this item. I tried hard to get them to ship me some pieces cut in half and flat ship but they said no at any price. Big jerks! And they have boxes on hand the right size. I offered them a $200 digitizing fee and my patterns so they could offer Cutlass kits and they still said no. Also, I had to buy 2 kits for enough material to do one hood.



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