JBrooke825

I got in my head a while ago that I would like to put that strip
Of insulation on the underside of the hood. It has 3 plastic pins
And metal washers that snap on to them. Does anyone know
What holds those 3 plastic pin on the hood? .thanks.

Faster Rat

Weatherstrip adhesive

Alan 71

Hi JB,
The 69 AIM indicates the adhesive to install the 3 pins was #81098.
There is a long list of uses for this material including applying weather stripping as FR indicates
Was it really weatherstrip adhesive?
Regards,
Alan

JBrooke825

Thanks Alan , I’ll give it a try .

HeadsU.P.

Alan, why couldn't those pins been set in place in the bottom of the mold just before either the upper half of the mold was installed or fiberglass was injected in at the factory? Seems like those pins are really on there strong. I ended up taking a Dremel Tool and grinding them off.

red topless gator

What are you using for hood insulation, if any, once the pins were removed.?
Thanks
Larry

HeadsU.P.

NOTHING! I never did see the reasoning behind the insulation (aka blanket). Evidently, customers back in the early 70s complained about too much engine noise. So GMs designers decided it was a good idea to put some sound deadening under the hood.
So lets think about this for a minute. We have a vehicle that is prone to extra heat under the hood. We have hundreds of forum members trying to figure out how to rid the heat. So we have a blanket over the engine. H-m-m-m-m. Might be a good idea in Antartica, but no where else. Rip that crap out of there, cut the pins off. Its not needed IMHO. And no, the hood paint will not be damaged even on the hottest days.

red topless gator

I agree 100%, just thought you had another idea to make the hood underneath better looking. I have been trying to find a decorative underhood piece but have been unable. There are plenty for C5s but not for C3s.

HeadsU.P.

Yes, I hear you on the decor for open hood car shows display. Found a couple huge decor stickers using Google, but no warranty on the graphics regarding the heat coming off the engine. Likely melt if vinyl. So, I scrubbed the hood undeside, covered the fenders and hit the underside with a VHT flat black. Its not beautiful, but its not ugly. A whole lot better than some crappy, rotting, oil stained blanket held by pins.

Update: The only graphic I can think of that would look awsome under the hood would be one of those large metal, garage wall signs pertaining to Vettes. It would have to be bent to fit the curvature of the hood but the paint should hold up. I have seen some nice ones at a Hobby Lobby yrs ago. Try EBay.

Alan 71

Hi HU.P.,
"Alan, why couldn't those pins been set in place in the bottom of the mold just before either the upper half of the mold was installed or fiberglass was injected in at the factory? Seems like those pins are really on there strong. I ended up taking a Dremel Tool and grinding them off".

???
I don't know.
The 68-69 TIM&JG indicates the insulation was used sporadically, mostly on bb cars and those with a/c, and then disappeared.
Again... ???... why was it needed (what was it's purpose?) and what happened during 69 production that allowed it to disappear?
Regards,
Alan

The photos I see of the original insulation on cars show a much smaller piece of insulation than that shown in the 69 AIM. It SEEMS to be in a place (far forward) that it would cover the radiator and fan shroud when the hood is closed?

lvmyvt76

some just prep the underside and paint it with air-brush scenes or just the same color as the car was painted. I am having a hood painted for my car now, have not decided what to do with the underside yet.

Faster Rat

The OP was asking about how to properly reinstall the hood insulation that his car left the factory with. Being that the car is an original 1969 big bock tripower, proper restoration is the only way to go.

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?

Faster Rat

I also have a 1969 big block that I am restoring to original as much as I can. I love the way the car left the factory and have no desire to modify it at all. If you want to modify your car, start your own thread rather than hijacking one where somebody that is interested in restoration asks a simple question.

HeadsU.P.

I did not hijack. Op asked a question. I answered. You don't know what hijack means. Move on, start your own thread or answer a question.

Faster Rat

Learn how to read. The OP asked "Does anyone know What holds those 3 plastic pin on the hood? I answered "Weatherstrip adhesive." He asked nothing else and just responded to Alan 71. I have no idea where the rest of you came up with this other crap. Why don't YOU take a hike...

JBrooke825

The car has ac and the compressor is right near the bottom of the hood.
I just thought the insulation would stop any fluids from getting onto
The underside of the hood or in the fiberglass. the insulation is only
A small piece. The whole hood insulation is a different thing. I will try
The contact cement. And see what happens. Thanks for everyone’s
Advice!
Y

HeadsU.P.

To "hijack" means to take over the thread, with ones own problems with ones own car.
Which I did not do.
You have shown your true self and I will remember your name.
Have a nice day.

Faster Rat

Whatever. I could not care less. Add me to your ignore list, because you are going on mine.

lvmyvt76

you are on my list also fat rat there is no reason to talk this way, if he does not want to read our posts, then don't, I mean this is a forum to get IDEAS, right???? nothing was said in the first posts about it being an all original car. Stop trying to be a bully on here.
have a nice day ,AND it said nowhere in his first post that this car is an original and going for the blue ribbon, how are we to know that??