Replacing skin to frame adhesive (trunk lid)

CJK440

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I am working on a '74 Camaro and the trunk lid is in otherwise condition but the globs of adhesive that separate the skin from the inner frame have broken loose. Therefore the skin oilcans easily without anything supporting it, maybe at the center of the skin it can push 1/8" travel inwards until it hits the frame.

I am not sure what the factory used, just blobs of seam sealer? But what can I used to replicate the function of this on an finish skinned trunk lid? Is there an expandable urethane type product that can be administered via a tube or something in existing holes? Whatever it is, it needs to not shrink or expand with any force when curing so it doesn't distort the skin.
 
In 74 the only adhesive they were using was a type of foam to insulate the brace from the skin on the hood.

This is what you want to use to replace the factory foam. It doesn't expand. You'll need a Duramix 200ml compatible gun to use the product.


TDS:https://www.johnsonautobodysupply.com/media/pdf/MMM-04274-TDS-nvh-dampening-material.pdf
 
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Thanks. The chunks that broke free and rattled out seem pretty dense and hard, not like any sort of foam. The same lid was used from 70-81 so if GM changed at some point this could be off a different year. I did find some compressible foam like substance between the intrusion beam and door skin, wasn't a rigid material like what fell out of the trunk lid.

So I need the NVH stuff anyway to skin the doors. Will it cure stiff enough to resist deformation when blocking the trunk lid?
 
Thanks. The chunks that broke free and rattled out seem pretty dense and hard, not like any sort of foam. The same lid was used from 70-81 so if GM changed at some point this could be off a different year. I did find some compressible foam like substance between the intrusion beam and door skin, wasn't a rigid material like what fell out of the trunk lid.

So I need the NVH stuff anyway to skin the doors. Will it cure stiff enough to resist deformation when blocking the trunk lid?
If it’s deforming you may be pushing down too hard. If you are still getting oil caning you may have a “crown support” issue that stems from dents/body damage.


 
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