Another Prototype Gasket in the (it's already here) Edition- Can't Believe They Haven't Repro'd This One

1988SS

Apprentice
May 9, 2020
60
11
8
Has it on my 88 MCSS....crusty but it's mostly there. Do you have to drill out that rivet to replace it?
 

69hurstolds

Geezer
Supporting Member
Jan 2, 2006
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Has it on my 88 MCSS....crusty but it's mostly there. Do you have to drill out that rivet to replace it?
Yes. Rivet must be removed, then reinstall a new rivet when reassembling. The rivet pulls it tight up against the trunklid effectively smooshing (technical term) the gasket in between.

A good time to clean up old wax and ingrained dirt around the trunk lock gasket area (your car's bellybutton lint), or even replace the trunk lock gasket itself. Which I have several of the 20030348 trunk lock cylinder gaskets, too, if you need any.

Trunk Lock Cylinder Gasket.jpg
 
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69hurstolds

Geezer
Supporting Member
Jan 2, 2006
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Oh, for those looking for a rivet size for the retainer, I BELIEVE (but not 4imprint certain) it's a 1/8" steel rivet. I'm not a rivet expert, but I do understand how to navigate the trade size charts. But GM doesn't quite hit the mark defining junk like rivets and other fasteners sometimes.

I couldn't find a GM p/n SPECIFICALLY for the G-body rivet itself, but it's listed for B, C, E, and X body. GM p/n 9426957 which superseded to 9441669. I can't see the G-body NOT using the same rivet. I fugged mine up on the H/O when I popped it out, to try and get the size I used and replace the gasket while I was in there, but the smallest I had on hand was a 3/16" and it was too big. Fit nicely in the retainer's hole, but the trunklid hole it would not go.

Info I found for rivet 9441669 is: Rivet, 1/8 x 0.255, 0.129. (I'm guessing this is 1/8" stem diameter, 0.255" length?, with 0.129 hole size.

Also for the same part number 9426957, got: Rivet, "Type P" (I assume this is GM's code for pop rivet, or pull rivet), 1-7/16 overall length (includes stem in the length for some stupid reason) x 5/64 diameter x 1/8 hole size. Weird.

And then there's THIS:

1715456465838.png
 
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Ugly1

Royal Smart Person
Oct 26, 2021
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Lost in the woods of NH
Sounds to me you should contact some of the g body parts companies and sell them for possible profit. There’s a guy in Keene NH that does repop screws for Mopar’s and can’t make them fast enough. They are not a common screw to find so…And if you do a gasket and rivet kit well 😏
 

69hurstolds

Geezer
Supporting Member
Jan 2, 2006
8,259
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Sounds to me you should contact some of the g body parts companies and sell them for possible profit. There’s a guy in Keene NH that does repop screws for Mopar’s and can’t make them fast enough. They are not a common screw to find so…And if you do a gasket and rivet kit well 😏
You can still buy the rivet 9441669 from GM. For around $7.20 list price. YUP. Crazy crap. I'm sure you can get one from somewhere else for cheaper.
 

88hurstolds

Royal Smart Person
Jun 24, 2008
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You can still buy the rivet 9441669 from GM. For around $7.20 list price. YUP. Crazy crap. I'm sure you can get one from somewhere else for cheaper.
I've found $6 shipped from one of the few dealers if you bought 5 at $5 shipping. Not sure it's worth it...
 

69hurstolds

Geezer
Supporting Member
Jan 2, 2006
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I've found $6 shipped from one of the few dealers if you bought 5 at $5 shipping. Not sure it's worth it...
I got the correct size with the bigger heads coming in the mail. Steel like original. 25 in the pack for $10 shipped. It’s nothing special IMO.
 

88hurstolds

Royal Smart Person
Jun 24, 2008
1,754
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I got the correct size with the bigger heads coming in the mail. Steel like original. 25 in the pack for $10 shipped. It’s nothing special IMO.
source?
 

69hurstolds

Geezer
Supporting Member
Jan 2, 2006
8,259
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Fleabay. Actually it was a bit less than 10 bucks. Not sure about quality. If it were a special size and finish, etc., I'd probably spend the coin and get a GM one, but since it's not...

 
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