Project: T Top Stop Leak

Winkernod

Winkernod

Greasemonkey
Sep 13, 2018
127
43
London Ontario
My 1980 Grand Prix has always had a a "minor" leak from the T top. It only leaked when there was a prolonged or heavy rain on the drivers side,i never noticed any water in the passenger side. so I grabbed the weatherstrip kit and started disassembly. And as I am cleaning up all of the adhesive and butyl sealer and what ever else has been used over the years I uncovered the expected. However on the other side then I thought, drivers side is in good shape. Not as bad as I have seen but still needs attention. I removed the weatherstrip rails that were badly rotted on the front
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So I now have some welding to do. I have already applied Evapo Rust to the whole area.

Now i need some ideas on how to proceed after getting every thing welded up. My thoughts are to do an epoxy primer over all of it then using something like JB Weld to fasten the new weatherstrip rails in place so that there is no gaps underneath then some paint. Also what to use for the foam that was under the screwed on plates. I assume that was used as an anti rattle.
 
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S

Silent viewer

Royal Smart Person
May 9, 2007
1,466
63
They make the entire header piece to replace the whole section. I think it is like 100 shipped off of rockauto. I am replacing mine right now, it is not hard. Almost all T top cars that have not been stored inside their enotire existence have the same problem. The hardest part is having to pull the windshield
 
S

Silent viewer

Royal Smart Person
May 9, 2007
1,466
63
They always look solid, my money from tearing several of these apart, the underside is likely far rustier than you think. You could try to patch them off of the goodmark parts I suppose.
 
69hurstolds

69hurstolds

Comic Book Super Hero
Supporting Member
Jan 2, 2006
3,638
113
Whatever you do, paint or coat that area inside outside upside down after the repair. This way, any moisture that does make it to the metal doesn't have anything to convert to rust.

Although I'm not sure I'd use JBWeld for weatherstrip channel adhesive. Butyl or some other flexible adhesive may do you better in the event you ever had to do this job again.
 
pontiacgp

pontiacgp

Canadian Prime Minister
Mar 31, 2006
27,188
113
Kitchener, Ontario
 
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Winkernod

Winkernod

Greasemonkey
Sep 13, 2018
127
43
London Ontario
Thanks PontiacGP. that is a good write up, just wished the pictures worked. 69Hurstolds I agree flexable butyl might be better. I just wanted to make sure that no moisture got in between the header and the weatherstrip rails.
 
C

CDUNIGAN1981

Greasemonkey
Mar 15, 2015
188
43
"Big blob of caulk"
Lol..straight out of factory procedure.
I'm only dead serious! SMH
 
Winkernod

Winkernod

Greasemonkey
Sep 13, 2018
127
43
London Ontario
So been poking away at getting this cleaned up and patches made and welded have actually made what I hope is a solid plan.

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Etched with POR15 metal prep
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coated with POR15
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Completely painted with POR15 rust topcoat/rust paint (it takes UV rays)
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Next step is to get the T-Top kit I will be attaching the weather strip rails with 3M panel bond.
 

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