Author Topic: Fixing rear window channel and quarter to roof seams  (Read 873 times)

Offline glovemeister

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Fixing rear window channel and quarter to roof seams
« on: October 30, 2013 - 12:51:08 AM »
Looking for some advice on fixing the rear window channel. It has a few pin holes. Would it be better to fill them with weld or do a patch?

Also what about the quarter to roof seams? They are of course cracked on both sides and have been bondoed by one of the previous owners. I don't exactly know how bad as I haven't sand blasted the car yet. What is everyone doing to fix that problem? I figured I would weld them and use flat bar and weld that as well and then a thin layer of a filler?

What is everyone's favorite product for filler these days?



1971 Challenger RT




Offline Kapteenikosmos

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Re: Fixing rear window channel and quarter to roof seams
« Reply #1 on: October 30, 2013 - 06:30:51 AM »
Looking for some advice on fixing the rear window channel. It has a few pin holes. Would it be better to fill them with weld or do a patch?

Also what about the quarter to roof seams? They are of course cracked on both sides and have been bondoed by one of the previous owners. I don't exactly know how bad as I haven't sand blasted the car yet. What is everyone doing to fix that problem? I figured I would weld them and use flat bar and weld that as well and then a thin layer of a filler?

What is everyone's favorite product for filler these days?

If it only has some pin holes, I would take a flat piece of copper and keep it under the pinholes and weld the holes shut with a mig. The copper helps to transfer some heat and also works as a "mold"  under the hole so the filling does not become unwanted enlarging so easily.

I had to make some patches to the quarter to roof seam and then applied some lead to fill up the deepest areas and a light coat of filler on top of it.

I cannot comment on the filler because we most likely have different filler brands here in Finland than in US. I did try out about 5 different brands and the best for me was brand called "Autoseal" or something like that. I also used fiberglass reinforced filler on some areas that needed bit heavier coat and are subject to vibrations etc.
Ville

1967 six banger Mustang
1973 Challenger (under restoration)
1997 Lincoln Mark VIII LSC (daily driver)

Offline glovemeister

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Re: Fixing rear window channel and quarter to roof seams
« Reply #2 on: October 30, 2013 - 12:17:03 PM »
Thanks bud I appreciate the advice!
1971 Challenger RT

Offline Edison1970

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Re: Fixing rear window channel and quarter to roof seams
« Reply #3 on: October 30, 2013 - 07:48:21 PM »
I just fixed the passenger side of the rear window channel.  Mine had some rust pitting and the corner had a few that went through.  I just cut it out with my air saw right to the edge where it rolls into a flat area.  If you cut it out, you never have to worry about it again.

Offline jimynick

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Re: Fixing rear window channel and quarter to roof seams
« Reply #4 on: October 30, 2013 - 10:53:14 PM »
I just fixed the passenger side of the rear window channel.  Mine had some rust pitting and the corner had a few that went through.  I just cut it out with my air saw right to the edge where it rolls into a flat area.  If you cut it out, you never have to worry about it again.
:iagree:  He's right; if there's pinholes now, there'll be pinholes later. As for the 1/4 seams, the factory used solder for a reason and it's still the best way to go. The reason for the cracks is the flexing, so a set of subframe connectors would go a long ways toward fixing that. Just my  :2cents: