Rusty trunk dropoff lead to more rust.. how to fix? - Vintage Mustang Forums
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post #1 of 2 (permalink) Old 11-11-2018, 09:15 PM Thread Starter
Join Date: Apr 2006
Location: Southern California
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Rusty trunk dropoff lead to more rust.. how to fix?

Not surprising, but I cut out some rust to repair the drivers trunk dropoff and found more rust behind it on the lower quarter panel and the wheel well.
Until now I have only welded parts that nobody will see (floor pans, problems in the frame rails, etc).

Pictures are attached, any suggestions on how you guys would go about repairing this area would be appreciated.

Should I cut out all of the rusted area (maybe 6" x 3") to patch the quarter skin (avoiding the very bottom of the quarter panel where it turns horizontal)?
Or should I buy the lower part of a new quarter panel (if they sell only that) and get the whole thing and replace the bottom as well?
I am concerned if I end up cutting near the bottom lip where the quarter turns horizontal that I won't get a clean bend and match the bodylines.

Any ideas on how exactly to deal with the pinholes in the wheel well area (circled in red in the last picture)?
If I cut out the 6" long quarter skin on the outside, I will probably be able to get to that area.
I just see it being a pain trying to fabricate a fix for that area due to all of the curves going on... thoughts?


Initial rust:

Rust cut out:

Rust inside:

Pinholes in lower quarter panel:

Rusted through outter wheel well:

69 Mustang Fastback... in pieces since 2009.
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post #2 of 2 (permalink) Old 11-11-2018, 09:46 PM
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Location: Peoples Republic of Vermont
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Yes, you can buy a "patch panel" and then section that piece in to fix it. When finished hit the area with a 360* spray wand with an appropriate coating... Master Series Silver, Epoxy Primer, Cavity Wax, etc., through an access hole then plug it.


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- Alfred E. Neuman

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