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Old 06-09-2021, 07:33 PM
Joe's Garage Joe's Garage is offline
Chief Ponti-yacker
 
Join Date: Oct 2016
Location: Las Vega$, NV
Posts: 638
Default We've got a couple of weirdly rusted areas on our 1974 SD.

It lived somewhere in the south early in its' life - I'm thinking Mississippi, but my memory is fuzzy.

Then moved to SoCal for a couple decades and finally ended up with us about twelve years ago.

One vertical area on the driver's fender almost looked like what unruhjohnny described, like it dissolved. Also has rust in the trunk floor, and a little in the passenger-side floorboards. Frame rails look good though.

We 'presumed' that maybe the fenders had been acid-dipped for racing (?), since the previous owner did a little drag racing with it.....

Now there is a second probability. Factory defective sheet metal.

I'll have to get a pic of the fender when I'm at the warehouse next time.