Quote:
Originally Posted by rw7810
Well i'd use what ever tool you used on the underside on the inside ans see what's going on. It might be a simple as a small cutout and weld in new metal
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The rust has come through from the inside of the car so the damage would be worse from the inside. (Captain obvious?)
Have you removed the battery tray? (Assuming a 70 is similar to my 78)
I have a similar hole in my car and I'm planning to cut out the battery tray out to get to the top of the damaged area.
I'm dreading it big time because I expect to find more rust.
The plan is to remove most of the tray, leaving a 20mm edged all the way around... Then repair the rust hole by patching, paint, etc.
Then replace the tray with something I'll make myself from a plastic bread board or similar attached to the 20mm edge.