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The only practical repair for a rust hole in the frame is to cut out the oxidized material and weld in a replacement piece. Note that what you are looking at may be the tip of the iceberg so you need to carefully assess the entire area. Using a “filler” does not restore the frame’s strength which, clearly, is not what is in the best interest of anyone driving the car.
QUOTE=69L88;1607121248]The only practical repair for a rust hole in the frame is to cut out the oxidized material and weld in a replacement piece. Note that what you are looking at may be the tip of the iceberg so you need to carefully assess the entire area. Using a “filler” does not restore the frame’s strength which, clearly, is not what in the best interest of anyone driving the car.[/QUOTE]
Ditto on looking at the frame. Look especially hard in and around the frame kickups by the truck arms. It’s hard to see. You might need an inspection camera, long flat head screw driver, and air compressor. The frame in that that area is know to rot out but not be detected due to it getting packed with stuff and just the lack of general visibility particularly to the top of the frame rail thus the inspection camera. If this is rotted out you need to consider your next moves carefully because at that point the body has to come off the car to repair it (major structural point on the car).
You’ll want to know what the bird cage looks like as well. If the birdcage is rotted out as well I’d say getting the car back safe and right will be very expensive. If it’s just isolated to parts of the frame a donor frame or having the frame repaired isn’t terribly expensive as long as it’s just 1-2 sections.
From: At my Bar drinking and wrenching in Lafayette Colorado
Yup, the only thing you do with rust is cut it out and weld in new material. Here is a typical Vette frame from a East Coast car I worked on, and this is what you do with it:
Cut it out, and weld in new material. There is no other option. You can buy new metal for all parts of the Corvette frame.
Lars
thank you, I checked out carefully a looks just a little damage in the center of the cross member in front of differential. I’ll need to take to someone to weld and fix.
QUOTE=kossuth;1607121704]Ditto on looking at the frame. Look especially hard in and around the frame kickups by the truck arms. It’s hard to see. You might need an inspection camera, long flat head screw driver, and air compressor. The frame in that that area is know to rot out but not be detected due to it getting packed with stuff and just the lack of general visibility particularly to the top of the frame rail thus the inspection camera. If this is rotted out you need to consider your next moves carefully because at that point the body has to come off the car to repair it (major structural point on the car).
You’ll want to know what the bird cage looks like as well. If the birdcage is rotted out as well I’d say getting the car back safe and right will be very expensive. If it’s just isolated to parts of the frame a donor frame or having the frame repaired isn’t terribly expensive as long as it’s just 1-2 sections.[/QUOTE]
thank you, I checked out carefully a looks just a little damage in the center of the cross member in front of differential. I’ll need to take to someone to weld and fix.
So you spray the cavity with spray foam, trim the excess after it expands and sets up, fiberglass over it, apply bondo, sand it and shape it and hit it with some spray paint....don't forget the spray paint and don't cheap out on the foam, get the good stuff. We're talking structural frame repair here......no seriously don't do anything I just said....no cover ups, no rust converters or naval jelly's. Do it right. Cut the rust out and replace it
