75 ford f100 rust problems
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75 ford f100 rust problems
My floorpans are swiss cheese. they badly need to be replaced. For a 1975 ford f100, what should I look out for in this job, and how should I prepare for it? what pitfalls should I avoid? what should I set my mig welder to based on my sheet metal gage? Should I worry about splatter?
what are all these panels underneath the truck in front of the floorpan, (in the area of the gas and brake petal) and how do I work around them?
Here's what I'm thinking about doing. first, I am going to sandblast the entire floor, then I'm going to lay the new floor pan down over the old one. Next I will tack weld one corner in place, and cut the old floorpan out from under it (avoiding lines, cables, and wires underneath) . once I do that, I will weld in 3-4 inch strips being careful not to overheat and warp my metal. afterwords, I will use a grinder to smooth the welds down, then sandpaper , then I will primer the entire floor, followed with rustoleum paint. Is there an easier/better way?
and finally, how do I prevent rust in the future? It's leaking water, and I suspect it's coming from the windshield wiper vent.
EDIT: if I am interested in sandblasting my floor, what sort of sand/agent should I use, and how much will strip a cab floor?
what are all these panels underneath the truck in front of the floorpan, (in the area of the gas and brake petal) and how do I work around them?
Here's what I'm thinking about doing. first, I am going to sandblast the entire floor, then I'm going to lay the new floor pan down over the old one. Next I will tack weld one corner in place, and cut the old floorpan out from under it (avoiding lines, cables, and wires underneath) . once I do that, I will weld in 3-4 inch strips being careful not to overheat and warp my metal. afterwords, I will use a grinder to smooth the welds down, then sandpaper , then I will primer the entire floor, followed with rustoleum paint. Is there an easier/better way?
and finally, how do I prevent rust in the future? It's leaking water, and I suspect it's coming from the windshield wiper vent.
EDIT: if I am interested in sandblasting my floor, what sort of sand/agent should I use, and how much will strip a cab floor?
Last edited by Merkatroyd; May 22, 2010 at 01:46 PM. Reason: One last detail.
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Brazing is like welding but it is not as strong of a hold. Instead of welding rod or wire it is a brazing rod. You use a torch set with a brazing tip and heat up the rod so it melts thus creating a weld. But i dont like doing it because i think you can warp it more easily doing that then with a wire feed welder.
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From: Mississippi
If its leaking water on the floor board your cowl may need cleaning out, I know mine did. on the inside of the front wheel well, on the front cab mount, there is a rubber grommet covering a cleanout hole, if its like mine there is also a felt guard clipped in there, remove it too. Open the cab door and there is a drain hole for the cowl. Using a compressor and a blowgun to blow air through the cowl vent just behind the hood, the cleanout hole and maybe a clothshanger inserted through the cowl, you should be able to clean this area out. It took me about an hour to clean both sides.
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