1 cut the sheet metal to size.
Estimate to weld in new floor pans.
I have seen this part of the job skipped and the new pans installed right over the leftover scrap.
Rather than duplicate the factory spot welds many restorers prefer to run a complete bead around the new panel.
The common repair method is to trim the old and new create a stepped flange around the perimeter of the replacement panel and install it with a lap weld because butt welding is difficult.
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White s advice is to replace a rusty floor pan as soon as possible to avoid additional problems.
I am currently in the middle of cutting out rust from a car floor pan and will need to know soon whether i can do spot welds or do i have to run a bead.
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We go back over the lip with a grinder to make for a nice flat surface to set the new pans on.
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Removing it makes for a much neater job.
A continuous weld is unnecessary and more likely to crack later on.
Trace around the framerails with a marker and remove the floor.
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3 drill holes through the new floor pan every 1 around the perimeter.
Your car s original floor pans were spot welded in because it was the most cost effective cheapest way to do thousands of vehicles.
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Slide the new floor under the car and lift it into place.
Start to finish it s roughly an 8 hour job and can be easily broken up over a two day weekend with a mig welder and a plasma cutter.
2 shape it to the original floor pan.
Unfortunately for the cars salt is a leading factor for rust in floor pans and other bodywork.
You may need to adjust the seat pan tabs on the sides of the floor.