spot weld or full weld?

I would think full weld to help water proof it and to make it stronger. But don't weld it all in one go, tack weld it in place and then keep working around with more tacs in the gaps until the hole thong is welded up.
I'm not a panel beater or veteran of body work.

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Respect mine and I'll respect yours.

If these are the replacement floor pan sections, then they need to be fully welded. As Kenno says ^ tack it in lots of places before welding, do short runs and planish each run as you do them.

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If replacing whole floor pan - spot the edges where theey join the wheel arch or the inner sill/lower door section. But weld it where it meets the tunnel or the rear floor pan

If sections of floor pan, Weld the whole section round (i go top and bottom)

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ok thanks should be alright to leave the floor pan bigger than the hole by half inch all around?

Thats correct... if you're oxy welding.

I'f you're using MIG, you don't usually need to.

Do one run, have a look, if it appears to be distorting then you may need to adjust your settings.

Isn't as easy to plannish, or hand form anything thats been MIG welded because the weld is harder than the parent matterial.

Is there any other way?

And, no, that is not a question.

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Absolutely.

When you're doing floor repairs, you're meant to overlap the new section, in such a way that the replacement section is sitting on top of the exisitng floor. Half an inch will be fine......

It probably goes without saying... but just incase, remember that there is a fuel line that runs down one side, and a battery cable and brake line that runs up the other...... we'd like to see you come back if you catch my drift

Hi Dale 62,

As above as per all other comments.

I also like to run a dual layer over lap, full weld on bottom side and seal the seams after grinding and etch primer. I fully weld some of the inside seam and stitch weld other areas, using seam sealer or equivalent inside also.





Note: When grinding welds back don't go so far that you grind all the weld off. Leave 1.5 - 2mm of butt weld (technically a 1mm fillet weld I guess) left for strength.

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