Best Ways to fix Firewall Holes?

Hi All,

Time to address my Firewall and the existing holes that need to be repaired.
The 2 pics below show what I need to do. Mine, with all the holes and the other, repaired and painted. So, I'm looking for the best and/or creative solutions.
My thoughts were to Mig weld the small holes while backing them up with a piece of copper. Making a few patches for the couple of larger holes, then Mig. Any other ideas would be appreciated.

Murph

 

You have the right idea, I just prefer to tig weld the patches in and then hammer the weld, it grinds off nice and flush. good luck

 

That's how I did mine....all 86 of them!

 

to a fellow Marylander, cut patches, weld, grind...repeat

 

Doesn't Bob Drake sell a assortment pack of round metal discs for patching holes? I thought I saw them on his site.

 

I don't own a TIG, so I MIG welded all mine in. Used the copper or aaluminum backer for the 1/4" and smaller holes, and fillers for larger.

 

I'd do the same using oxy-acet. use steel wire and needs almost no filling.
Grinds back easily too.

 

Knock-outs from old electrical boxes

 

now is a good time to weld some studs to the inside of the firewall to mount stuff like AC and a fuse panel , etc.

 

I use nails ,gives you a handle to position it then grind em off

 

Move around a lot and keep the heat down.

 

Me too. Grinding sucks!

 

Back in the days when chrome was cheap, I made a piece of 16ga. the shape or the firewall and had it chromed.

 

What a great idea.