Hi everyone - I'm going to repair a rust hole in the frame and wondered what the recommended method would be. I've never done this before. Pics are below (one pic shows the back side if the rail).
The outrigger on the forward side of the street wheel well was just cut out from in front of this area.
I can access the back of the rail (side with the OPEN holes) to insert a piece of flat bar to back the welding repair but I don't really have enough access through the holes to weld it from that side. It looks like a run of conduit is going through there and prevents any hope of access.
So my thinking is to drill some holes in the frame and then I will weld through along with a lot of welding and filling in the actual rust hole.
Is this a good strategy? Should I drill a lot of holes or just a few? Big or small holes? Should I cut the rusted out section back a lot, maybe even to straight edges, or just grind back the damaged area as best I can?
Finally, is there much I can do to repair and protect the areas not directly seen from further deterioration other than ospho or por15? I'm not sure if the area between all these plates joining is rusting as well. Guess it doesn't matter to much as I can't access it any way I can think of to grind and brush stuff out.