Bottom of the tank was present but pretty destroyed
All this in one radiatior -Now there is a reason to keep the lid on!
Radiator neck cracks etc..
You can see that this had been resoldered at some point
Pretty rough..
Layout of new copper
Cleaning the cores with muriatic acid
Punching holes, they were center punched prior to help with alignment
After folding
Smaller cores were fit into the originals approximatly 3/4" then soldered but I forgot to take a picture prior to fitting my new piece and I wasn't going to line up 75 cores again
Don't underestimate cleaning first, and having a new contianer of flux.
If this was a pressurized system the RTV wouldn't work, but I think it will be fine.