I’ve used a large copper soldering iron as Kevin has suggested that you heat with a torch away from the tank, to solder pinholes in a tank with successful results. Your going to have to remove the flange, clean both surfaces to get a successful bond, then re-solder into place which is going to take allot of heat to get a good bond, so can’t say that iron will produce be enough heat to be successful.
If it was me, I would bring it to a radiator shop and see if they would be able do it. If not, I would buy a new tank. Theys are not that expensive.
Last edited by Phak1; 03/04/2023 12:47 PM.
