Quote:
Originally Posted by jhowes
Brent; I noticed that you did not address the type of solder and flux. I have been told that rosin flux/core solder is only good for water pipes and electrical connections and acid flux must be used in this application. Jack
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I've done a few radiator repairs and tank strap soldering jobs. I never had good luck with acid flux or acid core solder. I always use rosin core solder and rosin flux, and it works great.
I usually find the reason for the strap coming loose in the first place was because it never had full contact solder in the first place. Clean the entire surface on the tank area and strap area to receive solder, then tin both areas, then pull the strap to the tank and melt the solder. Add a bit more solder if needed.