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brazing rod or silver solder for radiator repair #1641976
07/04/14 04:20 PM
07/04/14 04:20 PM
Joined: Feb 2004
Posts: 1,012
indiana
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mcmopars Offline OP
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indiana
the 61 is leaking around the filler neck.i was going to use silver solder around it to repair.

Last edited by mcmopars; 07/04/14 04:25 PM.
Re: brazing rod or silver solder for radiator repair [Re: mcmopars] #1641977
07/04/14 05:51 PM
07/04/14 05:51 PM
Joined: Jan 2003
Posts: 6,363
Abilene, Texas
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Abilene, Texas
Silver solder and brass take too much heat to melt for the thin brass rad. The rad shops just use 50/50 lead solder. Use good flux.

Re: brazing rod or silver solder for radiator repair [Re: mcmopars] #1641978
07/04/14 05:53 PM
07/04/14 05:53 PM
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert Offline
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Lincoln Nebraska
I remember hanging around a radiator repair shop when I was 12 & he was always using a roll of solder and an oxy/acet torch. Not sure what % but I'm sure it was not silver solder & I'd think SS would not be strong enough for that but I am WAG. Last year I did have a bung installed in a new gas tank & everyone said to weld it that solder would not be strong enough but the shop insisted otherwise so I went with their thoughts on that & it was rock solid/no leaks. I would say either 60/40 or 70/30 (not sure which) acid core flux solder Oh & now I remember as I type this that he was always brushing on something with a mini brush with a chrome handle what I now assume was flux to clean the joints. He'd heat the joint then brush the stuff on then blow it off with shop air & use a wire brush before or after & this'd expose the crack then he'd solder it with the roll of solder in hand & torch then dunk it in the water tank & pressure check it for bubbles


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Re: brazing rod or silver solder for radiator repair [Re: mcmopars] #1641979
07/04/14 05:54 PM
07/04/14 05:54 PM
Joined: Dec 2007
Posts: 18,153
Mass
DAYCLONA Offline
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Mass
Your better off using 50/50 solder as it flows better on brass, the "silverbrite or "silver solder" is junk, it'll soon fester with oxidation

and a brazing rod or "silver braze"(not to be confused with solder) is just too high a melting point,..... silver solder has a 450+ degree eutectic, where as 50/50 has a 360+ degree eutectic point

Re: brazing rod or silver solder for radiator repair [Re: DAYCLONA] #1641980
07/05/14 12:11 PM
07/05/14 12:11 PM
Joined: Feb 2004
Posts: 1,012
indiana
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mcmopars Offline OP
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indiana
thanks,50/50 it will be







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