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Solderring radiator fitting

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Dave

01-09-2000 10:25:53




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I am told that one can solder a radiator at the fitting where the hose clamps onto the rad. I have tried this before without any luck. Could it be the type of solder, flux, heat or some combination that makes the difference? Does anyone have any hints?




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Mark's Radiator Electric

01-11-2000 18:09:39




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 Re: solderring radiator fitting in reply to Dave, 01-09-2000 10:25:53  
Dave, the best way to do it is use quick tin powder mixed with acid flux, heat the metal and brush the mixture with a special application brush
wich will tin the copper immediately, being carefull not to apply to much heat, after the metal is tinned use solid core solder, these things you should be able to pick up at local radiator shop if not you can contact me [email protected] or call 765-448-1392 and I will supply you with..Mark

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Fred Martin

01-10-2000 09:09:58




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 Re: solderring radiator fitting in reply to Dave, 01-09-2000 10:25:53  
And another thing... What is this thing we call acid core or flux? If you look on the container it says "contains zinc chloride" Read years ago that if you take muratic acid (in suitable container) and add zinc shavings till it won't absorb anymore, you got it. Probably add bees wax or something to make it less viscuous (runny) like Ruby Fluid. As Vic S says "class dismissed".
P.S. Saw a radiator neck that had been epoxied and it held for years. Guys are right on cleanliness is next to Godliness on soldering. I'd use propane torch, take out radiator and position to advantage, stay out of wind and use extra flux. Brass will take solder real easy when heat is right. Too much heat and it will run thin. Fred from the Mung Factory

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Steve U.S. Alloys

01-10-2000 11:21:36




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 Re: Re: solderring radiator fitting in reply to Fred Martin, 01-10-2000 09:09:58  
Here is the chemistry for one type of acid solder flux. It's type N3. 40 parts zinc chloride, 6 parts hydrochloric acid, 10 parts ammonium chloride, balance water. Many fluxes are proprietary and chemistries are hard to get.



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Steve U.S. Alloys

01-10-2000 07:11:52




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 Re: solderring radiator fitting in reply to Dave, 01-09-2000 10:25:53  
Hello Dave,
If your radiator is copper, I recommend a 50/50 acid core solder. Ours is # 1218AC. If you prefer 60/40 it would be our #1219. The #1219 is a solid wire and so #1219 flux must be purchased separately.

To prep, sand the area to be joined and tin both surfaces.

When applying the solder, let the metal melt the solder. Don't melt the solder with the flame.

Of course you don't have to use my material. If you are interested you may obtain pricing at 1-800-325-1568. Ask for Sharron or Cathy.

If I can answer any more questions I would be happy to.
Steve

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clooney

01-09-2000 10:52:20




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 Re: solderring radiator fitting in reply to Dave, 01-09-2000 10:25:53  
I'm assuming a copper radiator(won't work on plactic---Remove coolant. Clean the area REAL GOOD (USE A SMALL WIRE BRUSH & A SCOTCH BRITE PAD)then use a propane torch & ACID CORE solder, try not to use too much heat. Use older solder if possible (it has more lead in it)The new safe solder isn't as easy to use.



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catblaster

01-09-2000 15:57:20




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 Re: Re: solderring radiator fitting in reply to clooney , 01-09-2000 10:52:20  
Like everyone else said...very clean. The solder you are looking for is 50/50 or if you can still find it 40/60. It melts at a lower temp and doesn't run out of the joint as bad as the new "lead free" solders or 95/5. Also body solder works well, I think it may be 40/60.



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Tom S.

01-10-2000 05:57:28




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 Re: Re: Re: solderring radiator fitting in reply to catblaster, 01-09-2000 15:57:20  
Will the solder like you use on body seams work on radiators? Do you buy it at a regular body shop supply house? Only solder I have gotten any more is junk. Maybe this is what I need. Tom S.



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catblaster

01-10-2000 18:53:53




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 Re: Re: Re: Re: solderring radiator fitting in reply to Tom S., 01-10-2000 05:57:28  
Tom, to be honest I have never used it on anything except bodywork but it seems to have a lower melting temp than 50/50 and has a high viscosity when melted. There is a word for that property but it escapes me. For my money I would use 50/50, easier to get and predictable, at least for me.



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Tom S.

01-11-2000 06:27:19




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 Re: Re: Re: Re: Re: solderring radiator fitting in reply to catblaster, 01-10-2000 18:53:53  
OK. I am always looking for things to make repairs easier. Tom S.



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Tom S.

01-09-2000 13:45:05




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 Re: Re: solderring radiator fitting in reply to clooney , 01-09-2000 10:52:20  
Use a little flux or acid to clean with also. Like the fellow said clean 'REAL GOOD'. Tom S.



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And another thing.......

01-09-2000 14:41:46




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 Re: Re: Re: solderring radiator fitting in reply to Tom S., 01-09-2000 13:45:05  
(assuming a BRASS radiator), don't forget to 'tin' each side of the joint before attempting a connection (the tank side would reach heat prior to the fitting side if the joints were not prepared). I personally perfer to use one of those BIG old 'candle stick' soldering irons for this type work....I can't seem to get the heat down enough with propane. And remember, like in painting, preparation, preparation, preparation. Eddie Petty

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