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Country Discussion Topics
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Radiator repair
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Kokanee    Posted 08-11-2003 at 12:24:21       [Reply]  [No Email]
Hi all! I have a 4 core radiator that needs a hole soldered.The leak is coming from the top pipe from what I can tell.Its still in the truck.
My question is whats the best way to solder this.I,ve never did a rad yet but am familar with soldering copper.Sort of.
Need I just solder the hole or cut the hole out then solder both ends of the pipe.Do I need to crimp the pipe or bend it over then solder.
I,m a long drive from any sort of repair shop.81 Suburan.
Thanks if you can help me out.
The solder I bought is 30% tin 70% lead Acid core.
Do I still need to use flux??
You would not believe the price of a new 4 core radiator.



Sometimes.....    Posted 08-11-2003 at 13:10:15       [Reply]  [No Email]
putting heat on a rad that old creates more problems than fixes....I would go with JB Weld also...stuff works great....


Salmoneye    Posted 08-11-2003 at 12:31:51       [Reply]  [No Email]
Depends if this is on a seam...

If the hole is on a seam, the problem you are going to have is keeping the solder from dripping out of the seam while you attempt to fill the existing hole...You may just cause more of a problem than you have already...If it is not a seam, you should be fine soldering with some flux after cleaning the area well...

I hate to add this, but...I have a radiator going right now and has been for 3 years...Fixed a seam with...You guessed it...

JB Weld...It is rated for 400 degrees and radiators never get that hot...

:-)


Capp    Posted 08-11-2003 at 14:07:38       [Reply]  [Send Email]
You can take the radiator out and clean it good. If you have some muratic acid to pour on it, and a good pressure water hose, be careful and don't spray the fins with to much pressure for they will bend over and stop the air from cooling the radiator Then if you could somehow put just a few pounds of air pressure on it and dip it in water or take a spray bottle with dawn dishwashing liquid in it you can find the hole. If it's on the top like you think you can take a pair of side cutters and cut it and solder it to the header, be sure you solder the tube on the top of the header and follow it down to the bottom header and do the same to it. You say it's a 4 tube radiator so 1 tube soldered up shouldn't hurt the cooling any. If it's on the top like you say then you will need to turn it over so the solder won't run off. Be sure you clean it good and use lots of flux. If your radiator is rotten then the best thing you can do is get another one. Hope this helps.
Capp


Kokanee    Posted 08-11-2003 at 17:55:45       [Reply]  [No Email]
Thanks so much. Got it soldered & so far looks good.!I really really appreciate the help.


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