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Fixing an aluminum radiator, where find low heat welding rod #3061095
07/20/22 08:01 PM
07/20/22 08:01 PM
Joined: Jan 2003
Posts: 20,624
San Jose,CA
migsBIG Offline OP
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So I have an aluminum race radiator that is in great condition, but somehow got nicked and sprinkle a very small leak in one of the tubes. I think I can fix it with sold aluminum low heat welding rod that melts with a torch. Any sources out there that are good quality? Not sure what is a good and what is crap. We had some we used on transmission cases and work great, but ran out and the source we used has been long closed now.

Re: Fixing an aluminum radiator, where to find low heat welding [Re: migsBIG] #3061096
07/20/22 08:03 PM
07/20/22 08:03 PM
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NITROUSN Offline
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You should be able to solder it.

Re: Fixing an aluminum radiator, where to find low heat welding [Re: NITROUSN] #3061097
07/20/22 08:09 PM
07/20/22 08:09 PM
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Posts: 20,624
San Jose,CA
migsBIG Offline OP
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Originally Posted by NITROUSN
You should be able to solder it.
. Would rather use the rod to solder it as I don’t have a soldering gun or equipment. Plus I’d like to have some for future repairs and last minute repairs.

Re: Fixing an aluminum radiator, where to find low heat welding [Re: migsBIG] #3061111
07/20/22 08:30 PM
07/20/22 08:30 PM
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NITROUSN Offline
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Most repairs can be done with a simple propane torch.

Re: Fixing an aluminum radiator, where to find low heat welding [Re: NITROUSN] #3061114
07/20/22 08:46 PM
07/20/22 08:46 PM
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BloFish Offline
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iagree


It really doesn't matter whether you win or lose…
as long as you look good doing it!

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Re: Fixing an aluminum radiator, where to find low heat welding [Re: BloFish] #3061118
07/20/22 08:57 PM
07/20/22 08:57 PM
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Omaha Ne
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TJP Offline
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might check these guys, their pot metal repair works great LINKY

Re: Fixing an aluminum radiator, where to find low heat welding [Re: TJP] #3061124
07/20/22 09:05 PM
07/20/22 09:05 PM
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San Jose,CA
migsBIG Offline OP
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Need one that does not use flux. Melt directly to surface and it binds to it. Similar to this:


https://toinspiration.com/products/welding-wire

Re: Fixing an aluminum radiator, where to find low heat welding [Re: migsBIG] #3061133
07/20/22 09:16 PM
07/20/22 09:16 PM
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Without seeing what you have its hard to say what exactly you are fixing. But if it is what I think I could have it repaired in minutes.

Re: Fixing an aluminum radiator, where find low heat welding rod [Re: migsBIG] #3061155
07/21/22 12:13 AM
07/21/22 12:13 AM
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USA
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Grizzly69 Offline
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Re: Fixing an aluminum radiator, where find low heat welding rod [Re: Grizzly69] #3061275
07/21/22 10:06 AM
07/21/22 10:06 AM
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San Jose,CA
migsBIG Offline OP
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I found this on Youtube where the test a bunch of no weld welding rods. Pretty interesting results.



Last edited by migsBIG; 07/21/22 10:06 AM.
Re: Fixing an aluminum radiator, where find low heat welding rod [Re: migsBIG] #3061459
07/21/22 04:31 PM
07/21/22 04:31 PM
Joined: Aug 2011
Posts: 2,634
Pattison Texas
csk Offline
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Pattison Texas
Just put some epoxy into the broken tube & then crimp it over, one tube wont affect its cooling ability


1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
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Re: Fixing an aluminum radiator, where find low heat welding rod [Re: csk] #3061558
07/22/22 07:03 AM
07/22/22 07:03 AM
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new berlin wisconsin
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Mr T2U Offline
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Last edited by Mr T2U; 07/22/22 07:03 AM.

perception is 90% of reality
Re: Fixing an aluminum radiator, where find low heat welding rod [Re: Mr T2U] #3061570
07/22/22 08:36 AM
07/22/22 08:36 AM
Joined: May 2019
Posts: 515
Lake Villa Il
INTMD8 Offline
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Lake Villa Il
Not sure if it's an option for you but I've tig welded damaged cores many times, no problem.


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