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Fixing an aluminum radiator, where find low heat welding rod #3061095
07/20/22 09:01 PM
07/20/22 09:01 PM
Joined: Jan 2003
Posts: 21,599
San Jose,CA
migsBIG Offline OP
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migsBIG  Offline OP
YouTube is my go-to news source

Joined: Jan 2003
Posts: 21,599
San Jose,CA
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 09:03 PM
07/20/22 09:03 PM
Joined: Jan 2003
Posts: 18,389
UPPER MICHIGAN, MARQUETTE COUN...
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NITROUSN Offline
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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 09:09 PM
07/20/22 09:09 PM
Joined: Jan 2003
Posts: 21,599
San Jose,CA
migsBIG Offline OP
YouTube is my go-to news source
migsBIG  Offline OP
YouTube is my go-to news source

Joined: Jan 2003
Posts: 21,599
San Jose,CA
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 09:30 PM
07/20/22 09:30 PM
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Posts: 18,389
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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 09:46 PM
07/20/22 09:46 PM
Joined: Nov 2004
Posts: 16,449
On the run…
BloFish Offline
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On the run…
iagree


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Re: Fixing an aluminum radiator, where to find low heat welding [Re: BloFish] #3061118
07/20/22 09:57 PM
07/20/22 09:57 PM
Joined: Jan 2003
Posts: 15,193
Omaha Ne
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TJP Offline
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Omaha Ne
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 10:05 PM
07/20/22 10:05 PM
Joined: Jan 2003
Posts: 21,599
San Jose,CA
migsBIG Offline OP
YouTube is my go-to news source
migsBIG  Offline OP
YouTube is my go-to news source

Joined: Jan 2003
Posts: 21,599
San Jose,CA
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 10:16 PM
07/20/22 10:16 PM
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NITROUSN Offline
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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 01:13 AM
07/21/22 01:13 AM
Joined: Nov 2005
Posts: 236
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 11:06 AM
07/21/22 11:06 AM
Joined: Jan 2003
Posts: 21,599
San Jose,CA
migsBIG Offline OP
YouTube is my go-to news source
migsBIG  Offline OP
YouTube is my go-to news source

Joined: Jan 2003
Posts: 21,599
San Jose,CA
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 11:06 AM.
Re: Fixing an aluminum radiator, where find low heat welding rod [Re: migsBIG] #3061459
07/21/22 05:31 PM
07/21/22 05:31 PM
Joined: Aug 2011
Posts: 2,842
Pattison Texas
CSK Offline
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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
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Re: Fixing an aluminum radiator, where find low heat welding rod [Re: CSK] #3061558
07/22/22 08:03 AM
07/22/22 08:03 AM
Joined: Apr 2005
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new berlin wisconsin
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Mr T2U Offline
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new berlin wisconsin

Last edited by Mr T2U; 07/22/22 08:03 AM.

perception is 90% of reality
Re: Fixing an aluminum radiator, where find low heat welding rod [Re: Mr T2U] #3061570
07/22/22 09:36 AM
07/22/22 09:36 AM
Joined: May 2019
Posts: 702
Lake Villa Il
INTMD8 Offline
super stock
INTMD8  Offline
super stock

Joined: May 2019
Posts: 702
Lake Villa Il
Not sure if it's an option for you but I've tig welded damaged cores many times, no problem.


69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700






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