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#1068291 - 10/17/20 02:46 PM Radiator Repair?  
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Keithss Offline
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Keithss  Offline
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Jackson,mi
Can an aluminum radiator be repaired?
It has a leak in the very corner. I can not see the leak, but under pressure I can see the fluid coming out.
Keith

#1068303 - 10/18/20 04:02 AM Re: Radiator Repair? [Re: Keithss]  
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86ttop Offline
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86ttop  Offline
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Brooksville, Fl
Most likely not, they usually leak where they are squeezed together. it's like a foam gasket!!


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#1068304 - 10/18/20 05:20 AM Re: Radiator Repair? [Re: Keithss]  
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jmireles Offline
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jmireles  Offline
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El Paso, Tx
Just out of curiosity, if the radiator is aluminum, why can't it be repaired?


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#1068306 - 10/18/20 11:59 AM Re: Radiator Repair? [Re: Keithss]  
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88ssBrent Offline
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88ssBrent  Offline
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Friendsville,Tn
Originally Posted by Keithss
Can an aluminum radiator be repaired?
It has a leak in the very corner. I can not see the leak, but under pressure I can see the fluid coming out.
Keith

Depending on what type of radiator sometimes they can be repaired. There is a guy about 20 minutes from me that does radiator repair. The problem is both times I've called him to check on a price its not to far off a new radiator and he is always about a month behind. He pretty much does stuff where you want to keep the original or rare stuff.

#1068338 - 10/21/20 09:25 PM Re: Radiator Repair? [Re: Keithss]  
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Hunter79764 Offline
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Grand Prairie, Tx
The aluminum is very thin and hard to weld. Sometimes it is also a grade of aluminum that isn't great to weld on, making it even harder to do. As a result, the only guys willing to do it are experts with a ton of experience, and as such, it's usually cheaper and definitely easier to just get a new unit and be done. Like Brent said, most repairs like that are on antiques or aircraft which have astronomical prices for new parts.
If you are into DIY, you can try to braze/solder it up yourself, but don't hold your hopes too high. And that is basically only if the leak is somewhere accessible.

Interesting note, one approved aircraft repair method is to immerse the unit in a thermally conductive epoxy, then pull a slight vacuum on it. It sucks in some epoxy, then when it cures the leak is plugged inside and out. I believe they use a similar concept in manufacturing them, but they pull the vacuum constant on the hot unit, and then melt the filler material on the joints with a second heat source, letting it pull all the way in. Neat stuff.


Shawn

'85 MC with budget 5.3L swap, TH350 with stock 2.14 rear end
It ain't much off the line, but it's nice on the highway
#1068340 - 10/21/20 11:48 PM Re: Radiator Repair? [Re: Keithss]  
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MattsMonte Offline
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MattsMonte  Offline
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Johnston, Iowa
I agree with the other comments. There used to be a bunch of radiator repair shops in Des Moines. We are down to one at this point. Cost of repair vs buy new is not worth it. As the older guys retired, no one wanted to keep the business going.


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