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Aluminum Radiator Leak

 
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DBunch
150 series


Joined: 30 Nov 2006
Posts: 19

PostPosted: Tue Jan 29, 2013 4:01 pm    Post subject: Aluminum Radiator Leak Reply with quote

The new radiator I got from Danchuk has a "factory" hole on the back left side, lower tank, of which they supplied a threaded plug to close it off. It's not for the transmission line. I installed the plug but when the radiator gets hot it starts to leak at the plug. I was told to and tried weatherstrip sealant but it still leaks. Does anyone have an idea of what to coat the threads with to stop it from leaking?

Dan
972 270-0461
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acardon
Bel Air


Joined: 12 Jul 2005
Posts: 273
Location: Southlake, Tx.

PostPosted: Tue Jan 29, 2013 4:07 pm    Post subject: Reply with quote

I assume the hole is a 1/4 pipe thread. Probably for a radiator temp sensor. Is the plug steel or brass/copper. If it's steel, see if you can find a brass or copper plug at Home Depot or Ace hardware. A softer metal will seal better. I would think any high temp silicon sealer would work.
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DBunch
150 series


Joined: 30 Nov 2006
Posts: 19

PostPosted: Mon Feb 04, 2013 2:59 pm    Post subject: Reply with quote

Update: Radiator going back to Danchuk. Still leaked no matter what plug or sealant I used. Thanks to those who responded with ideas.
Lets hope the replacement from Danchuk, when I get it, works out better.
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