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Old 08-26-2019, 05:54 AM   #1
Chuck Kuntz
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Default Is There Any Epoxy That Will Stick To Brass???

I need to repair a small dent in a radiator top tank neck where the cap seats. It is leaking there and I added a recovery tank that will not return the excess coolant due to this dent. Will JB Weld or some other product stick to the brass so I can flat file the repair? This is a 1935 pickup so the cap does not have the typical gasket.
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Old 08-26-2019, 05:56 AM   #2
skidmarks
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Default Re: Is There Any Epoxy That Will Stick To Brass???

Solder and file it off
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Old 08-26-2019, 06:49 AM   #3
Chuck Kuntz
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Default Re: Is There Any Epoxy That Will Stick To Brass???

I can't do that with the radiator installed in the pickup. I was hoping for an easier solution.
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Old 08-26-2019, 06:59 AM   #4
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Default Re: Is There Any Epoxy That Will Stick To Brass???

Do you have a junk radiator or something else that’s made of brass that you can try it on? I can’t imagine J-B Weld not sticking to brass......Mark
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Old 08-26-2019, 07:06 AM   #5
flatheadmurre
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Default Re: Is There Any Epoxy That Will Stick To Brass???

Any metal that oxidize is sensitive to time between tht you clean the surface with an abrasive and aplying the glue...
The faster you are the better chance to make it stick.
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Old 08-26-2019, 07:16 AM   #6
Kurt in NJ
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Default Re: Is There Any Epoxy That Will Stick To Brass???

I have a " marine Tex" epoxied repair on radiator tubes that has held for 30+ years, it cures slow, and is machinable
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Old 08-26-2019, 08:06 AM   #7
big job
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Default Re: Is There Any Epoxy That Will Stick To Brass???

Three yrs ago nice hot day for a beer run in my 1923 Ford, almost there, on these
the drain tube is on the bottom of the tank. Well this tube came undone from the
bottom of the radiator and the fan grabbed it and yanked it out. Now stuck. so I called
the wife for water. I carry wooden matches to light my cowl lights. I broke some matches up and shoved them in the tube holes. By then she showed up filled up with water and
like a wooden boat they swelled up. Made my trip. made short took radiator out tried to
soldering, no luck no room so hardward store 5 min. epoxie. 3 yrs no leaks......
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Old 08-26-2019, 08:33 AM   #8
RKS.PA
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Default Re: Is There Any Epoxy That Will Stick To Brass???

Quote:
Originally Posted by big job View Post
Three yrs ago nice hot day for a beer run in my 1923 Ford, almost there, on these
the drain tube is on the bottom of the tank. Well this tube came undone from the
bottom of the radiator and the fan grabbed it and yanked it out. Now stuck. so I called
the wife for water. I carry wooden matches to light my cowl lights. I broke some matches up and shoved them in the tube holes. By then she showed up filled up with water and
like a wooden boat they swelled up. Made my trip. made short took radiator out tried to
soldering, no luck no room so hardward store 5 min. epoxie. 3 yrs no leaks......

Big Job, your "secret weapon" like mine is "called wife for......what's needed now!"
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Old 08-26-2019, 10:05 AM   #9
Tim Ayers
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Default Re: Is There Any Epoxy That Will Stick To Brass???

I've just used a two part epoxy product called 1212 made by Belzona. It's not cheap, $150 for 450g, but used it to repair a rot hole in a water jacket on a machined block.

So far so good. The reason we chose it was it able to be used on surfaces that are contaminated.
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Old 08-26-2019, 10:13 AM   #10
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Default Re: Is There Any Epoxy That Will Stick To Brass???

I patched a dent/crack in the top tank of my International truck last year with JBweld. It stuck fine but not sure if I got perfect coverage as I still slight dampness around the patch.
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Old 08-26-2019, 10:59 AM   #11
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Default Re: Is There Any Epoxy That Will Stick To Brass???

Check this Hudson from H.A.M.B.

Hold on, trying to attach picture of top tank repair with JB weld. Until I get it right, should also mention, JB makes a product in a stick, called Wet Weld.Screenshot 2019-08-26 at 11.49.14 AM.jpg
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Last edited by A bones; 08-26-2019 at 11:07 AM. Reason: failed attachment
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Old 08-26-2019, 01:56 PM   #12
tiger.1000
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Default Re: Is There Any Epoxy That Will Stick To Brass???

I soldered this brass union in to the top tank of my radiator whilst in situ?


Can you load a photo of your proposed repair ?
Attached Images
File Type: jpg SIGHT GLASS 005.JPG (90.8 KB, 69 views)
File Type: jpg SIGHT GLASS 004.JPG (120.8 KB, 64 views)
File Type: jpg SIGHT GLASS 003.JPG (126.7 KB, 67 views)
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Old 08-26-2019, 10:51 PM   #13
Lawson Cox
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Default Re: Is There Any Epoxy That Will Stick To Brass???

How are things in situ nowadays ?
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Old 08-27-2019, 12:58 AM   #14
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Default Re: Is There Any Epoxy That Will Stick To Brass???

I had a 59 block that I pressure tested,
It was leaking from the pan rail in the left rear, I picked at it and it was a sure enough rust hole about 1/2” diameter. I drilled it out to 3/8 pipe size, tapped it and JB welded a brass plug in it.
Filed it flat for the pan gasket and it’s still going strong today, no leaks.
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Old 08-27-2019, 02:25 AM   #15
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Default Re: Is There Any Epoxy That Will Stick To Brass???

I don't understand. If you think you can use a filler of some kind to fill the dent and then flat file the repair with the radiator installed in the pickup, why can't you do the same with solder? As 'skidmarks' implied above, solder would be the best repair. I think solder would be easier to file as well. Show us some pictures....
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Old 08-27-2019, 04:24 AM   #16
tiger.1000
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Default Re: Is There Any Epoxy That Will Stick To Brass???

Pete....Chuck is reluctant to solder in situ for fear of causing a fire or scorching adjoining areas...pic please Chuck !
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Old 08-27-2019, 05:52 AM   #17
Chuck Kuntz
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Default Re: Is There Any Epoxy That Will Stick To Brass???

I have now made the repair with JB Weld and will try to file it this afternoon. I never did figure out how to post photos on the site. The radiator shell is almost touching the neck so I can not use heat there.
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Old 08-27-2019, 08:25 AM   #18
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Default Re: Is There Any Epoxy That Will Stick To Brass???

If you want any photos posted you can email them to me to post.
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Old 08-27-2019, 01:04 PM   #19
petehoovie
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Default Re: Is There Any Epoxy That Will Stick To Brass???

Quote:
Originally Posted by tiger.1000 View Post
Pete....Chuck is reluctant to solder in situ for fear of causing a fire or scorching adjoining areas...pic please Chuck !

It was my thought that he would use a heavy duty soldering iron as opposed to a torch....
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Old 08-28-2019, 03:29 PM   #20
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Default Re: Is There Any Epoxy That Will Stick To Brass???

Loctite EA-120HP HYSOL part no. 29353
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