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removing jb weld from radiator #592483 Sat Nov 14 2009 09:04 PM
Joined: Mar 2009
Posts: 124
M
monkey wrench Offline OP
Wrench Fetcher
hi,

i have a radiator that i would like to limp along for a few more months. the po sealed up a leak where the upper tank meets the core with jb weld. it leaks now and i'd like to remove the jb weld and braze the leak shut. there is a seam of jb weld about 4" long that i dont know how to remove. any suggestions on how to remove it?

Re: removing jb weld from radiator [Re: monkey wrench] #592485 Sat Nov 14 2009 09:08 PM
Joined: Mar 2009
Posts: 124
M
monkey wrench Offline OP
Wrench Fetcher
i guess i should google before i post. it says on the jb weld website it can only be removed by grinding or filling or heating above 600 degrees. that sounds like an awfull mess. maybe adding more jb will get me by for awhile.

Re: removing jb weld from radiator [Re: monkey wrench] #592517 Sun Nov 15 2009 12:07 AM
Joined: Apr 2002
Posts: 31
K
KevinW Offline
Wrench Fetcher
Use a dremel with a carbide reamer bit. Cuts through JB very well.


51 Chevy 3100 Jigsaw puzzle
69 Camaro SS350 convertible
69 Camaro 327 convertible
Re: removing jb weld from radiator [Re: KevinW] #592518 Sun Nov 15 2009 12:11 AM
Joined: Aug 2007
Posts: 1,891
S
Scott Danforth Offline
Shop Shark
small pencil torch and a pick


The problems we face today can not be addressed at the same level of intelligence we were at when we created them - Albert Einstein Or with the same level of $ - Me
Re: removing jb weld from radiator [Re: Scott Danforth] #592573 Sun Nov 15 2009 02:56 AM
Joined: Mar 2009
Posts: 124
M
monkey wrench Offline OP
Wrench Fetcher
i have both a small torch for my o/a set-up and a dremel. i'll try a combination of both. thanks.

Re: removing jb weld from radiator [Re: monkey wrench] #592605 Sun Nov 15 2009 04:36 AM
Joined: Apr 2009
Posts: 435
R
rednate Offline
Shop Shark
carefull with that torch eugene, or you'll melt a whole lotta solder joints that you really don't want to

Re: removing jb weld from radiator [Re: monkey wrench] #592606 Sun Nov 15 2009 04:38 AM
Joined: May 2009
Posts: 99
6
65 WonTon Offline
Wrench Fetcher
JB Weld is a form of epoxy and softens/melts with heat. Ditto Scott above. If you can get to it afterward, use a twisted wire wheel to clean up before brazing. Epoxy can also be cleaned, while in soft/liquid state, with acetone or white vinegar so maybe while still warm, after removal of the majority, wipe it down with one of those.


Dave.

What's the last thing a red neck says, "Hey guys watch this."
What's the last thing a redneck hears, "Go ahead Bubba, you can do it."

Build plan: 65 Chevy one ton, 5.9L Cummins HO, NV5600 six speed, 2wd 1972-1987 IFS disk front, frame off restore/mod, custom dump/flat bed, Alcoa rims, Dana 70 3.73:1 duals drum rear, plush interior, Guards red with Marine Corps decals. Donor is retired 2002 Ram 2500, 194K miles.
Re: removing jb weld from radiator [Re: 65 WonTon] #594808 Mon Nov 23 2009 04:06 AM
Joined: Mar 2009
Posts: 124
M
monkey wrench Offline OP
Wrench Fetcher
thanks for the suggestions. i used the torch to get the majority of it off and then the carbide dremel bit to get inbetween the fins. both worked well.

i'll try some acetone or vinigar to prep before brazing.


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