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will JB Weld fix a radiator leak
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king cotton
Posted 10/19/2011 21:13 (#2011392)
Subject: will JB Weld fix a radiator leak


had a slow leak on the top (that is freakin plastic) of my radiator in my 1998 Mack CH613. today it developed into a good leak. the leak is right under the inlet port.called radiator shop and they said to pull radiator out and they can repair or might have to replace just the top part of radiator. i am thinking drain the radiator partly and let everything dry a little. then go to work with sand paper or a wire brush and then use JB Weld. dont know if it will be permanent but only lack 7 days of harvest.

thanks.

Edited by king cotton 10/19/2011 21:14
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postev
Posted 10/19/2011 21:39 (#2011455 - in reply to #2011392)
Subject: Re: will JB Weld fix a radiator leak


mid west mi
I have used it in the past < It will temperarily fix it. Good luck seal all over the top will help or you can get a melt stick made for air cond. lines steve

Edited by postev 10/19/2011 21:40
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twraska
Posted 10/19/2011 21:47 (#2011474 - in reply to #2011392)
Subject: RE: will JB Weld fix a radiator leak


Wallis, TX
NAPA store here sells a patch kit specially made for plastic radiators. Its got some fiberglass matt looking material for strength and the 'glue' remains soft almost rubber like.
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Balzy
Posted 10/19/2011 21:49 (#2011479 - in reply to #2011455)
Subject: Re: will JB Weld fix a radiator leak


central Iowa
My tank wasn't plastic and the product I used wasn't JB weld. Something like it, repaired upper tank probably 10 years ago. Still holding.
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Tim in WI
Posted 10/19/2011 21:49 (#2011483 - in reply to #2011392)
Subject: RE: will JB Weld fix a radiator leak



Embarrass WI

What do you have to lose?

Clean it up good, rough it up with some sandpaper, use plenty of the JB and give it at least 24 hours to cure before you try to use it. My bet would be that it works.....if it works it should hold longer than a week.

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PatCMO
Posted 10/19/2011 21:55 (#2011497 - in reply to #2011392)
Subject: RE: will JB Weld fix a radiator leak


Pilot Grove, Missouri
I tried it a couple times on plastic auto radiators. Didn't work. I think the plastic expands and contracts with heat and pressure causing it to work loose pretty quickly. Patrick
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tommyw-5088
Posted 10/19/2011 22:04 (#2011513 - in reply to #2011497)
Subject: Re: will JB Weld fix a radiator leak


south Texas , York Rife Freemason
This stuff will work if jb weld wont .

http://www.nextag.com/Norton-NOR04616-SPEED-GRIP-635214609/prices-h...
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spr352
Posted 10/19/2011 22:16 (#2011549 - in reply to #2011392)
Subject: Re: will JB Weld fix a radiator leak


ECIL
I wouldn't use JB Weld on plastic, however there are many two part epoxy products that are available, some are specifically designed to work on plastic. I have used several different epoxy adhesives over the years, and it is amazing how well some work. Just make sure it is an epoxy you have to mix together.
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bobcan
Posted 10/19/2011 22:46 (#2011634 - in reply to #2011392)
Subject: Re: will JB Weld fix a radiator leak


SK.. in Frozen Cold Western Canada
Also, might be a good idea to check and see if you are Able / it is Advisable to use a Lower Pressure Rad Cap to make it last a bit longer..
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johncase
Posted 10/19/2011 22:51 (#2011649 - in reply to #2011634)
Subject: Re: will JB Weld fix a radiator leak


southern ontario
if you do use JB weld there is some quick set available,it sets in about 15 mins
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G. DAY
Posted 10/19/2011 23:51 (#2011784 - in reply to #2011392)
Subject: RE: will JB Weld fix a radiator leak


Fresno, California
Polyurethane Construction Adhesive made by Quikrete is a good flexable adhesive for plastic PVC, available at Lowe's in a cartridge, 48 hours for a full cure.
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260david437
Posted 10/20/2011 08:17 (#2012068 - in reply to #2011392)
Subject: RE: will JB Weld fix a radiator leak


north east IN
Just take it off and get it fixed right the first time. Last year I rubbed a hole in the fuel tank on my silage truck,so how to fix?
Don,t want to take the time to fix it right so went to napa and got some stuff to fix fuel tanks. Drained tank, fixed, let dry till next day.
Worked till noon next day started to leak so drained tank put JB weld on let dry till next day. This worked the rest off silage chopping but forgot about it, well the first day this year hit the ground with tank and it started to leak so drained tank,took 10 min to take off took to welding shop and they had it fixed in 30 min took 20 min to put back on and it is fixed right, I should off done that the first time and it would off saved a lot off time and work.
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RodInNS
Posted 10/20/2011 09:09 (#2012178 - in reply to #2011392)
Subject: RE: will JB Weld fix a radiator leak


Check with your local NAPA or parts store. They have a special rad tank repair kit available... It's an epoxy I think.... just a bit different formulation for PVC tanks.
I picked one up intending to use it this spring... then discovered the tank was beyond repair anyhow...
Stuff wasn't that expensive tho.

Rod
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PorchFarms
Posted 10/20/2011 20:08 (#2012865 - in reply to #2011392)
Subject: Re: will JB Weld fix a radiator leak


west tn
I've had good luck using bondo. Just use the kind autobody shops use and pack in in real well. works excellent with any leaks in the fins also.
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