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JB Weld |
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DocCreer
AMC Addicted Joined: Oct/03/2009 Location: Portland Oregon Status: Offline Points: 1568 |
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Posted: Jul/02/2018 at 4:43pm |
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Can i used JB Weld to seal a leaky smog tube?as well as a small crack in the exhaust manifold?82 Eagle Straight Six.
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61 American
82 eagle limited |
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AMXFSTBK390
AMC Addicted Joined: Oct/22/2013 Location: SF Bay Area Status: Offline Points: 3489 |
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I have used this product. Successful results depends on location of the crack or defect and prep work.
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Questions are powerful tools...what's in your toolbox?
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partsguy
Supporter of TheAMCForum Joined: Jan/23/2016 Location: ca Status: Offline Points: 251 |
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i did that here in ca,and it failed smog do to being tamper with,the smog tube i needed there was no repop made for the old ihc,sold the truck foe parts,
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rms827
AMC Nut Joined: Apr/18/2018 Location: California Status: Offline Points: 378 |
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Gotta love the People's Republic of California. Personally I would have referee challenged that fail. It's no more a tamper than welding a crack is.
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1964 AMC Rambler Classic 660
"You can think I'm an idiot, just don't talk to me like I'm one." - Batman |
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FSJunkie
AMC Addicted Joined: Jan/09/2011 Location: Flagstaff, AZ Status: Offline Points: 4741 |
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Would probably seal until the first time you took the car on the highway. Then the heat and expansion would crack it. Get it brazed or welded.
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1955 Packard
1966 Marlin 1972 Wagoneer 1973 Ambassador 1977 Hornet 1982 Concord D/L 1984 Eagle Limited |
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billd
Moderator Group Forum Administrator Joined: Jun/27/2007 Location: Iowa Status: Offline Points: 30894 |
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Braze the smog tube. It's easy to do.
IMO, JB products are worthless - I've had the "weld" products fail more times than succeed. I know others love and swear by it, I swear at it (and yes, I do know how to use epoxies and glues and adhesives) Have a shop that knows how to weld to the manifold or find a good used one (they should be easy to find) Epoxy, eve that, won't hold up on a manifold. It's more expanding and shrinking than epoxies can handle.
A GOOD welder can weld it. Otherwise find a good used exhaust manifold - you could likely get one cheap. |
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matty 401
AMC Addicted Joined: Jul/06/2007 Location: Iowa Status: Offline Points: 1730 |
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or a new manifold
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72 matador 401 the beast
79 concord 2 door 72 matador 304 grasshopper 68 Rogue 406 93 Cherokee 4.0 5 speed |
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AMXRWB
AMC Addicted Joined: Apr/25/2013 Location: Midwest Status: Offline Points: 1136 |
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Never worked for me before.
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AMXFSTBK390
AMC Addicted Joined: Oct/22/2013 Location: SF Bay Area Status: Offline Points: 3489 |
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I have been lucky using J-B Weld for automotive applications....just gotta know the limitations. At Amazon J-B Weld Extreme Heat received 169 customer reviews and averaged 3.7 out of a possible 5 stars.....not bad considering the bad rap a lot of products at Summit Racing get.
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Questions are powerful tools...what's in your toolbox?
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g-man
AMC Addicted Joined: Jul/05/2007 Location: Cal Coast Status: Offline Points: 703 |
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Hey Doc, Why fight it bro? $120.79 sounds like a pretty decent deal to me. Yeah, a little work to change it out...but worth the peace of mind of not cracking again. g-man
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AMC only daily driver
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