JB Weld

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   OK, to be fair and prove myself right - ..... or wrong....... I went to the 258 that I took out of my SX4 several years ago. For a couple of seasons it sat outside under the lean-to covered by a tarp. 
When I pulled the engine (a 1982) it had 160,000 miles on it - original engine, mostly original parts.
I put a second nut on one of the studs and using a box wrench and an open end wrench, locked them against each other. I then put on a short open end wrench and turned the nuts as if to loosen the stud. 
It screwed right out. The other stud looks fine and the nut I put back on it several years ago before parking the engine turned right off - Then I looked at one of the spares on my shelves - and noticed I already had the studs out, then remembered, oh, yeah, when I pulled THAT ONE in the junk yard, the studs screwed right out of the manifold! The nuts were sticky on the studs but the studs came right out, no issue. So that's three of 4 that simply "screwed out". Again, these are 1981 and later, not the earlier ones.
Since I see three intake manifolds sitting waaaaay up high on my shelves, that tells me I should have at least a second exhaust manifold on the shelves buried among all the other stuff like spare heads, blocks, 258 headers and so on.
If I DID have a second spare, I'd consider selling it. I really only need one spare and can pick up another in minutes from the Eagle guys if I wanted one. 
So I guess I can back up my thoughts on the studs being a non-player here - I tried one and it came right out, and the other two came out easily at a JUNK YARD in the heat, mud and skeeters. (with no jack, having to do it ALL from above the fender, not under the car)

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billd Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Forum Administrator Joined: Jun/27/2007 Location: Iowa Status: Offline Points: 30894	Post Options Post Reply Quote billd Report Post Thanks(0) Quote Reply Posted: Jul/04/2018 at 10:56am
	OK, to be fair and prove myself right - ..... or wrong....... I went to the 258 that I took out of my SX4 several years ago. For a couple of seasons it sat outside under the lean-to covered by a tarp. When I pulled the engine (a 1982) it had 160,000 miles on it - original engine, mostly original parts. I put a second nut on one of the studs and using a box wrench and an open end wrench, locked them against each other. I then put on a short open end wrench and turned the nuts as if to loosen the stud. It screwed right out. The other stud looks fine and the nut I put back on it several years ago before parking the engine turned right off - Then I looked at one of the spares on my shelves - and noticed I already had the studs out, then remembered, oh, yeah, when I pulled THAT ONE in the junk yard, the studs screwed right out of the manifold! The nuts were sticky on the studs but the studs came right out, no issue. So that's three of 4 that simply "screwed out". Again, these are 1981 and later, not the earlier ones. Since I see three intake manifolds sitting waaaaay up high on my shelves, that tells me I should have at least a second exhaust manifold on the shelves buried among all the other stuff like spare heads, blocks, 258 headers and so on. If I DID have a second spare, I'd consider selling it. I really only need one spare and can pick up another in minutes from the Eagle guys if I wanted one. So I guess I can back up my thoughts on the studs being a non-player here - I tried one and it came right out, and the other two came out easily at a JUNK YARD in the heat, mud and skeeters. (with no jack, having to do it ALL from above the fender, not under the car)
	http://theamcpages.com http://antique-engines.com

partsguy Members Profile Send Private Message Find Members Posts Add to Buddy List Supporter of TheAMCForum Joined: Jan/23/2016 Location: ca Status: Offline Points: 251	Post Options Post Reply Quote partsguy Report Post Thanks(0) Quote Reply Posted: Jul/04/2018 at 3:23pm
	i dont know how the smog laws are now,but back then you had to have any welding on exhaust done at a shop or it made it tampered with,i welded a new cat on my pickup back then and it failed as tampered with too,and that time i didnt hollow out the cat as i mostly did back then

Thikstik Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Mar/20/2008 Location: Alabama Status: Offline Points: 1327	Post Options Post Reply Quote Thikstik Report Post Thanks(0) Quote Reply Posted: Jul/11/2018 at 11:17pm
	Not sure what size hole is but i had success plugging a pipe using course steel wool and really cramming it thick.
	75 gremlin x, jeep 4.0 headed 258, 264H Cliff cam, intake,header. 390 holley. I want a 282 VAM motor! AC/PS/PDB. 72 AMX , 304 2bbl, 3speed, now disks...probably will sell, want an automatic /AC.

DocCreer Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Oct/03/2009 Location: Portland Oregon Status: Offline Points: 1568	Post Options Post Reply Quote DocCreer Report Post Thanks(0) Quote Reply Posted: Aug/03/2018 at 4:43pm
	Can i just swap to a manifold without smog.
	61 American 82 eagle limited