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| joeld | Casting Hole Plug(lead slug) loose | ||
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Guru
 
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In the process of re-building a Q-Jet, found one of the lead plugs in the body loose. It's not the bigger ones under the metering rods, it's a small 5/32 plug.
Anybody ever replace these? Thought about using JB Weld, not sure if this would hold up being in gas constantly. Could drill & tap to use a screw to seal with? Or some high lead content solder? Any ideas? Thanks Joel |
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Posted on: 2011/6/18 16:30
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| BillH | Re: Casting Hole Plug(lead slug) loose | ||
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The Stig Moderator
 
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Posted on: 2011/6/18 17:02
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| joeld | Re: Casting Hole Plug(lead slug) loose | ||
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Thanks Bill,
Seems like JB Weld is what people use around the plugs for a little insurance. I might tap the hole and then use JB around the threads. Or just use the JB. Joel |
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Posted on: 2011/6/18 19:52
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| BillH | Re: Casting Hole Plug(lead slug) loose | ||
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The Stig Moderator
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Quote:
I'd upgrade to the Waterweld but, the only real experience I have with regular JB is with brake fluid (pressure bleeder) and it started to fail after 2 years. |
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Posted on: 2011/6/18 20:48
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| Matatk | Re: Casting Hole Plug(lead slug) loose | ||
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I thought guys used epoxy on those? I have no personal experience.
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Posted on: 2011/6/19 2:57
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| Matatk | Re: Casting Hole Plug(lead slug) loose | ||
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Look here for suggestions:
http://www.hotrodders.com/forum/leaking-quadrajet-138013.html Apparently epoxy is what they used when built. JB weld will fail after heat cycles. One person says drill and tap it, another says use permatex repair stick. Just a few things to consider. |
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Posted on: 2011/6/19 3:03
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| BillH | Re: Casting Hole Plug(lead slug) loose | ||
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The Stig Moderator
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Looks like JB's been used in some apps. And 2 other epoxy part numbers:
http://speedtalk.com/forum/viewtopic.php?f=1&t=17723&start=0 And a pic of the pulgs epoxied (good article). http://books.google.com/books?id=DwUM ... for%20carburetors&f=false |
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Posted on: 2011/6/19 13:25
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| joeld | Re: Casting Hole Plug(lead slug) loose | ||
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OK, just a quick update. I decided to tap the hole and use a 10-32 screw. I "wrapped" the threads with the Waterweld from JB Weld, this was the first time using this particular epoxy. It is NOT user friendly trying to finese around a small screw. It would be great for a larger hole.
Carb is back on and running very nice as of right now. I'll do another update in a few years on the sealer on how good it stands up to gas! Thanks for the replies! Joel |
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Posted on: 2011/6/22 21:18
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