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#1 |
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Senior Member
![]() Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,950
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Exhaust manifold
Thread size for this hole in the manifold. Believe it has to do with the AIR system I want to put a brass plug in it
image by [url=https://www.flickr.com/photos/97391199@N06
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Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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#2 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,973
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Re: Exhaust manifold
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#3 |
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Registered User
Join Date: Mar 2015
Location: Ontario Canada
Posts: 1,612
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Re: Exhaust manifold
If it's an oddball thread, run a pipe tap in it, I would use a steel plug, not brass.
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#4 | |
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Senior Member
![]() Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,950
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Re: Exhaust manifold
Quote:
Thanks Geezer read the thread, how do you find the info……search?
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim Last edited by jaros44sr; 05-11-2025 at 08:41 PM. |
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#5 |
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Registered User
Join Date: Mar 2015
Location: Ontario Canada
Posts: 1,612
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Re: Exhaust manifold
Brass is OK by itself, but when mated to dissimilar metal like cast iron it could cause issues especially with heat cycles. Will it work, I'm sure you would have no issues. I just like to keep different metals away from each other whenever possible. Good practice IMO.
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#6 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,973
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Re: Exhaust manifold
I search with google images.
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#7 | |
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Senior Member
![]() Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,950
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Re: Exhaust manifold
Quote:
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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#8 |
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Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,788
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Re: Exhaust manifold
I don’t think that’s an air pump hole… There would be one in each set of cylinders. Looks more like a manifold that has had the generator mount cut off. Does it leak exhaust out of the hole? I’d try a 3/8-16 plug and see if that would work.
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#9 |
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Senior Member
![]() Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,950
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Re: Exhaust manifold
To answer your question it does leak exhaust….
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
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#10 | |
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Registered User
Join Date: Mar 2015
Location: Ontario Canada
Posts: 1,612
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Re: Exhaust manifold
Quote:
It will be an oddball thread so IMO the best fix it to run a pipe tap in it. I would start with a 3/8" NPT or maybe even a 1/2" NPT. Last edited by hemi43; 05-23-2025 at 03:12 PM. |
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