Farm Equipment - G manifold

Print Page | Close Window

G manifold

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=189435
Printed Date: 01 Apr 2026 at 2:41pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: G manifold

Posted By: Kiwi
Subject: G manifold
Date Posted: 12 Jul 2022 at 2:54am

Hi all is there anyway of cutting new threads for the muffler in a G manifold or do I need a new one.

-------------
Tractors Allis EB,two C,diesel G

Replies:

Posted By: AaronSEIA
Date Posted: 12 Jul 2022 at 5:30am

You can try to tap new threads in. When I had a shop do that with my D17 manifold, the tap split the top of the manifold.

AaronSEIA

Posted By: Gatz in NE
Date Posted: 12 Jul 2022 at 9:48am

By "cutting new threads", do you mean the old threads are stripped out ?

If so, is there enough (cast) material to re-thread? Might try tapping it anew as Aaron said. OR, does it require going to the next size NPT?

Then something else to consider.... If there's a machine shop in your area that has a CNC mill with a threading cycle. Ask them if they can do it. Shouldn't be too much of a challenge.

Of course, both these suggestions assume there's material there.