Manifold leak AC B
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=139851
Printed Date: 29 Dec 2025 at 7:28pm
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Topic: Manifold leak AC B
Posted By: Ted in NE-OH
Subject: Manifold leak AC B
Date Posted: 27 Jun 2017 at 4:21pm
I have a leaking manifold, I will have the manifold surfaced, but it is too late to do anything to the engine. Would two gaskets help?, is there any high temperature gasket cement?, any other solutions, or suggestions.
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CA, WD, C, 3 Bs, 2 Gs, WC, I-400, 914
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Replies:
Posted By: Dick L
Date Posted: 27 Jun 2017 at 5:25pm
What did the ports look like on the head? If they were not rusted to where it would cause a leak it should seal if the manifold is cleaned up. I wouldn't use two manifold gaskets. After you have the manifold surfaced and it looks like you have some low areas on the head you could use some epoxy cast iron. Spray some paint on the head around the ports and take a flat file and remove the paint or as much as you can. That will show the low spots if you have any.
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Posted By: Ted in NE-OH
Date Posted: 27 Jun 2017 at 9:40pm
bump
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CA, WD, C, 3 Bs, 2 Gs, WC, I-400, 914
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Posted By: CTuckerNWIL
Date Posted: 28 Jun 2017 at 7:53am
It's never too late to fix the exhaust ports on the head if they are eroded. Do like Dick said or find a GOOD straight edge to check the side of the head for low spots. There are all kinds of epoxies out there that could be used. Find the right one and you can fix low spots with it still on the tractor.
Having the manifold machined is a waste if you don't have a decent surface on the head to seal up to.
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Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF
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