Farm Equipment - Allis B

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Allis 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=212497
Printed Date: 13 Oct 2026 at 8:09am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Allis B

Posted By: john2189
Subject: Allis B
Date Posted: 13 Oct 2026 at 6:06am

Just curious, Is there any way to tell if a 1942 engine is factory original? I’m about ready to rebuild it soon.

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'41 Allis B
'49 Farmall Cub

Replies:

Posted By: steve(ill)
Date Posted: 13 Oct 2026 at 7:33am

the only things that can possibly not be "original" is the piston / liners / rings... You never know if they have the overbore pistons and liners, or factory parts... Gaskets, cam, crank, rods, gaskets, everything else will be "original" ... at least in size... You would have to take the head off to see what the bore is... There were some aftermarket pistons that might use a different size rings... so pull one piston before you order rings..

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Like them all, but love the "B"s.