Farm Equipment - B engine block ID help

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B engine block ID help

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=177680
Printed Date: 27 Aug 2025 at 7:44pm
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Topic: B engine block ID help

Posted By: ORBill
Subject: B engine block ID help
Date Posted: 20 Jan 2021 at 4:04pm

I have a '48 B that after aggressive cleaning and pressure washing I came to the conclusion that the block and head did not start life together.

The engine serial number is R1126G.

I know the difference between the BE and CE blocks but would like to know what an "R" block is, if it is a factory replacement block or out of a combine or other power equipment.

If it is a factory replacement block did they come as a "short block" with crank, pistons, etc. or bare block?

TIA

BILL

Replies:

Posted By: DrAllis
Date Posted: 20 Jan 2021 at 5:46pm

"RC" tractor engine.

Posted By: ORBill
Date Posted: 20 Jan 2021 at 6:16pm

Thanks Dr

If these things could talk, the stories they could tell.

Bill