Allis WC engine
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=208965
Printed Date: 25 Jan 2026 at 9:25am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Allis WC engine
Posted By: Ttague39B
Subject: Allis WC engine
Date Posted: 18 Nov 2025 at 4:36pm
| I recently bought a 1937 allis wc, it has the distillate carb and auxiliary gas tank, so I wanted to check the engine number to see if it was truly a distillate engine, and it started with a "W" like it should, but instead of ending with a "K" or "G" like the book says, it ends with a "HA" and I read on a different forum that it means it was tuned for High-Altitude, and I just wanted to check if this was true, and if there was still a way of proving its a factory distillate engine. Any knowledge on it would be greatly appreciated, Thank you. |
Replies:
Posted By: steve(ill)
Date Posted: 18 Nov 2025 at 8:46pm
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You might try checking the compression ratio ?? ------------- Like them all, but love the "B"s. |
Posted By: Ttague39B
Date Posted: 18 Nov 2025 at 9:23pm
| I was seeing that myself, any ideas on the best way to do that? I've seen and been told not to trust a compression test of hand cranking, my thought was hook the belt pully up to another tractor. |
Posted By: steve(ill)
Date Posted: 18 Nov 2025 at 11:04pm
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belt pully idea might work... I guess my question is WHY ? What difference does it make now ? ------------- Like them all, but love the "B"s. |
Posted By: Les Kerf
Date Posted: 19 Nov 2025 at 6:05am
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Sometimes it is nice just to satisfy curiosity  Belt pulley will definitely 'gitter dun'! |
Posted By: Ttague39B
Date Posted: 19 Nov 2025 at 6:08am
| Okay thank you guys! Its just neat seeing that out of 178 thousand tractors, there's individuality. Especially to this dagree. |
Posted By: DrAllis
Date Posted: 19 Nov 2025 at 6:12am
| Since 1937, the engine has surely been overhauled. The great majority of owners 10 or 20 years later saw the advantages of gasoline fuel and when an engine OH took place, got higher compression pistons. Without looking at my service manual, I'd say gasoline pistons would be 110 psi compression and kerosene 80 psi. Check with throttle in the wide open position. |
Posted By: Les Kerf
Date Posted: 19 Nov 2025 at 6:25am
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If the engines starts readily with the hand crank you can pull a spark plug and screw in the compression tester for a 'running' test. Do ground the plug wire to prevent magneto damage. |