Farm Equipment - CA Valve Spring Specs

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CA Valve Spring Specs

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=212572
Printed Date: 21 Oct 2026 at 2:57pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: CA Valve Spring Specs

Posted By: dfwallis
Subject: CA Valve Spring Specs
Date Posted: 21 Oct 2026 at 1:11pm

Ive finally gotten around to diagnosing the misfire issue. Im measuring valve spring tension and none seem to be as expected. The stongest one is 55psi and one was only 35psi. The head rebuild was supposed to take care of that. Ill measure again after i research my technique...i bought an on head tool. It seems easy enough to use. I & T says 55-65psi to 1 5/16". One source says 70 psi but none approach that.

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1952 CA13092, CA Pickup Plow, CA Cultivator, CA Two Row Planter, Dunham-Lehr GC78 Disc, Grader Blade, 3pt Fm180 Finish Mower