Farm Equipment - New valve guides

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New valve guides - dilemma??

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=209950
Printed Date: 02 Feb 2026 at 6:40pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: New valve guides - dilemma??

Posted By: J&J
Subject: New valve guides - dilemma??
Date Posted: 02 Feb 2026 at 4:05pm

The head from my CA is at the machine shop. They want to use a grooved bronze insert rather than the cast guides that came with the valve kit I supplied. They said, they can use umbrella seals with the insert, if not, the tractor will smoke "some". I thought seals were never to be used with this design head. I'm ok with bronze inserts, but not sure about the seals, and a new engine that smokes "some" is unacceptable to me. They claim it's the better way to go over pressing in new cast guides, either with or without using umbrella seals. Thoughts...