Farm Equipment - G engine question

Print Page | Close Window

G engine question

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=153789
Printed Date: 29 Oct 2025 at 9:49am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: G engine question

Posted By: MNLonnie
Subject: G engine question
Date Posted: 08 Sep 2018 at 9:21am

Went to fire up the G the other day and heard a metallic snap and then it had no compression. I assumed broken camshaft/timing gear or something but this morning I pulled it in the shop and all 4 intake valves are stuck open and all 4 exhaust valves are working fine. Before I tear it apart I would like to know what would cause this?

-------------
Waukesha B, B, IB, G, styled WF, D15, 615 backhoe, 2-Oliver OC3's, 4 Ford Model T's, 3 Model A Fords, AV8 Coupe, AV8 Roadster, 1933 Ford Wrecker

Replies:

Posted By: Tracy Martin TN
Date Posted: 08 Sep 2018 at 7:20pm

If the exhaust are opening and closing, I would bet the intake are stuck from water.They all shouldn't be stuck at completely open unless rust has seized them after you turned engine over. With the cover off you should be able to inspect the valve stems. Try some kroil and see it they will free up.Hth Tracy

-------------
No greater gift than healthy grandkids!

Posted By: JoeM(GA)
Date Posted: 08 Sep 2018 at 7:32pm

Like Tracy said, rust has formed on intake stems, first time they opened

the rust dug in to the guides and they all stuck in succession

-------------
Allis Express North Georgia
41 WC,48 UC Cane,7-G's,
Ford 345C TLB