Farm Equipment - Allis G piston stand out question.

Print Page | Close Window

Allis G piston stand out 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=47169
Printed Date: 29 Aug 2025 at 8:39pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Allis G piston stand out question.

Posted By: Richardmo
Subject: Allis G piston stand out question.
Date Posted: 12 Mar 2012 at 10:28pm

Well i am back on the Allis G engine and finally completely took the engine apart.

the pistons stand above the block at least .064 i measure this with a feeler gauge.

I think the pistons are hitting the head causing a knocking noise.

Question is there anything i can do with this block?

I have extra block laying around and notice those pistons only stand out just above the block.

Replies:

Posted By: Matt (Jordan,MN)
Date Posted: 13 Mar 2012 at 12:58am

I had this problem with my WD45 Diesel. I took the pistons to the engine machineist and had them machine .020 off the head of the piston and the knock went away. This made me vary happy since i was trying to figure out what was makeing the knock for 2 years. Matt

Posted By: Richardmo
Date Posted: 13 Mar 2012 at 8:53pm

Thanks Matt

I wounder how the top ring or the piston will hold up by machine off the top of the piston?

Posted By: Kip-Utah
Date Posted: 14 Mar 2012 at 8:49am

Perhaps a "poor boy" fix is stacking 2 head gaskets? I would definitely copper coat, or light application of lithium grease between them if going this route. Kip

-------------
HANSEN'S OLD ORANGE IRON. Showing, Pulling, & Going!!