Farm Equipment - High Compression WC/WD piston

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High Compression WC/WD piston

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=7538
Printed Date: 04 Nov 2025 at 2:59am
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Topic: High Compression WC/WD piston

Posted By: MikeB (SD)
Subject: High Compression WC/WD piston
Date Posted: 02 Feb 2010 at 2:53pm

Looks like I got a set of used high compression pistons. Book says 6.6:1 compression, part number 224754 piston blank 224753 stamped on piston. Flat top's I'm measuring about 2-1/2 compression height. Should give over 10:1 compression with 45 crankshaft. Might be for sale I just grabbed one out of the shed to measure and it looks real nice. I'll have to check the other (3) when I go up to the farm next week.

Replies:

Posted By: JayIN
Date Posted: 03 Feb 2010 at 2:58pm

what size bore? 4" or 4 1/8" ?

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sometimes I walk out to my shop and look around and think "Who's the idiot that owns this place?"

Posted By: MikeB (SD)
Date Posted: 03 Feb 2010 at 3:36pm

Theses are OEM A-C 4.000" bore high altitude pistons. Pistons should hit the valves with the 45 crankshaft.