Farm Equipment - Wd rocker arms

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Wd rocker arms

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=165795
Printed Date: 07 Sep 2025 at 6:19am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Wd rocker arms

Posted By: Onalaska Ben
Subject: Wd rocker arms
Date Posted: 12 Nov 2019 at 5:09pm

Has anyone used the Murphy motors rocker arms on a wd. Wondering if its worth it. I know in the automotive field going from 1.5 to 1.6 rockers on a Chevy helps but wasn't sure how the old tractor would perform.

Replies:

Posted By: DrAllis
Date Posted: 12 Nov 2019 at 8:09pm

Let's say we both have identical WD engines, except for the fact that mine has a WD45 carburetor, manifold and air cleaner. Your's is 100% a WD carb, manifold and air cleaner. You add the Murphy rocker arms. I'll bet $$$$$ I still have more POWER.

Posted By: MACK
Date Posted: 12 Nov 2019 at 8:17pm

The Murphy rockers don't use bearings at pivot, so very little help + the tolerance is not good enough to put a caged bearing in them. MACK

Posted By: AaronSEIA
Date Posted: 13 Nov 2019 at 6:47am

I'm a long ways away from an engine bulder. It seems to me though on something that turns 1800 RPM the standard V8 performance tweeks for 5,000 RPM may not be worth it.

AaronSEIA

Posted By: Onalaska Ben
Date Posted: 13 Nov 2019 at 3:00pm

Thanks for the input. Stumbled across them and didn't know if anyone had done a test from stock rockers to them without any other changes.