Farm Equipment - Briggs 23D swap

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Briggs 23D swap

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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=23058
Printed Date: 22 Feb 2025 at 2:26am
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Topic: Briggs 23D swap

Posted By: KS Husker
Subject: Briggs 23D swap
Date Posted: 30 Dec 2010 at 5:34am

I have a Briggs 23D in my Simplicity Landlord. Needs overhaul, burning lots of oil. I have a chance to buy a good running model 23 I would like to put in it. What is the difference between a 23 and a 23D? I know a 23 is older but anything else?

Replies:

Posted By: 427435
Date Posted: 30 Dec 2010 at 10:12am

Here's a forum with a lot of knowledgeable A-C/Simplicity garden tractor people on it.

http://www.simpletractors.com/club2/forum.asp?FORUM_ID=7 - http://www.simpletractors.com/club2/forum.asp?FORUM_ID=7

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Mark

B10 Allis, 917 Allis, 7116 Simplicity, 7790 Simplicity Diesel,
GTH-L Simplicity

Ignorance is curable-----stupidity is not.

Posted By: Brian Jasper co. Ia
Date Posted: 30 Dec 2010 at 10:22am

The changes I know of are mainly in the ignition system. The earliest 23 engines have an ignition system known as Magna-Matic. It's not the same as Magnatron since it still uses points where Magnatron is breakerless. Magna-Matic has a timing advance mechanism. These engines will have the coil under the flywheel. Later model engines use the typical external coil next to the rim of the flywheel. There are other possible differences such as ball bearing mounted crank vs a plain bushing and a Stellite exhaust valve. All things considered, the early 23 would be better in my opinion.

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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford

Posted By: Coke-in-MN
Date Posted: 30 Dec 2010 at 11:56am

Seems a lot of these engine swaps just take a little head scratching and it can be done. Replaced the Kohler in my New Holland S16 with Techumsa the ifrst time and now have a Honda 18 HP in it , other S16 I have now has a 16 B&S 2 cyl opposed in it , all horizontal crank. Just put 18 HP B&S into older DutzAlis 616 and changed right in, just had to change one thing on crab.

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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."

Posted By: KS Husker
Date Posted: 04 Jan 2011 at 5:49am

Got model 23 picked up saturday. Only difference I see is the coil under flywheel. Runs good. Plowed garden sunday just to see how it would pull. Ready for some snow so I can get it out and play some more.