WD and WD45 Engine
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=172235
Printed Date: 11 Aug 2025 at 12:11pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: WD and WD45 Engine
Posted By: codyrandall21
Subject: WD and WD45 Engine
Date Posted: 22 Jun 2020 at 11:23am
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I bought a house a couple of years ago. It came with a WD sitting in the barn with a blown rod. I haven't had the time to deal with it. I just found a Craigslist posting in my area for a complete WD45 Engine for $350. I've done a bit of reading and it looks like the WD45 Engine will direct fit into my WD. Is that correct? Also, while I have your attention, does it sound like a fair price? Anything I need to be weary of? Thanks for your help and expertise.
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Replies:
Posted By: GreenOrange
Date Posted: 22 Jun 2020 at 12:26pm
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Cody - yes, it will bolt right in. The air cleaner hose is bigger on a 45, so if you're running the 45 carb, you'll have to rig it up or change-out with a 45 air cleaner. As for things of which to be weary, it'll be difficult to assess unless you can see & hear it run. Most any of the issues - blow by, low oil pressure, etc. require running to test. You could do a compression test to get some idea of it's condition. Inspect the manifold for cracks and burnout too. Overall, they're good reliable engines. $350 for a good, complete running engine seems like a fair/good deal to me.
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Posted By: B26240
Date Posted: 22 Jun 2020 at 6:32pm
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There is a BIG difference between running and non-running ! If I was in your situation I would consider paying $350 for a non-running engine if it came with all acc. (gen, carb, dist, and as said above air cleaner if you plan on useing the WD45 carb. Keep us posted.
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Posted By: wide
Date Posted: 23 Jun 2020 at 12:39am
I hear the WD has a magneto and the WD45 has a distributor.
Can these be swapped from one engine to the other?
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Posted By: Dusty MI
Date Posted: 23 Jun 2020 at 7:10am
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My dad bought a new '53 WD. It came with a battery ignition.
Dusty
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917 H, '48 G, '65 D-10 series III "Allis Express"
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Posted By: IBWD MIke
Date Posted: 23 Jun 2020 at 8:47am
According to my notes; Battery ignition for the model WD started at serial no. 136318. Yes the distributor/mag can be switched between the models. Personally, not a big magneto fan. I'm sure they work fine if everything is 'right'. Distributor seems to be more forgiving.
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