WD-45 Oil flow
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=140444
Printed Date: 05 Sep 2025 at 6:03pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: WD-45 Oil flow
Posted By: DennisA (IL)
Subject: WD-45 Oil flow
Date Posted: 15 Jul 2017 at 5:59pm
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I'm just finishing a complete engine rebuild and would like to know the best way to get rid of the oil bypass. ------------- Thanks & God Bless Dennis |
Replies:
Posted By: DougS
Date Posted: 15 Jul 2017 at 7:21pm
| Do you mean plug it off or replace it with a full flow system? |
Posted By: DennisA (IL)
Date Posted: 15 Jul 2017 at 7:57pm
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I would like 100% of the oil to be filtered. ------------- Thanks & God Bless Dennis |
Posted By: DougS
Date Posted: 15 Jul 2017 at 8:45pm
| It's in the knowledge base. I'm using my cell phone right now so I can't link to it. It looks complicated. New oil pump and all. |
Posted By: Allis dave
Date Posted: 15 Jul 2017 at 9:27pm
| There's an article how to make the change in the knowledge base. Unfortunately photobucket took the pictures down. I'll have to upload them to the forum to make the article useful again. |
Posted By: DanD
Date Posted: 15 Jul 2017 at 9:52pm
| Just wondering what kind of use this tractor is expected to see? |
Posted By: SteveM C/IL
Date Posted: 15 Jul 2017 at 11:13pm
| You'll be drilling and tapping existing oil passages.Better when it's apart but with regulated air blowing the right way for given drilling/tapping,I think it could be accomplished assembled. Doc said he did a WD in the tractor once. |
Posted By: Gerald J.
Date Posted: 16 Jul 2017 at 10:36am
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The bypass system has functioned for nearly 70 years in that tractor so long as the filter makers didn't mess up by "modernizing" the filter to folded paper instead of stuffed full with fibers. Maybe it desired oil changes more often than the full flow system, but considering the changes in oil performance in that time period the modern detergent oil with anti corrosion additives works better than the oil did in the 1950s and before. Gerald J. |
Posted By: Bill_MN
Date Posted: 16 Jul 2017 at 5:47pm
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If you're just finishing the rebuild it's too late, unless you want to take it down to BARE block again. There is some drilling and tapping deep in the block and with cam and crank in there's no way you could get all the shavings out. You also need to find a late D17 oil pump and filter base/lines to make it work. It is definitely superior to bypass and worth the work. ------------- 1951 WD #78283, 1918 Case 28x50 Thresher #76738, Case Centennial B 2x16 Plow |
Posted By: Stan IL&TN
Date Posted: 17 Jul 2017 at 8:12am
Dennis the stock oil filter system will do just fine. That engine as is will outlast us all. ------------- 1957 WD45 dad's first AC 1968 one-seventy 1956 F40 Ferguson |
Posted By: DougS
Date Posted: 17 Jul 2017 at 9:59am
| Today's better oil and a good full flow oil filter will give you more time on an engine between overhauls. You might even be able to get by with fewer oil changes. The problem is the cost of the project will be greater than the return you'll get with extra engine life. |
Posted By: DanD
Date Posted: 17 Jul 2017 at 12:40pm
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The reason I asked what type of service the tractor is likely to see has been touched on by a couple of the other posts. If it's going to go on tractor rides, parades and tractor shows a few times a year and then maybe rake hay a few times, then I doubt that you'll ever see any benefit to doing this conversion. If it's going to be the main field power on your farm (unlikely I assume) then go for it. If you just want to do it, go for it. Otherwise I'd just leave it the way it's been for the last 60+ years. |
Posted By: SteveM C/IL
Date Posted: 17 Jul 2017 at 12:56pm
| ...it's simple,easy and inexpensive to change....why wouldn't ya? |