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How screwed am I on this Allis WD45 block?

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=204211
Printed Date: 08 May 2025 at 12:15pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com


Topic: How screwed am I on this Allis WD45 block?
Posted By: twinson
Subject: How screwed am I on this Allis WD45 block?
Date Posted: 18 Nov 2024 at 1:26pm
What are the chances that both sleeve rings have failed on sleeve 3 & 4 and the block is not cracked?



Replies:
Posted By: DrAllis
Date Posted: 18 Nov 2024 at 6:10pm
What are the odds that four Orings have failed on TWO sleeves exactly in the center of the block right where the blocks are known to crack ??


Posted By: twinson
Date Posted: 18 Nov 2024 at 7:49pm
Yeah, that's what I was thinking.  This block is junk then correct?



Posted By: AC720Man
Date Posted: 18 Nov 2024 at 8:57pm
Kinda looks like the one cylinder has been leaking for awhile according to the rust around the sleeve at the block. Did you pressure test it? 

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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD


Posted By: DrAllis
Date Posted: 18 Nov 2024 at 9:23pm
Probably junk.


Posted By: twinson
Date Posted: 18 Nov 2024 at 9:28pm
Pressured up to 15psi and started dripping.  Lost pressure within 5 minutes.


Posted By: AC720Man
Date Posted: 19 Nov 2024 at 6:59am
It may be junk but the only way to know is to tear it apart. A few hours of work and you will know.

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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD


Posted By: Lon(MN)
Date Posted: 19 Nov 2024 at 7:07am
I have a bare block with no cracks between the cylinders if you are interested.

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http://lonsallischalmers.com


Posted By: steve(ill)
Date Posted: 19 Nov 2024 at 8:03am
has anyone ever tried any BLOCK SEALER in this application... Either something like BARS that you pour into the antifreeze and run it... or a liquid you pour in around the liners and let it harden around the base ? ( when the block is empty and head is off )..

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Like them all, but love the "B"s.


Posted By: HudCo
Date Posted: 21 Nov 2024 at 10:13am
i would like to see bad the pitting is right around the orings  my series 4 engine  block my might be to bad to keep mine sealed  sealed up , dont know if any thing can be done down in the bottom of the counter bores


Posted By: Sugarmaker
Date Posted: 21 Nov 2024 at 8:42pm
twinson,
 BTDT. 
It sounds like your pressure test found the issue. Were you getting coolant in the oil? Gray foamy stuff under the valve cover? 
I had to replace the block in my 45 project. Just lucked out and had a rebuild-able block sitting in the garage. It was not a cheap date, but nothing is now days. You might find a running engine??
Keep us informed. 
Regards,
 Chris and Cheryl


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D17 1958 (NFE), WD45 1954 (NFE), WD 1952 (NFE), WD 1950 (WFE), Allis F-40 forklift, Allis CA, Allis D14, Ford Jubilee, Many IH Cub Cadets, 32 Ford Dump, 65 Comet.


Posted By: twinson
Date Posted: 21 Nov 2024 at 8:44pm
Gray foam yes.  Looking for a new block that wouldn't too far of a drive.



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