Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Attention Forum Users: On the 28th of December 2023 at 9:00am Central Time, we will be taking the forums down for maintenance while we prepare the new forums for your use. Please click here for more information.

Allis Chalmers Discussion Forum
:

B Engine Block Crack Repair

Welcome Guest, Log in or Register
Author 
Whiskers1949

12-23-2005 13:17:25




Report to Moderator

Well, I finally got around to tearing down my "42B. Pistons and cylinders look fine, but I noticed two small cracks in the block between the liners of cylinders 1 & 2 and 2 & 3. What"s the best way to fix this problem? I haven"t torn it all down yet, but it also looks as though the crank journals may have problems due to rust. Are oversize bearings available? Or, should I start looking for another short block?

[Log in to Reply]   [No Email]
TxAllisMan

12-25-2005 11:30:27




Report to Moderator
 Re: B Engine Block Crack Repair in reply to Whiskers1949, 12-23-2005 13:17:25  
I have a 41 C which had cracks at the top and bottom of the liners and I did nothing to them and they have never leaked any. If they do leak use ceramic block sealer and you will never have any problems.



[Log in to Reply]  [No Email]
BushogPapa

12-24-2005 11:04:50




Report to Moderator
 Re: B Engine Block Crack Repair in reply to Whiskers1949, 12-23-2005 13:17:25  
To clean up the crank journals, never use steel wool.. Use Crocus Cloth with oil... Rip a piece about the same width as the journal and wrap it around the journal with oil, and then wrap a long piece of Cotton Clothes line neatly coiled around the journal... Then, pulling each opposite end, spin the Crocus Cloth... It will polish like all get out, and not take any measureable metal off either.. You may have to do it several times to get it like you want it, but it is the way to do it.. On the cracks at the bottom....once you have the bottom end back together and are done down there, turn the block rightside up and carefully pour in through a hose, one pint of non-hardening Permatex (have the water jacket clean). That is, if you don't want to pull the sleeves, or even if you do, use the same permatex to install the sleeves.. Good Luck..!! Ron..

[Log in to Reply]  [No Email]
Rich Perry

12-24-2005 10:42:49




Report to Moderator
 Re: B Engine Block Crack Repair in reply to Whiskers1949, 12-23-2005 13:17:25  
First time replying to a question on this forum and I can't even get the suggested website correct-so here is the corrected website:

Link

Sorry for misinformation



[Log in to Reply]  [No Email]
Rich Perry

12-24-2005 10:32:52




Report to Moderator
 Re: B Engine Block Crack Repair in reply to Whiskers1949, 12-23-2005 13:17:25  
I have the same problem on 2 1939 model B engines with cracks on the top and bottom, I'am planing doing a air leakdown on the water passages on my 1938 engine which is still assembled and sitting on an engine stand-don't know what this will tell.
Back in June 2005 on this Allis Chalmers Discussion Board forum found this under "Topic: Cracked block" website talking about cracked block:

Link

Hope this helps and Merry Christmas to all

[Log in to Reply]  [No Email]
steve(ill)

12-23-2005 18:18:46




Report to Moderator
 Re: B Engine Block Crack Repair in reply to Whiskers1949, 12-23-2005 13:17:25  
the cracks are no rpblem inf less that .050 inch wide, they will seal up with the head gasket. if big enough to get your finger nail into, you need to repair.--- the crank has shims on the bearing caps. you can remove 1 or 2 to get a few thousands tighter. depending on what you are seeing, you may be able to polish the journals with steel wool or sand paper and then shim back to size. couple small pits are no big deal. main thing is to have it round.

[Log in to Reply]  [No Email]
J. Schwiebert

12-23-2005 14:58:48




Report to Moderator
 Re: B Engine Block Crack Repair in reply to Whiskers1949, 12-23-2005 13:17:25  
Are these cracks at the top of the block or at the bottom. If they are at the top, I would not loose any sleep over them. On the bearings, you are looking at undersize bearings if the crank is to be ground. Oversize bearings are an odd baall where the outsie diameter is larger than standard. The first application that comes to mind on that the small V-8 Cats. Questions/



[Log in to Reply]  [No Email]
arjay

12-23-2005 18:53:42




Report to Moderator
 Re: B Engine Block Crack Repair in reply to J. Schwiebert, 12-23-2005 14:58:48  
What if the cracks are in the web between the cylinders\sleeves at the bottom of the block. I think that is where I have a small leak.

How can I verify this is a place that is leaking and if it is leaking, how to fix it??

bob



[Log in to Reply]  [No Email]
J. Schwiebert

12-24-2005 03:09:00




Report to Moderator
 Re: B Engine Block Crack Repair in reply to arjay, 12-23-2005 18:53:42  
As mentioned below, it is a wet sleeve engine and you could also have an O-ring that has deterioted and is leaking. Take the pan off and put some coolant in it and see where it leaks. Questions?



[Log in to Reply]  [No Email]
Whiskers1949

12-23-2005 18:16:11




Report to Moderator
 Re: B Engine Block Crack Repair in reply to J. Schwiebert, 12-23-2005 14:58:48  
The cracks are on the top deck where the head mates to the block. I haven't pulled the liners yet... I may not choose to do so. I guess my next question is this engine a wet or dry sleeve?



[Log in to Reply]  [No Email]
JMCHAPMAN

12-23-2005 21:22:51




Report to Moderator
 Re: B Engine Block Crack Repair in reply to Whiskers1949, 12-23-2005 18:16:11  
They are wet sleve. Very easy to replace with home made puller and then block of wood and a hammer.



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums


Copyright © 1997-2023 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy