Farm Equipment - WC cracked block repair?

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WC cracked block repair?

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=11467
Printed Date: 25 Aug 2025 at 7:52am
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Topic: WC cracked block repair?

Posted By: JM
Subject: WC cracked block repair?
Date Posted: 24 Apr 2010 at 4:16pm

My WC has a crack down most the left side of the engine. There was a patch over it wich was leaking a little, looks like it has been there a while. Is there a good way to weld the crack shut instead of patching? I have seen some cast iron engines repaired with brazing rod in the past. Does anybody know what kind of rod to use? Any other suggestions? Also, are the cracks between the cylinder sleeves anything to worry about? Thanks, JM

Replies:

Posted By: mlpankey
Date Posted: 24 Apr 2010 at 4:44pm

nickle rod . Belzona 111 is what i use though .

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people if they don't already know it you can't tell them. quote yogi berra

Posted By: Clay
Date Posted: 24 Apr 2010 at 10:53pm

I have brazed them and also used nickle cast rod. Either method works quite well.
Covering the area with Belzona 1111 is the finishing touch. Properly applied, the Belzona will keep the casting from leaking.

Posted By: DrAllis
Date Posted: 25 Apr 2010 at 7:07am

Best in-chassis fix for a crack on the left side is make a 1/8" or 1/4" thick plate 2 to 3 inches wide and longer than the crack and drill/tap the block for 1/4" NC bolts and Hi-temp RTV silicone the plate to the side of the block after wire brushing off all the old paint. I'd drill a bolt hole every two inches or so. Cracks between the cylinder sleeves on the bottom mean the block is junk....two upper cracks next to each other (in my books anyway) also mean junk and if it's cracked on the side and in two or more places on top why wouldn't you just look for a different block???

Posted By: David Maddux
Date Posted: 25 Apr 2010 at 7:32am

One of my old WC tractors was fixed with lead sodier. A nice flexible fix.

Posted By: Coke-in-MN
Date Posted: 25 Apr 2010 at 8:51am

For some cast iron repairs this may be another method to try.

http://www.locknstitch.com/ - http://www.locknstitch.com/

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Life lesson: If you’re being chased by a lion, you’re on a horse, to the left of you is a giraffe and on the right is a unicorn, what do you do? You stop drinking and get off the carousel.