Farm Equipment - sealing bad D8H head crack (pepper?)

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sealing bad D8H head crack (pepper?)

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=19311
Printed Date: 07 Feb 2025 at 11:16pm
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Topic: sealing bad D8H head crack (pepper?)

Posted By: wrwtexan
Subject: sealing bad D8H head crack (pepper?)
Date Posted: 10 Oct 2010 at 11:02pm

I have an old Cat D8H farm dozer which is blowing water out the exhaust and pressurizing the cooling system. I sealed it several years ago with KW, but recently got it hot and it opened up again. This time the KW did not work and with the size of this machine and the time it is run per year, I want to try a quick fix. Does black pepper work very well for crack sealing or is there something else better. It is a 20 gallon system so expensive small engine sealers are too expensive a gamble.

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220, 190XT, 2 D17's, WD45, 2 CA's, C, M2 Forkbine

Replies:

Posted By: Jeff Z. NY
Date Posted: 10 Oct 2010 at 11:19pm

This stuff is not that cheap but it may just fix that crack once and for all.

http://www.heal-a-seal.com/

Posted By: Brian Jasper co. Ia
Date Posted: 11 Oct 2010 at 6:22am

I know this isn't a cheap fix, box up the cracked head and ship it to Midwest Cylinder Head in Nevada Iowa. If it's cast, they can weld it.

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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford

Posted By: mlpankey
Date Posted: 11 Oct 2010 at 6:27am

cornbread works better. belzona is the best liquid glass second in my opinion.

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

Posted By: Coke-in-MN
Date Posted: 11 Oct 2010 at 6:43am

flax seed meal, get it at your drug store or health food store.

Bars Leak block seal powder , worked on my UD14 IH engine head on grader

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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."

Posted By: firebrick43
Date Posted: 11 Oct 2010 at 8:47am

Good lord, you are taking an expensive gamble trying to seal things like that. Take the head off and get it stitched up(pinned), or if you like to gamble slightly more, welded.

Posted By: Brian Jasper co. Ia
Date Posted: 11 Oct 2010 at 11:48am

Sounds like Brick and I agree. Around here Midwest Cyl Head has a very good rep fixing cracked heads and blocks.

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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford