Farm Equipment - 190 Gas-Prone to head cracking?

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190 Gas-Prone to head cracking?

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=139155
Printed Date: 08 Sep 2025 at 4:04pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: 190 Gas-Prone to head cracking?

Posted By: nowaktj
Subject: 190 Gas-Prone to head cracking?
Date Posted: 07 Jun 2017 at 5:27am

Hi guys-I picked up a 190 over the weekend that is in a basket.

I was looking at the head and it appears to have cracks in the vicinity of the spark plug pocket to the valve seat areas.

Are these heads prone to cracking? Are they typically repairable?

Also, a quick check showed that it was out of flat by 0.009. Is that typical too?

I have it at a cylinder head shop so I will have to wait and see what the magnflux results are.

Thanks in advance for the help,

Terry

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D19D, D17D, WD, WC, Snobee, #83 Plow, SC Blade, 14' disk, 400 series planter, B , Terra Tiger, M Dozer w/Baker Blade, TL-12, 42S Grader, G

Replies:

Posted By: dave63
Date Posted: 07 Jun 2017 at 8:38pm

Sounds like it got run hot.

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The universal answer to all questions is yes, how much do you want to spend?

Posted By: Lonn
Date Posted: 08 Jun 2017 at 5:56am

Not too many gassers around but I never heard of any kind of head problems. Broken pistons in the early models, yes, and the early models used a Holley carb which is supposedly junk. Dad had an XT with 301 gas and other than it just plain wore out he never had issues with it. It was a great starting tractor in the winter time.

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I am a Russian Bot

Posted By: nowaktj
Date Posted: 08 Jun 2017 at 11:12am

Thanks guys...I think I have another head that I will try instead of fixing this one. And...once running I will watch to see if I have a cooling problem for some reason.

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D19D, D17D, WD, WC, Snobee, #83 Plow, SC Blade, 14' disk, 400 series planter, B , Terra Tiger, M Dozer w/Baker Blade, TL-12, 42S Grader, G