HD-11 cylinder head issues...
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=171846
Printed Date: 28 Apr 2024 at 1:24pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: HD-11 cylinder head issues...
Posted By: 05ecofire
Subject: HD-11 cylinder head issues...
Date Posted: 08 Jun 2020 at 2:31pm
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I recently bought a 1960 HD11 that has been setting in the woods for about 20 years. Tractor number HD11E-6031 engine serial# 11-605. I tore the engine apart to free seized pistons. After freeing engine and prepping for reinstalling the top end. While cleaning cylinder head I found some large craters in between the valves. The do not look like a typical crack.I have never seen anything like them before (see attached. Was hoping someone could give me some advice on what the heck it is and where to go from here. Also does anyone know what material exactly the head is made out of. Trying to see if its possible to repair. Thank you for all the help uploads/21093/Screenshot_20200608-152243_Gallery.jpg" rel="nofollow - Screenshot_20200608-152243_Gallery.jpg uploads/21093/Screenshot_20200608-152258_Gallery.jpg" rel="nofollow - Screenshot_20200608-152258_Gallery.jpg uploads/21093/Screenshot_20200608-152324_Gallery.jpg" rel="nofollow - Screenshot_20200608-152324_Gallery.jpg uploads/21093/Screenshot_20200608-152336_Gallery.jpg" rel="nofollow - Screenshot_20200608-152336_Gallery.jpg |
Replies:
Posted By: gandl2123
Date Posted: 06 Oct 2022 at 10:31am
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That almost to me looks like it was designed that way. If it has that on every cylinder it would be by the factory for some reason. I'm in the market and looking for a 74320689 Cylinder head for my 11000 series HD11EP Dozer. Tks Greg |
Posted By: DMiller
Date Posted: 06 Oct 2022 at 1:15pm
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Appears to me as previous repairs, Peened in spots, welded others. Check with Chapin Cyl Head, Chapin IL as they could lead you on the right path here. http://www.chapincylinderhead.com/" rel="nofollow - Chapin Cylinder Head and Block, Inc. | Chapin, IL 62628
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Posted By: Doughd16b
Date Posted: 06 Oct 2022 at 2:50pm
| I have a complete engine minus the injection pump out of an 11ep. located in eastern NC 252 916 2927 |
Posted By: doctorcorey
Date Posted: 06 Oct 2022 at 10:09pm
Looks like old crack welds, the grooves are probably leak areas that eroded from 'blowtorch' effect. Curious, what did the valve faces look like? ------------- Semper Fi USMC 1958 HD6G, 1959 MF 203 loader, 1960 Case 420B Backhoe, MF 65 Tractor/Loader Diesel |