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HD-11 cylinder head issues...
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05ecofire View Drop Down
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Joined: 17 May 2020
Location: WV
Points: 26 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 05ecofire Quote  Post ReplyReply Direct Link To This Post Topic: HD-11 cylinder head issues...
    Posted: 08 Jun 2020 at 2:31pm
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
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Edited by 05ecofire - 08 Jun 2020 at 2:33pm
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gandl2123 View Drop Down
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Joined: 06 Oct 2022
Location: Augusta, GA
Points: 1 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gandl2123 Quote  Post ReplyReply Direct Link To This Post Posted: 06 Oct 2022 at 10:31am
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
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DMiller View Drop Down
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 31067 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DMiller Quote  Post ReplyReply Direct Link To This Post Posted: 06 Oct 2022 at 1:15pm
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.
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Doughd16b View Drop Down
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Joined: 01 Sep 2022
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Points: 28 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Doughd16b Quote  Post ReplyReply Direct Link To This Post 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
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doctorcorey View Drop Down
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Joined: 17 Jul 2011
Location: S. KC Missouri
Points: 589 		Post Options Post Options   Thanks (0) Thanks(0)   Quote doctorcorey Quote  Post ReplyReply Direct Link To This Post 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?Tongue
Semper Fi USMC    1958 HD6G, 1959 MF 203 loader, 1960 Case 420B Backhoe, MF 65 Tractor/Loader Diesel
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