D15 with unknown engine

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   I recently purchased a 1961 D15. Got it home and soon discovered that all is not as it appears. It started when I saw that someone had torched a notch into the front bracket that the engine mounts to. 
Why would anyone do that unless it was not the original engine.
 Then when I went to order a new manifold gasket, a D15 didn't seem correct. The bolt pattern matches that of a B/C/CA pattern, and the manifold itself looks like a B/C/CA but the previous owner had the metal type cups on the manifold that match a WC/WD/WD45 D17 and 170. 
 So I started researching the number cast into the block of the engine, AM 2916 35
This number does not seem to match any B/C/CA numbers as they end in a 30 for 1958.
 There is another number stamped on the flange of the engine where it bolts to the torque housing. CR 50468 PA. I've had no luck researching this number. 
 I've added another photo of the right side of engine to help out.
 Any help I could get on identifying the engine that is in this tractor would be greatly appreciated. I figure it runs so good that I might as well live with it. I'm only going to use to mow and maintain a 4 acre food plot and some trails but want to make sure that when servicing it that I get the correct specs on it.

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CBMike Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 27 Oct 2016 Location: Wisconsin Points: 17	Post Options Post Reply Quote CBMike Report Post Thanks(0) Quote Reply Topic: D15 with unknown engine Posted: 31 Oct 2016 at 5:39pm
	I recently purchased a 1961 D15. Got it home and soon discovered that all is not as it appears. It started when I saw that someone had torched a notch into the front bracket that the engine mounts to. Why would anyone do that unless it was not the original engine. Then when I went to order a new manifold gasket, a D15 didn't seem correct. The bolt pattern matches that of a B/C/CA pattern, and the manifold itself looks like a B/C/CA but the previous owner had the metal type cups on the manifold that match a WC/WD/WD45 D17 and 170. So I started researching the number cast into the block of the engine, AM 2916 35 This number does not seem to match any B/C/CA numbers as they end in a 30 for 1958. There is another number stamped on the flange of the engine where it bolts to the torque housing. CR 50468 PA. I've had no luck researching this number. I've added another photo of the right side of engine to help out. Any help I could get on identifying the engine that is in this tractor would be greatly appreciated. I figure it runs so good that I might as well live with it. I'm only going to use to mow and maintain a 4 acre food plot and some trails but want to make sure that when servicing it that I get the correct specs on it.

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CrestonM Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 08 Sep 2014 Location: Oklahoma Points: 8452	Post Options Post Reply Quote CrestonM Report Post Thanks(0) Quote Reply Posted: 31 Oct 2016 at 5:44pm
	Looks like an earlier engine to me, since it has a mag. But like you say there shouldn't be a torch cut in the bracket. Edited by CrestonM - 31 Oct 2016 at 5:45pm

DennisA (IL) Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Ridott IL. Points: 2064	Post Options Post Reply Quote DennisA (IL) Report Post Thanks(0) Quote Reply Posted: 31 Oct 2016 at 6:01pm
	Engine is out of an "RC" I'm thinking.
	Thanks & God Bless Dennis

Bill Deppe/AC Salvag Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Location: Maquoketa, Iowa Points: 973	Post Options Post Reply Quote Bill Deppe/AC Salvag Report Post Thanks(0) Quote Reply Posted: 31 Oct 2016 at 7:32pm
	My guess is from a B or C model. RC's didn't have the generator bosses. Also not a D series engine due to not have the opening under the magneto area for the power steering pump

DSeries4 Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Ontario, Canada Points: 7451	Post Options Post Reply Quote DSeries4 Report Post Thanks(0) Quote Reply Posted: 31 Oct 2016 at 9:51pm
	No D15s ever had magneto's on them either (except for this one). B and C engines are cheap and plentiful, so that is my guess. Considerably less horsepower too.
	'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '61 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080

WD45Diesel57 Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 20 Jul 2010 Location: Varna, Ont. Can Points: 646	Post Options Post Reply Quote WD45Diesel57 Report Post Thanks(0) Quote Reply Posted: 31 Oct 2016 at 10:11pm
	That is a power unit motor off of a combine or baler, those motor serial numbers start with prefix CR, I have that same motor in my B!
	1-B's, 2-C, 2-CA's,2-WF, 1-WC,1-G, 3-WD's, 2-WD45, 1-RC, 1-D17 Diesel, 1-D14, 2-D15,1-D17 row crop,1-D19 gas and All Crop 40,60,66,72,90 and 100

CBMike Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 27 Oct 2016 Location: Wisconsin Points: 17	Post Options Post Reply Quote CBMike Report Post Thanks(0) Quote Reply Posted: 01 Nov 2016 at 9:59pm
	Do you know what kind of horsepower it is putting out and if i can get a service manual for it?

WD45Diesel57 Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 20 Jul 2010 Location: Varna, Ont. Can Points: 646	Post Options Post Reply Quote WD45Diesel57 Report Post Thanks(0) Quote Reply Posted: 01 Nov 2016 at 10:10pm
	I would say high 20's they rev significantly higher rpms
	1-B's, 2-C, 2-CA's,2-WF, 1-WC,1-G, 3-WD's, 2-WD45, 1-RC, 1-D17 Diesel, 1-D14, 2-D15,1-D17 row crop,1-D19 gas and All Crop 40,60,66,72,90 and 100

Chalmersbob Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Pennsylvania Points: 2122	Post Options Post Reply Quote Chalmersbob Report Post Thanks(0) Quote Reply Posted: 01 Nov 2016 at 10:16pm
	Same engine as on a B, C, or CA. Same service manual. LOL Bob
	4 B's, 1 C's,3 CA's, 2 G's WD, D14, D15, B-1, B10, B12, 712S,

CBMike Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 27 Oct 2016 Location: Wisconsin Points: 17	Post Options Post Reply Quote CBMike Report Post Thanks(0) Quote Reply Posted: 01 Nov 2016 at 10:25pm
	Thank you

Gerald J. Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Hamilton Co, IA Points: 5636	Post Options Post Reply Quote Gerald J. Report Post Thanks(0) Quote Reply Posted: 02 Nov 2016 at 2:04am
	I have an AC G, B, C, and CA shop manual plus a B military manual (possibly IB) hidden on my web server. http://www.geraldj.networkiowa.com/Trees/Allis-Chalmers-G-B-C-C A-Service.pdf http://www.geraldj.networkiowa.com/Trees/BMilitary.pdf Gerald J.

CrestonM Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 08 Sep 2014 Location: Oklahoma Points: 8452	Post Options Post Reply Quote CrestonM Report Post Thanks(0) Quote Reply Posted: 02 Nov 2016 at 7:05am
	If you have the manifold for it it will have a petcock if it's a combine engine.

rpropst Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 19 Jan 2013 Location: NC Points: 279	Post Options Post Reply Quote rpropst Report Post Thanks(0) Quote Reply Posted: 02 Nov 2016 at 8:42am
	It is a B or CA arrow head block \arrow head cast in to block just ahead of the dipstick\ 1951 or later.
	1950 snap coupler B 1948 WD 1951Ca 1952B 1952adjustable axel B

CBMike Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 27 Oct 2016 Location: Wisconsin Points: 17	Post Options Post Reply Quote CBMike Report Post Thanks(0) Quote Reply Posted: 02 Nov 2016 at 10:03pm
	Thank you very much

CBMike Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 27 Oct 2016 Location: Wisconsin Points: 17	Post Options Post Reply Quote CBMike Report Post Thanks(0) Quote Reply Posted: 02 Nov 2016 at 10:04pm
	The manifold does have a petcock on it. Thanks for the info

CBMike Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 27 Oct 2016 Location: Wisconsin Points: 17	Post Options Post Reply Quote CBMike Report Post Thanks(0) Quote Reply Posted: 07 Nov 2016 at 9:34pm
	I'd like to thank everyone for their taking time out to help me with the above post. A special shout out to Gerald J for info manuals. As I continue to clean this machine up, add a part here and there, and some fresh paint, I'm sure I will have more questions.