Engine ID please

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Several years ago, maybe 10, I became the owner of a WD-45 with a replacement motor of some sort; a someday project.  It must be higher displacement or higher compression than a stock motor since the 12 volt battery I use on the other WD-45 and WD won't turn it over. A bigger battery works OK. Motor spins freely with the starter when the plugs out. It ran fine when I got it but had a bigger battery. Someone previously cut the battery box to accommodate a larger battery. I don't think I have a ground problem.     The left side of the block has "G7L" cast into it and the right side is marked "AM-3858-2" with a "3" beneath. Does anyone know if this tells what the motor is or know where I can find the information to find out? 
     I think it may be about time to dig this tractor out of the shed and get it going again.
     Many Thanks for any help. Russell.

     Many thanks for any help.   

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ac hunter Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 05 Jan 2011 Location: OHIO Points: 1051	Post Options Post Reply Quote ac hunter Report Post Thanks(0) Quote Reply Topic: Engine ID please Posted: 12 Oct 2019 at 7:37am
	Several years ago, maybe 10, I became the owner of a WD-45 with a replacement motor of some sort; a someday project. It must be higher displacement or higher compression than a stock motor since the 12 volt battery I use on the other WD-45 and WD won't turn it over. A bigger battery works OK. Motor spins freely with the starter when the plugs out. It ran fine when I got it but had a bigger battery. Someone previously cut the battery box to accommodate a larger battery. I don't think I have a ground problem. The left side of the block has "G7L" cast into it and the right side is marked "AM-3858-2" with a "3" beneath. Does anyone know if this tells what the motor is or know where I can find the information to find out? I think it may be about time to dig this tractor out of the shed and get it going again. Many Thanks for any help. Russell. Many thanks for any help.

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DaveKamp Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Apr 2010 Location: LeClaire, Ia Points: 6069	Post Options Post Reply Quote DaveKamp Report Post Thanks(0) Quote Reply Posted: 12 Oct 2019 at 9:55am
	Back up a couple feet, Russ, take another picture of it from each side, so we can see it's external features, head/valve cover, etc...
	Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.

CTuckerNWIL Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: NW Illinois Points: 22825	Post Options Post Reply Quote CTuckerNWIL Report Post Thanks(0) Quote Reply Posted: 12 Oct 2019 at 5:47pm
	While you're out there taking pictures from a ways back, look for the engine number It will be STAMPED on the block, not cast like these casting numbers.
	http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF

ac hunter Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 05 Jan 2011 Location: OHIO Points: 1051	Post Options Post Reply Quote ac hunter Report Post Thanks(0) Quote Reply Posted: 12 Oct 2019 at 8:31pm
	Thanks, I'll work on some more info tomorrow.

DrAllis Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Points: 21905	Post Options Post Reply Quote DrAllis Report Post Thanks(0) Quote Reply Posted: 12 Oct 2019 at 9:16pm
	Look directly behind the air cleaner to carburetor hose and you will see a serial number stamped on the block. It will be W-xxxxxx (WC/WD engine) or 45-xxxxxx (WD45 engine) or 17-xxxxxx ( a D-17 engine). Edited by DrAllis - 12 Oct 2019 at 9:19pm