wd45 engine

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   I have a wd45 that I'm building into a puller. People I talk to say to get a D17 series 3 or 4 engine. I would like to get 90hp. My question is what is the gain with a D17 engine over a wd45 engine? I understand I need bigger pistons, cam, head work ect. My understanding was the wd45 and D17 were pretty much the same, I guess not. Any information will help. Thank you

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hooken allis Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 04 May 2014 Location: Wentzville,MO Points: 15	Post Options Post Reply Quote hooken allis Report Post Thanks(0) Quote Reply Topic: wd45 engine Posted: 27 Jan 2016 at 9:57pm
	I have a wd45 that I'm building into a puller. People I talk to say to get a D17 series 3 or 4 engine. I would like to get 90hp. My question is what is the gain with a D17 engine over a wd45 engine? I understand I need bigger pistons, cam, head work ect. My understanding was the wd45 and D17 were pretty much the same, I guess not. Any information will help. Thank you

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WF owner Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 May 2013 Location: Bombay NY Points: 4667	Post Options Post Reply Quote WF owner Report Post Thanks(0) Quote Reply Posted: 27 Jan 2016 at 10:40pm
	The D-17 (and subsequent) had bigger crankshaft journals/bearings. Other than that, the D-17 engine turned more rpm and (I believe) a different carb. If you can get a cam ground to the same specs as a (gas) 175 cam, get higher compression pistons (stock 8.25/1 or flat top pistons from a 201)and a D-17 governor spring, you should be able to get more horsepower. I'm not sure about 90 hp with out stroking and other EXPENSIVE mods. A combine engine was more horsepower than a tractor engine. Edited by WF owner - 27 Jan 2016 at 10:42pm

Big Orange Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 11 Sep 2009 Points: 313	Post Options Post Reply Quote Big Orange Report Post Thanks(0) Quote Reply Posted: 28 Jan 2016 at 1:22am
	Find set of SP46 M&W pistons for a 201 wc or wd . Machine .250 off the piston head. With a 4.5 stroke, the comp. ratio will be 10:1, high octane gas is a must.

DrAllis Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Points: 20528	Post Options Post Reply Quote DrAllis Report Post Thanks(0) Quote Reply Posted: 28 Jan 2016 at 6:16am
	The Gleaner model "E" combine is 63 flywheel HP as is any D-17 tractor engine at 1650 RPM and have the same size/CFM carburator. The Gleaner model "E-3" and a very few very late model "E"s are higher compression (Z code) and have 67 flywheel HP.

hooken allis Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 04 May 2014 Location: Wentzville,MO Points: 15	Post Options Post Reply Quote hooken allis Report Post Thanks(0) Quote Reply Posted: 28 Jan 2016 at 7:46pm
	Thank you for the good information it will help.

wi50 Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 24 Sep 2010 Location: weegieland Points: 1010	Post Options Post Reply Quote wi50 Report Post Thanks(0) Quote Reply Posted: 28 Jan 2016 at 10:54pm
	A wd45 block is lights than the d17. The d17 and gleaner e engines are going to be a little stronger over time, the center main area is cast stronger, heavier etc. Also the d17/e engines have dowl pinned main caps, which is an advantage. The wd45 has floating main caps that are shimmed, so when I build an engine on an early block I have the block line bored to eliminate the shims and get better contact on the bearing cap. As far as crankshaft strength, the d17 and e engines will have larger main bearings and the cranks are heavier. But are they stronger? That larger mass is working against the laws or physics. If a crankshaft is going to break, it more likely will break in the rod crankpin than breaking in the main. I've used and know of a good many old WD and WC blocks that have taken a lot of punishment for many years that haven't failed. If I was building an engine e for some paced classes I'd just build the wd45. If I were building something for unlimited speed or rpm then the d17 is worth finding. As far as cylinder heads, once I hit them with tooling and the grinder, it makes no difference what one they are.
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