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Allis Chalmers Discussion Forum

WD45 D17 engine swap

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Author  [Modern View]

08-11-2019 15:14:34

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How hard is it to put a D17 engine in a WD45. What does it entail. Also With the extra 10-12 HP at the drawbar would it then be able to pull a AC 4 14" snap coupler plow easily?

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08-13-2019 05:22:30

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 Re: WD45 D17 engine swap in reply to AdamEichele, 08-11-2019 15:14:34  
If you were plowing 5 inches deep (48" cut X 5 inches deep = 240 cubic inches) and he was plowing 4 inches deep (56 inch cut X 4 inches deep = 224 cubic inches) you were moving more dirt than he was.

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Alvin 41

08-12-2019 15:16:38

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 Re: WD45 D17 engine swap in reply to AdamEichele, 08-11-2019 15:14:34  

just a recollection. About 1961 neighbors were plowing to help out a sick neighbor and I had a D-17 with mounted 3-16 and was following a WD-45 with a semi mount 4-14 and he was going as fast as I was . I know he had some shallow ground on his farm and tended to plow shallower than most.

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08-11-2019 18:53:07

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 Re: WD45 D17 engine swap in reply to AdamEichele, 08-11-2019 15:14:34  
Or find a WD-45 diesel rear end, which is 15% slower just like the D-17 is.

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08-11-2019 18:40:34

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 Re: WD45 D17 engine swap in reply to AdamEichele, 08-11-2019 15:14:34  
Thanks for the info Dr. Allis. Just trying to find a way to beef a WD45 up. Interesting fact on the 15% slower speed. I suppose Bigger tire size would be a bigger drawback going from 13.6X28 to 16.9X28. Guess the real answer is to buy a D17. Thanks

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Traditional Farmer

08-12-2019 06:06:02

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 Re: WD45 D17 engine swap in reply to AdamEichele, 08-11-2019 18:40:34  
Buying a D17 would be the best in the long run,you'd get 4 more gears and a nicer tractor to operate.D17 tractors running and operating bring under $2000 in my area plus you'd still have
your WD45 and it'll cost some money to swap the engines out.

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08-11-2019 17:07:21

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 Re: WD45 D17 engine swap in reply to AdamEichele, 08-11-2019 15:14:34  
Let's give you some facts to consider. A D-17 gas engine (G-226) is only 5 more HP at the same RPM (1400)that a WD-45 (W-226) operates at. If you increase the RPM to that of a D-17 (1650), you have 8 more HP, making it 13 more HP than a WD-45. Increasing the engine speed to that of a D-17 also makes 2nd gear (and all gears) faster, which makes pulling the plow faster more difficult. That is why a D-17 has a ring and pinion gear that is 15% SLOWER, which offsets the increase in engine speed. So, yes, the D-17 power plant will pull that plow better than a WD-45 would, but not as easily as a true D-17 tractor, or a WD-45 with a slower D-17 ring and pinion installed in it. To set the D-17's rated HP at 53 instead of 56 HP (13 more than a WD-45) you must consider the D-17 at Nebraska Test had power steering on it (3 HP loss) and the WD-45 didn't. The engine swap requires the use of WD-45 flywheel, clutch, water pump and crank pulley to be used at a minimum.

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