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Allis Chalmers Discussion Forum

WD or WD45?

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Will Herring

05-07-2006 18:46:52

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Which in your opinion is better?

I have a WD... And my grandpa has a WD... And I really like them because they have alot of power and don't burn too much gas and they do all I could ever hope. We both have WDs with crooked gear shifts (the ones that came out right before the 45s).

Just wondering if the WD45 takes much more gas and has alot more power, or am I really not going to get much more than what I've got?

Oh, and I love my tractor.

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Texas Denny

05-08-2006 08:01:24

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Re: WD or WD45? in reply to Will Herring, 05-07-2006 18:46:52

Well, may have to disagree. My records show belt horsepower to be 36 vs 43.1 or about 7 horsepower. I've had one WD, one WD with 4 1/8 high compression cylinders and one WD-45. I only use them for mowing with a shredder and pulling wagons. I've never noticed the horsepower difference. If I were pulling a 2 or three bottom plow or a 10' disk, I'm sure that I would. For light use, the only difference that I have noticed is the transmission. The WD-45 is easier to shift. The fenders are higher on a WD-45 and they usually have larger tires. If you are pulling, the class isn't the same so there isn't an advantage. If you have the 4 1/8 cylinders in either the WD or the 45, there is a pulling advantage.

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John (MO)

05-08-2006 05:55:18

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Re: WD or WD45? in reply to Will Herring, 05-07-2006 18:46:52

There are nine horse power difference between the 2 tractors. Or at least that`s what there would be if both were producing HP like when new. Who know after 50+ years. Also many many WD`s have had the longer throw crank and different pistons put in at overhaul time during all those years. It was very common practice for that to be done back in the 50`s and 60`s when most of these tractors were really used for farming. Since then also, as you won"t find too many that haven`t had a couple overhauls during their life. With a overhaul today, it would be pretty easy to boost a WD up to near 50, and if you`ve got to open the old girl up, why not put some real spunk into her. In summary, I"d never bet more than 1 cold frosty brew on what you`ll find when you look inside a WD engine. Too many options over the years to risk buying some yahoo 2 brews.

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John (MO)

05-08-2006 09:33:24

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Correction in reply to John (MO), 05-08-2006 05:55:18

7.61 horse power difference at the draw bar according to factory specs for the gas fueled tractors. 30.23 for the WD and 37.84 for the WD45. That is 25.17% more for the WD45. The WD came from the factory with a 201 cubic inch engine, while the WD45 had 226 cubic inches. It is no real trick to put WD45 parts in a WD block. The Nebraska tractor tests show that the AC WD gets 10.76 horse power hours per gallon of fuel and produces 34.63 maximum brake horse power, while the WD45 gets 11.39 horse power hours per gallon of fuel and produces a maximum brake horse power of 43.21 That is a difference in maximum brake horse power of 8.58 and that is why I initially stated a 9 horse power difference. In any case, the WD45 was able to make more horse power per gallon of fuel than the WD, according to the Nebraska test, when the tractors were new.

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John (C-IL)

05-07-2006 19:44:21

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Re: WD or WD45? in reply to Will Herring, 05-07-2006 18:46:52

If you really like your WD, why not bring the motor up to WD45 specs and you will have the best of both worlds.

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Will Herring

05-07-2006 20:21:01

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Re: WD or WD45? in reply to John (C-IL), 05-07-2006 19:44:21

Wouldn't that be really expensive or hard to do?

I'd rather get a second tractor that was a WD-45... But I like the WD, as I can really handle it and be in control.

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Aaron SEIA

05-08-2006 10:56:23

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Re: WD or WD45? in reply to Will Herring, 05-07-2006 20:21:01

All you need is a WD45 crank and pistons. To do it really right, the carb and air filter. I'd almost bet that your WD has a 45 crank in it anyway. As for handling and being in control, they are basically the same tractor. Same engine block, same frame, rearend, steering, etc, etc. Blindfolded, you'd never know the difference between the 2 unless you had a straight stick WD and the curved 45.
Aaron SEIA

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Will Herring

05-08-2006 14:21:30

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Re: WD or WD45? in reply to Aaron SEIA, 05-08-2006 10:56:23

Well I've driven all 3...

1. Straight stick WD
2. Curved shifter WD
3. Curved shifter WD-45

I thought the first one shifted the best, the second one had alot more power, and the third one was a wide front end and had a lifter on it so I didn't use it for the same things.

I know my grandpa's other tractor was overhauled and pretty much upgraded to WD-45 ability. It has slightly more power.

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wolfman

05-07-2006 19:32:21

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Re: WD or WD45? in reply to Will Herring, 05-07-2006 18:46:52

34 hp vs 43. Big difference. With the crater pistons & higher compression, the 45 engine is more efficient-much more work done per gallon.

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Will Herring

05-07-2006 20:20:06

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Re: WD or WD45? in reply to wolfman, 05-07-2006 19:32:21

Oh wow... That is quite a bit of pulling distance.

But I estimate that my WD only uses about 2 gallons of gas per hour if not in a hard pull (like plowing).

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