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Allis Chalmers Discussion Forum


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youg gun

09-01-2007 15:18:07

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whats the difference between the wd and the wd45 and how can i tell??

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carl ac man

09-08-2007 19:13:55

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 Re: wd,wd45 in reply to youg gun, 09-01-2007 15:18:07  
the head look at the head on ur engine prodominatly the head on a wd is only 3 inches tall and a wd has a straight up and down shifter but to throw a wrench in things some wd's have athe 4 inch head that the wd45's had and the curved shifter like the wd45's so then you can figure out if it is a wd by the plate on the side of the block mentioned previous

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09-03-2007 07:13:34

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 Re: wd,wd45 in reply to youg gun, 09-01-2007 15:18:07  
The biggest difference is the the '45 has a larger and more powerful engine. I think in rough terms the WD was about 38-40 HP and the WD-45 was between 45 and 50 HP.

Pretty much the same Engine but Allis increased the displacement in the '45 with either a larger bore or a longer stroke, and maybe both. My memory fails me on the details.

Spent a lot of time on both tractors as a youngster and you will defeinitely notice the difference between the two if you're doing heavy work.


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09-01-2007 19:23:56

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 Re: wd,wd45 in reply to youg gun, 09-01-2007 15:18:07  
check side of engine below sparkplugs. wd will have a bolt-on plate covering the side of the block. check engine serial #, if it starts with wd then it is a wd if it starts with 45 then it is a wd45

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