Difference between WD and WD-45

Troy Schuelke · Apr 11, 2014

I would like to know the difference between a WD and a WD-45 Allis. I know that the HP is a difference, but what outside feature may differ from a WD and a WD-45? Someone said that the cylinder heads are different between the two. I would like to know since I want to buy one someday. Thanks

JMS/.MN · Apr 11, 2014

WD has a 201 cu in block with a 3 inch high head vs 226 cu in block with a 4 inch head in a WD45. WD block has a bolt on plate on right side, WD45 is solid cast. WD45 has a half-inch longer stroke crankshaft with Power Crater, not flat top pistons. WD standard was magneto ignition, WD45 was battery ignition. WD hand clutch had two discs, WD45 had three discs to handle more power, standard rear tires were an inch wider. Straight shifter is a WD, although late 1952, WD had constant mesh transmission with curved shifter. WD45 were all curved shifter. WD45 came out Spring 1053, although some WDs were still built then.

Troy Schuelke · Apr 11, 2014

Where were the bolt on plates located on the right side of the block? I am trying to look at a picture of a WD-45 on the internet for sale trying to pick out the features of a WD-45.

Lonnie Smith · Apr 11, 2014

The plate is behind the oil filter and distributor on the right side.

John Gottlied · Apr 12, 2014

sorry to break your bubble, the bolt on plate is on the left side behind carbuator. later WD"s had snap coupler

Lonnie Smith · Apr 12, 2014

Don't know what kind of of tractors you have but they are not Allis if your plate is behind the carb.

Tramway Guy · Apr 12, 2014

Best way to tell is by serial number. Almost all of these features overlapped at various times. Battery ignition was standard on late WDs. Three disc clutch didn't start until after a few WD45's were built. And even so, there could have been many swaps into either tractor so just because you have a plate on the right side of the engine doesn't mean you don't have 45 internals.

Ted J · Apr 12, 2014

The plate is on the right side as you are sitting on the tractor. It runs the whole length of the block and is about 5" high. Very easy to see. That is by far the biggest give away.

crawlerjohn · Apr 12, 2014

The one on fleabay in KY is a 45.

ACEd · Apr 13, 2014

Plates on left behind carb were most likely a repair for a block cracked due to freezing. The water jackets are known to have a problem there if you let the water freeze. Never that way from factory.

thdrduck · Apr 14, 2014

One difference you can't see but is substantial is that a WD uses first gear for reverse and a 45 uses 2nd. I too have seen a plate used on the left side as a block repair, used with large bolts or threaded rod all the way through the other side to hold the 2 halves together.

Difference between WD and WD-45

Troy Schuelke

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JMS/.MN

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Troy Schuelke

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Lonnie Smith

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John Gottlied

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Lonnie Smith

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Tramway Guy

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Ted J

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ACEd

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