WD-45 Engine serial number

[Farmallhm44]

So I stopped to look at a WD-45 and couldn't find the serial number for the tractor but found what appeared to be one stamped on the engine behind the carburetor. When i looked it up it didn't match anything listed for it. Is what's on the engine more of a code than a serial number? The stamping appeared to read 45-6521-G.

 

[rustred]

The serial number is on the left rear diff housing.

 

[Farmallhm44]

The serial number is on the left rear diff housing.

Thank you! Do you know what the stamping is on the engine?

 

[rustred]

Not sure

 

[Farmallhm44]

Ok

 

[Aaron SEIA]

So I stopped to look at a WD-45 and couldn't find the serial number for the tractor but found what appeared to be one stamped on the engine behind the carburetor. When i looked it up it didn't match anything listed for it. Is what's on the engine more of a code than a serial number? The stamping appeared to read 45-6521-G.

If it was stamped, thats the engine serial number.
AaronSEIA

 

[4wdtom]

So I stopped to look at a WD-45 and couldn't find the serial number for the tractor but found what appeared to be one stamped on the engine behind the carburetor. When i looked it up it didn't match anything listed for it. Is what's on the engine more of a code than a serial number? The stamping appeared to read 45-6521-G.

The 45 refers to it being a 45 engine, no right side panel, 4.5" stroke. The G refers to it being a gas engine as opposed to one with lower compression for "tractor fuel". By this time though it could have been "worked on" and what's inside can't be known for sure.

 

[Farmallhm44]

The 45 refers to it being a 45 engine, no right side panel, 4.5" stroke. The G refers to it being a gas engine as opposed to one with lower compression for "tractor fuel". By this time though it could have been "worked on" and what's inside can't be known for sure.

Thank you!

 

[Farmallhm44]

If it was stamped, thats the engine serial number.
AaronSEIA

Thank you!

 

[DrAllis]

That low of an engine s/n is probably a 1953 year build.

 

[Farmallhm44]

That low of an engine s/n is probably a 1953 year build.

Thank you! I was thinking it might be low but wasn't certain. Is there a separate listing for engine serial numbers?

 

[DrAllis]

An "Official engine serial number chart "? Nope. I just know they made about 15,000 WD-45's in the last 6 months of 1953 and your engine is no where near the 15,000 mark. They start at s/n1001.

 

[Farmallhm44]

An "Official engine serial number chart "? Nope. I just know they made about 15,000 WD-45's in the last 6 months of 1953 and your engine is no where near the 15,000 mark. They start at s/n1001.

Ok. Thank you!

 

[Farmallhm44]

I came across this while I was searching. I thought it might be useful to someone else. It is a correlation listing comparing the engine to the tractor serial number. If you click the link at the top of the page there are more listings for B, C, CA, WC and WD models. Thanks everyone!

AC WD45 Engine to Tractor SN Correlation

 

[DrAllis]

That is only a GUESS chart. I have proven it to be wrong on a couple of occasions by having a tractor in my hands that the engine s/n versus chassis s/n didn't match his chart and I knew the engine was original in mine.

 

[Farmallhm44]

That is only a GUESS chart. I have proven it to be wrong on a couple of occasions by having a tractor in my hands that the engine s/n versus chassis s/n didn't match his chart and I knew the engine was original in mine.

Ok.

 

[Richard Nixon]

So I stopped to look at a WD-45 and couldn't find the serial number for the tractor but found what appeared to be one stamped on the engine behind the carburetor. When i looked it up it didn't match anything listed for it. Is what's on the engine more of a code than a serial number? The stamping appeared to read 45-6521-G.

The serial # will start with WD even if it's a WD45. Might half to scratch a while or use some chalk or pencil lead to read it.

 

[Richard Nixon]

So I stopped to look at a WD-45 and couldn't find the serial number for the tractor but found what appeared to be one stamped on the engine behind the carburetor. When i looked it up it didn't match anything listed for it. Is what's on the engine more of a code than a serial number? The stamping appeared to read 45-6521-G.

It just occurred to me that you might not know very much about Allis Chalmers tractors. Do you know how to tell a WD from a WD45 or from a WC for that matter? They look similar. If not, let us know and we'll be happy to explain the differences.