I have two 4 Cyl water pumps on the shelf for 20+ years. In my mind, they were both spares for my '25 back then. I finally pulled them down to look at them, and they are different from each other. I am not sure what I even have any longer. I studied the Master Parts Book, which has left me more confused than I was!
In both cases, they turn freely but fairly tight. One is pretty nice, says 341218 on the pulley. Cast in the body is 341221, and it has a short straight outlet pipe. It is the most like I remember my 1925 pump. Photo below -
The other is a very similar body, with a much longer outlet pipe, and the number I find on it is 346707-29. It even has a bowtie on it. The impeller has a chunk missing, though. This one still has the original grease cup on it.
They both still have a 4 blade fan with them, and one is slightly larger than the other. The larger one is 17" at the greatest dimension, and the other is 15-3/4". I assume the 4 blades are from trucks, and were installed on these water pumps for better cooling long ago?
Can anyone identify these water pumps better for me? I want to sell them and get them into the hands of someone that can make use of them, but obviously need to have a better idea of what they are correct for. Many thanks! Photo of fans below.