RoadMoyer wrote: ↑Sun Apr 30, 2023 10:43 pm
Thanks! We pulled apart the fan tonight and cleaned/inspected it and all the fan blades are tight. I’ll add that to my list of things to watch. It did have wood cut around the pedals when we started, so they must’ve taken care of that.
I think the radiator is as you describe best I can tell. Here’s the best photo I could take.
Thanks!
Steve
Steve, if authenticity isn't important to you, you might get by with using the fan assembly that you show in the photo, however the fan assembly that your engine has is NOT only pre-1926, it IS pre-1920. The fan you show has four fan blades riveted to the front of the pulley. The pulley you have is probably steel. The same type fan and pulley was used as far back as possibly 1909. The earliest years used a brass pulley. Later years switched to a steel pulley. This was used (with a fan arm) through 1919-20. In 1920, Ford increased the diameter of the pulley and switched to a pressed steel fan blade assembly which fastened to the front of the new larger pulley, made of aluminum, with four machine screws. If you are "dead set" on using what you have, assemble the fan on the fan shaft and fan shaft arm to the front timing cover. Move the arm holding the assembly to raise the fan to its highest limit and wrap a string arount the fan pulley and the crankshaft pulley. Then let the arm drop down to its lowest possible position where the fan blades will still clear everything; tighten arm and take another measurement with the string. These two measurements will give you the minimum aqnd maximum length of belt that you can use with that type of fan and pulley.
BE AWARE, That even with the old style fan positioned at its highest point, that you won't get the cooling benefits that the larger pressed steel fan and aluminum pulley will give, because #1 the later pressed steel blade fan is larger in diameter than the earlier riveted blade fan, and #2 the fan arm, even in its highest position will not position the center of the fan as high in back of the radiator as the correct 26-27 water outlet/ fan mount, will. Ford increased the height of the radiator and grill shell in 1923 to provide better cooling, and to take advantage of maximum cooling, the fan needs to be as high as possible in back of the radiator.
I don't know the history of your father's car, and why the engine and transmission were changed, but I'd bet that the reason a water pump was added was because the incorrect fan and fan mount that the engine is using, did not provide maximum cooling. As far as a mismatch of parts go, I ran into a similar situation as yours when my dad and I restored my Grandfather's 27 coupe back in the late 1960's. At some point in my Grandfather's car's history, he let the block and head freeze and crack, and since the rest of the engine and transmission was good, he bought a 1922 bare block from a salvage yard and rebuilt the engine using all the internals and transmission from the original engine. The only exception was the front timing cover and fan bracket. For some unknown reason, he used the timing cover and fan mount bracket from a pre-26 engine. I guess it cooled well enough for him (even without the correct 26-27 water outlet/fan mount), but he did have the advantage of the 1920 and later larger pressed steel fan and pulley to match.