1941 Merc Pulley

Trelpdx

Trelpdx

Senior Member
Guys,


I'm dropping my Dad's 41 Merc engine into a 33 Pickup. Missing the crank pulley. Will be using the fan mounted to the generator so don't need the flange on the crank pulley. I know I want a single groove fat belt, but don't know what years will fit in either Ford or Mercury. The shaft measures 1-5/16" OD. Thanks for any help.
 
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Trelpdx, This doesn't solve your problem, but I thought that I would show Ford Barners pictures of the Engine and Radiator from a 1941 Mercury. The Radiator on this model Mercury is certainly different from the normal Ford Radiators. Check out the Extensions for the Bottom Radiator Hoses. Very unusual.
 
Any early style flanged, double sheeve or non flanged single sheeve will bolt on and line up with pumps and generator.
Just measure diameter of the hole to fit your engine...early 21 stud has a smaller diameter shaft.
Finding a double sheeve might be easiest then just cut the outer sheeve off in a lathe.
 
The later engines after 1938 started to use the long snout type crankshafts. Those early engines used the short snout type so they had their own pulley sheave. The previous mention of using a later dual sheave pulley (one for fan) and removing the front fan sheave is a good one. I imagine the crankshaft fan mount type sheave may also be modified to work if you have the one from the Mercury application. The real early set ups from 32 thru 36 didn't have the water pumps down low so they just had mounts bolted on. Since you will be using the 1937 or later pumps then it may need adapters to mount to the frame in the stock location. I believe that these are reproduced and available but times change so I don't know for certain.
 
Thanks guys, so what I think I'm hearing is that I can go with Ford or Mercury 1939 and newer and they will fit my shaft (1-5/16"). Do I have it correct?
 
1939 Deluxe up to 1948. The crank driven fan was 39 Deluxe thru the 1941 models. The 1942 models had the belt driven fan which carried on through 1948. None of the 8BA era sheaves will work. due to the change in water pumps. The new load-o-matic distributor location made that a necessity. The 8BA type long snout crankshaft can be used in the early motors that have the long snout but some of the older engines require mods for them to fit the block.
 
mercman from oz said:
371281


371280

Trelpdx, This doesn't solve your problem, but I thought that I would show Ford Barners pictures of the Engine and Radiator from a 1941 Mercury. The Radiator on this model Mercury is certainly different from the normal Ford Radiators. Check out the Extensions for the Bottom Radiator Hoses. Very unusual.
Click to expand...

That appears to be a 60HP radiator that someone installed in that car and modified the lower hoses to fit.
 
Thanks guys, I'll look for 39 deluxe to 48 pulley. If I don't want the 39-41 flange then I'm into the 59A pulley 45-48, correct?
 
It was actually the 21A-6312-A from 1942 that carried through till 1948. You can use the one with the fan mount flange if you want. You just don't put the fan on there. It can be cut down too but there is not as much to cut from it.
 
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