I have a 1950 Mercury V8 Flathead. Its going in an aftermarket '32 frame. I want to replace the original water pumps and it looks like the ones to use are the 49-53 truck pumps. The Mercury pulleys are a narrow 2 belt set up. The truck pumps are a 5/8" wide belt set up. Can anyone out there give me some guidance on what they used for a pulley set up with the 5/8 belts? According to some people on the HAMB the 5/8" one belt set up is the way to go. But I dont see how that would work unless I run the fan off the top alternator/generator. Right now the fan runs from the middle pulley. I thought about having the stock Mercury pumps rebuilt, but I used a late Ford block with water pumps that had the 5/8 pulleys. So my motor mounts are all set up for the truck pump spacing. The Mercury spacing is a little wider than the Ford an the Merc pumps would need a spacer between the motor mounts and the pumps. I got the Mercury engine after I did the mock up.... Any assistance and pictures would be most appreciated. Thanks
Thanks, I picked some up tonight. I think that will be the easier way out. I found some pictures on the internet tonight showing the spacers. It looks a little funky sitting up like that. Rather than flush with just rubber biscuits.
These are photos of 1953 FORD engine in a 40 Ford using 5/8 wide Ford truck water pumps with no spacers under the biscuits. I do not know if spacers are needed in a 32 Ford. There are two belts. One runs off the crank pulley to the fan pulley. The other operates the alternator, water pumps and runs off the crank pulley. The crank pulley is a wide belt 2 sheave FORD TRUCK pulley . You can also use the wide belt Merc pulley.
Ford, Ford trucks and commercials, and Mercs all had wide pulleys up through about the end of the 1949 model year, commercials and trucks only kept them through 1952. Mercs 1949-51 all had that raised mount pad but the car came with a spacer that at least approximately made them the same total mount package as the truck...no idea why. Seems like they both could have been designed for the same pump. There are at least 2 different diameters for the wide gen pulley. Some crank pulleys in both wide and narrow have the spiral-grooved part that goes under the seal made as an extra piece, the majority have that sleeve formed integral with the pulley. You need to be aware of that...I learned about it in blood and darkness long ago. Many cranks you find will still have that extra part on the snout, leading to great unhappiness when you try to install a long pulley on an assembled engine...
Thanks 19Forty. That looks like the set up that I need to run. Where did you get those pulleys? The alternator looks straightforward. Where do I hunt for the fan and crank pulleys? I dont seem them in catalogs, Speedway etc. Maybe someone out there has some laying around that i can buy from them. Using the truck pumps would make my life easier. Just gotta figure out the pulleys. Thanks!
You can change the pulleys on the water pumps if the Merc pulley shaft is 5/8 inch then they can be pressed onto the F-1 pumps. Or your can buy replacement thin belt pulleys form Joblot and press those onto the F-1 shaft. That's what I do all the time to make thin belts assembly's using the F-1 pump. Ronnieroadster
Here's a bunch of info that may be of some help. Be sure and read it all. I bet these guys can help you. The crank pulley is available on ebaymotors.com. http://www.ebay.com/sch/6000/i.html?_nkw=flathead+crank+pulley&_vxp=mtr&_rdc=2 Flathead Jack also has them. http://flatheadjack.com/catindex.html The fan carrier pulley set up you see in the photos is one I made. But the entire fan pulley set up off an early Ford pick up or 49-50 Merc may also work. ronnieroadster's idea about pressing on new thin belt pulleys is worth exploring also. Another solution to your problem may be to adapt a 1940 Ford fan carrier pulley to the 8BA crankshaft. I am not exactly sure how it's done, but i know I have seen it posted on either Fordbarn and HAMB. Read all of this thread and contact "straightpipes"; http://fordbarn.com/forum/showthread.php?t=7105&highlight=41+ford+fan+pulley Also, read this: http://www.flatheadv8.org/Waterpump/pump.htm Then read all the threads on this link; http://www.jalopyjournal.com/forum/search.php?searchid=7035059 This deals with your problem: http://fordbarn.com/forum/showthread.php?t=22608&highlight=fan+pulley+crankshaft Lots more help here: http://fordbarn.com/forum/showthread.php?t=7105&highlight=fan+pulley+crankshaft
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