I've been looking for Water Pumps for a 8CM Flathead...I've contacted Speedway Motors and Flatattack Racing...Both Shops Dont have a Pump especifically for Mercuries..They say their Water Pumps dont fit the 8CM...Since the water pumps also act as the motor mount supports they say Mercury pumps are different in the placement of the mounts...Since all 49/53 engines Mercury or Ford are the same externally...I was thinking if only making a spacer to go between the bottom of the pump and the ch***is would solve the problem...Anyone already did that?...Or have any other suggestions?
There are 4 threaded holes on the front of the engine, right inside of the water pumps, 2 on each side. If you can make a bracket/motormounts off these holes, (kinda like the one lotsa early chevy v8's use) than the waterpump idea will not need to double as your motormount. I kinda overbuilt this one after seeing what the early '32+ mounts look like, they are just "L" shaped and don't connect side to side. but then you can cut the (or don't use) the motormount on the waterpumps off. Why? TP
Another choice would be to get a set of used Water Pumps for the 8CM Flathead and send them to Skip Haney in florida to have them rebuilt with all the modern conveniences. Do a search here or on Fordbarn for his contact information.
Great Guys!!! Very useful information...that's exactly the kind of stuff I was looking for...Thanks a lot!!!
Another thing...mounting leg is lower but similar on readily available '49 truck pumps. Merc leg is higher...but uses a spacer! Would a truck pump be close to fitting the Merc frame if you unbolted those spacers?? Don't know, never owned a Merc. I ***ume you have the '49-50 with fat fanbelts...those have been rare for a while. I think all insides are the same, so you can buy kits or transfer parts from complete pumps of other types if you have Merc castings.
From Spring to Autumn, I use straight water, a wetting agent, and a corrosion inhibitor. In the winter, I use an anti-freeze mixture appropriate for my expected temperatures.
Im having some problems to get a new pair of water pumps for my 1951 Mercury...It brings a stock 8CM Flathead...So Im thinking about remanufacturing my old pair...I have some doubts yet... There are castings in my pumps - 0CM 8503(driver side) and 0CM 8504(p***enger side) -And acording to a schematic I have it should be 0CM 8501(driver side) and 0CM 8502(p***enger side) -Why? Maybe because mine is a Canadian Merc, made in Windsor/Ontario? Here I sent you the schematic I have...
Yep. those are not worth fixing. I'll check my parts and get back to you tomorrow. I have a lot of Merc pumps. What is the width of the pulley for the belt? Some pictures look like wide belt and some look narrow. Can't tell for sure from your pictures.
I believe the correct belt is the narrow one...I guess the guy who sold me the car put a wrong part just to have it complete...but it is wrong...In the schematic I have over here it says "NARROW BELT"...In the way it came in my car, when I bought it, was one pump narrow and the another one wide belt....as you can see in the pictures here...
yea, check you width of you pulleys, they dont look the same. and find some better bodies to rebuild with the high flow
These pumps here look remanufactured in a interesting way...looks like the bodies were not in very good shape and they used that black ring to complete the part of the body wich was in bad shape...
Seems like you could braze a piece of tubing onto the ends if you're desperate. Weren't some Ford parts made in Argentina? TP
hehehehehhe...There are parts over here too...We have Ford here since 1919...A lot of spare parts...But 8CM Flatheads and its water pumps are not that ordinary...Even outside Brazil we dont find water pumps for 8CM easyly...I tried Speedway motors, Hot Rod Company, FlatheadJack...None of them have it!
Ive got a pair of those Merc pumps (wide belt) from a 49 or 50 8CM the engine was installed into a 50 F-1 truck and the farmer who did the swap just drilled a hole through a 4x4 block of wood and installed it that way using some very long bolts. Rather than swapping the pumps for a pair of truck ones. I have yet to purchase the rebuild kits, anyone know how much Skip charges to rebuild them? thanks
By the way Im posting some pics and stuff about early days of Ford Brazilian Branch here...take a look http://www.jalopyjournal.com/forum/showthread.php?t=455107
One of the pulley sheaves in the pictures with old pumps looks to be from the earlier 1946 through 1948 59A engine pump or even a pre-war 21A pump but the body is Mercury. I'd definitely look for either some better re-buildable cores or some rebuilt units for outright purchase to replace those. In the picture of the restored engine/pumps, they definitely show signs of repair plus they are wide pulley pumps. There is also a wide sheave crankshaft pulley on there too. The early 1949 Mercury used wide belt pumps and the late 1949 through 1951 used the narrow belt pumps. If you have a narrow pulley on the generator and the fan, then you will need narrow belt pumps and a narrow belt crankshaft pulley. Rebuild kits for all 8BA/8CM flathead motors use either the bushing type kit for early models (1948 truck/1949 car & truck wide sheave) or the bearing type kit for the later models through 1953/54 Canadan (narrow sheave). You just have to be really carefull about removal of the pulley during rebuild. Ford had special tooling to remove the pulleys and rebuilders made there own pressing tools. The bell shaped wide sheave truck pulleys will break pretty easy if too much pressure is applied to the outer rim. The Mercury narrow belt pulleys, maybe not as bad but may bend or deform with too much pressure. I think narrow crankshaft pulleys can still be purchased new. You might Check C&G or MACs since Ford cars and late flathead trucks all used the narrow sheave crankshaft pulleys. I own a 1951 Mercury so I look for narrow sheave pumps from time to time. I see them on E-pay and some are even available through local auto parts stores here in the states but you have to have a return core or they will quit rebuilding them.
there is a guy in phoenix arizona usa that rebuilds oddball waterpumps. you might try contacting him. his phone is 623-205-4482 after 3:30 arizona time his email is waterpumprebuilder@gmail.com
Looking again to the schematic I guess I understood it better... The castings I mentioned before 0CM 8503 and 0CM 8504 there I have in my pumps are just for the bodies...As you can see in the schematic...The body, the pulley sheaves and the other parts all have numbers...The pumps have the general number 0CM 8501 and 0CM 8502...but the other parts all have numbers of their own...
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