Oil Pump

[Eric S]

I have an oil pump on my 56 that is different than the one on the manual.
Mine has an O ring gasket under the cover.
A 4 pointed male star turn in a 5 pointed female star socket that is about 3" diameter.
I would need a replacement gasket but can find only flat paper gaskets.
Anyone knows this variant of oil pump?
(May be able to shoot a picture tomorrow)

Eric

[simplyconnected]

First, we're talking about a Y-block with an external oil pump. The pickup tube passes through the side of your oil pan. I think you are describing the pump rotors (inside the pump). This pump has not changed and has serviced all the Y-block engines without variation. There is a paper gasket and a neoprene seal as shown in the following Rockauto.com illustration. I would love to see your pictures if they are different. - Dave

[Eric S]

Here are the open/closed pictures of the oil pump. It's a different unit.
The side on the bloc is held with 3 bolts and may use the same paper gasket but the cover is different.

[simplyconnected]

Eric, as I suspected, you have taken the bottom plate off of your pump. The 'O' ring is correct because both rotors operate against the hardened and ground bottom plate. When you buy a new oil pump, all those internal components are included and bolted together (not taken apart as you have). There are only three mounting bolts, a gasket for the block and a neoprene rubber seal for the pickup arm that extends into your oil pan.

Again, your oil pump is no different from all the Y-block oil pumps. In the old days, some mechanics bought just the rotors, to save money. Now, the entire pump is sold as a unit. Oil pumps wear out because filtration comes AFTER the pump.

Any particles that fit through the pickup screen will be mulched in the oil pump rotors before they get to the filter. I've seen metal embedded in the rotors. I've also seen twisted intermediate shafts from debris that stopped the pump. Clean your engine and oil pan before installing a new pump because back in 1956, there was no such thing as 'detergent oil'. Consequently, crud stuck to the engine internals. - Dave

[paul274854]

There were two different oil pumps over the life of the Yblocks. I do not know what years were what, but they were inter-changable

[Eric S]

Thank you
I do not plan to change the pump. I just need to replace this O ring that I do not fi.d with vendors. Made me curious. I can however source it locally in case I can not get it from usual sources.

Eric

[simplyconnected]

Eric S, that 'O' ring is nothing special. Take the old one to an auto parts store. They have replacements over the counter. It is very unusual that your 'O' Ring failed because it never moves. If the new ring doesn't stay in place, use bearing grease to hold it in the groove until you bolt the bottom plate in.

A very long time ago, Ford used a 'spur gear' type of pump. Nobody carries it and for good reason. Ford replaced that pump with a 'gear-rotor' type as shown in the pictures in this thread.
Melling makes a standard pump (M-42) but Rockauto has a better price for the SEALED POWER 22441123 ($84.79). It conveniently fits all Y-blocks in Ford, Mercury, Edsel and Lincoln cars and Ford trucks.

[jopizz]

This is the o-ring you need if you can't find it locally.

https://www.npdlink.com/product/gasket-oil-pump-plate-rotor-type-b6q-6619-a/140322

John

[Eric S]

Sorry for the bad picture but here is the pump and the gasket. This is well the gasket John pointed out.