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MG MG Y Type - Oil Pump Suction Connection

I am presently restoring my 1949 MGYT EXU 3285 with a XPAG/TL/12975 engine.
It appears to have a Type 4 oil pump with an oil filter conversion, image one. There is no connecting tubing from the sump to the pump and the flange outlet is blocked with a nut, image two. This outlet is connected to the oil pick-up assemply inside the sump. There is no other connection from the sump to the oil pump. How then is the pump receiving oil from the sump?




E. Geissler

From the oil pickup inside the sump,there is a pipe to side of the sump(held on to the sump by the 2 bolts you can see in your image 2)The oil then goes through a internal drilling (passageway)to a corresponding internal passageway in the block. There is no external pipe from the sump to the pump.
R E J Stewart

Further to my comment above,when you put the sump on, you must make sure you put the gasket on the correct way.The gasket is in 2 halfs, 1 half has a corresponding hole for the oil passageway,the other half does not have a hole. If you put the wrong half on the wrong side,it blocks up the oil passageway, stopping oil from getting to the pump.
R E J Stewart

Mr. Stewart,
Thank you so much for explaning the path that the oil takes fom the sump to the filter. I immediate went to the preassembly photos and that pathway is clearly visible above the flange on the sump surface.
As you mentioned I was very careful to install the gasket the correct way.

Cheers
Ed

E. Geissler

Hi Ed

I presume before you fitted the sump you installed the strainer inside the sump and to the side of the sump wall? It would be similar to this https://mgbits.com/contents/en-uk/p2449_Oil-Pick-Up-assembly-(Side).html

It is essential that you also fitted a nice clean new gasket (https://mgbits.com/contents/en-uk/p4174_Gasket-Oil-Pick-Up.html) and that both surfaces are clean and level.

Paul
Paul Barrow

Paul

You presume correctly.

Ed
E. Geissler

Good job Ed - you never can be too certain when people are doing a job and I prefer to be over cautious than assume anything.

Paul
Paul Barrow

This thread was discussed between 04/02/2025 and 06/02/2025

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