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Old 06-01-2006, 05:56 AM   #1 (permalink)
Join Date: Jun 2006
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Tricky Dave is on a distinguished road
M50 Dry Sump Plumbing


I'm plumbing a dry sump system into my M50 engine, and after first test have very low oil pressure.

As you look at the engine block where the oil filter housing fits it, there are three oil 'chambers'.

The bottom of these I'm pretty sure is where the oil supply from the wet sump pump feeds the filter, I have blocked this to prevent oil dropping stright back into the sump, and fed the dry sump pressure into this chamber.

The top one I assume feeds the engine, so I'm leaving well alone.

I think the middle one is a return to the pressure relief valve, but it seems to feed something else on the way - when the girlfriend poured oil into this while I was under the car, it came out above the crank, which I wasn't expecting (got covered in oil). I assume this means I can't block this at the filter housing chamber. So... Do I block this where it would connect to the old pump / relief valve? Or is it fine to block it at the filter housing end of things?

Any advice on this much appreciated!

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