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Old 03-14-2019, 09:48 AM   #20
PaulE
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Join Date: Jan 2014
Location: New Jersey
Posts: 1,631
Quote:
Originally Posted by tzincp View Post
Why left sweepers specifically?
Is there something in the design of the oil sump that causes this?
I was under the impression that the pickup is in the middle of the sump directly under the intermediate shaft?
I'm no expert on this, isn't it also due to the location of the oil scavenge pumps in the cylinder heads. The M96 uses the same cylinder casting on both sides. They're not interchangeable though because there is some different machining on each side for something. So the timing chain for one side of the engine is on the front - where the serpentine belt, etc. is located and the timing chain for the other side is on the back - where the flywheel is. Inside each cylinder head is a scavenge pump, and on one side it's in the front and on the other side it's in the rear. Those left sweepers can cause the oil to move by centrifugal force away from the scavenge pump in one of the cylinder heads - or maybe the asymmetrical nature affects both scavenge pumps on left handers, there doesn't appear to be an issue with right sweepers.

Last edited by PaulE; 03-14-2019 at 09:50 AM.
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