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Ok I was ignoring the fact that the IMS is in the sump so that makes sense. Crank journal and big end rod bearings are what I was thinking of that need the constant feed of oil under pressure. While Porsche decided to go with the grease packed sealed bearing at the flywheel engine and there is no internal oil gallery there, I don't see why they couldn't have put in a galley and a journal bearing, it is right below the crankshaft's rear main bearing. They had no problem getting an oil galley to the journal bearing on the front of the IMS. PS, I am sick of the IMSB too, having had
a preemptively installed ceramic one fail and going through a rebuild!
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