turbo orientation

Yeah..... about that vertical shaft orientation.... I'll bet that my old employer spent $300k on trying to make that work. We designed and had cast whole new bearing housings along with having a bunch of internal gubbins machined to try to make that work. It did finally work, but it would wipe out the thrust bearing if you sneezed and getting the oil out of the turbine side (@ the bottom) or at least keeping the oil level below the sealing rings, took a dedicated dry sump suction stage all by itself.