Another IMS bearing thread

[BYprodriver]

Originally Posted by Jamesp

Jake, I always go to the big knobs on a system. For windage I look at the crank/ piston/rod bearings as the main movers of air in the crankcase and for splashing/foaming oil. Add timing chains for splashing/foaming oil to the preceding and that's about it. Any other items appear to be second or third order effects. What am I missing?

I'm thinking the pressure relief holes in your IMS are functioning like carb jets made to atomize & aerate fluids.