As a matter of interest, what oilway configuration is adopted within the b.e. for racing with jet feed? Are the drillings in the conrod retained? Is a trench across the top of the bearing as original mid 1930s retained? Is a pocket provided at the dividing line?
Long ago, after reading of the bad effect of interruptions in bearings where heavily loaded, I dispensed with both drillings and trench. Seemed OK to medium rpm. However the oil spray must be very dispersed and probably considerable enters via the drillings.
Has anyone fitted a window to a scrap crankcase and attempted to observe the spray?

The flycut machining of the original crank pockets seems curious. I wondered if it was to avoid a trapped cushion of air. But the success of Phoenix style pockets and the Villiers mod to a Bugatti seems to dispel that notion.

Location: Auckland, NZ

Don't bother fitting a window in the crankcase in an attempt to observe oil spray, you won't see anything Bob. Some of the early Doxford marine engines with a top speed of about 120 RPM had windows in the crankcase with internal lights and you could see what was going on at 30 RPM. However there was so much oil flying around at 50 RPM you couldn't see anything.