The oil distributor only comes into play when the oil pressure is below 15 PSI if it's working properly. Its function is to direct most or all of the oil flow to the lower end of the engine in hot idle and/or other low oil pressure situations. The rocker arms can survive a lot longer with little or no lubrication, compared to the rod, main, and cam bearings. When the oil pump is supplying sufficient pressure and volume to the rotating assembly, then a little oil can be bled off to keep the rockers lubed. I think the high volume pump modification I'm developing might be the answer to a lot of worn bearing problems on the low pressure engines, if I can ever get back to it!
Jerry

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