lifter galley crossover tube

Oil control is hardly simple physics. Making anything perfect is also impossible....

Back on the topic....it's tempting to go to an external pump and pipe the oil into the front oil feed port on the R3 block. Though I am not seeing the benefit over the 'rear feed' of a stock engine. If #4 is starved when you rear feed, #2 would be starved when you front feed. I'm think a true 'loop feed' (front and rear) would be worth looking into.

oil pump.jpg