Kelly,

 

My radiator is fed by a single nostril on the right side of the cowl.  It is about 5.5 inches in diameter.  I am also stealing a little air from the oil inlet using a 3 inch flex hose which augments the inlet from the nostril for the radiator.  My theory of the oil cooler block is that would slightly reduce the flow of air into the cowl from the oil cooler, which would allow more air to flow thru the radiator.  It might possibly increase the pressure inside the inlet to the oil cooler, which could increase the air flow thru the 3 inch flex tube as well????

 

Bill B

If you get to play on a flow bench for a few  days, you will discard all you now know for certain about flow, and pressure distribution and gating of junctions.   You may well find that the flex tube is draining off air and pushing it back forward into the airstream. The junction can act like the gate in a transistor and shut off flow to the radiator. Keep it two stand alone systems. The oil is too hot already.

 

Lynn E. Hanover