Bob Mears
Bob;
How many feet of line? Lots of -8
lines, and two coolers in series could have significant pressure drop,
certainly before the temp comes up. With the pressure control at the far
end, it is subjecting the coolers and the upstream line to that much higher pressure.
I don’t know for certain that it is a problem, but my engineering judgment
suggests it’s not the best. I did some sort of analysis on mine with
my 2-3 ft of line on each side of the cooler, and looking at the 16 gpm oil
flow we measured on the dyno, I went to -10 lines. Rotaries have
significantly higher oil flow rates than their piston cousins.
I think someone else suggested tipping
the rad the other way, and moving the inlet scoop forward and up. In
addition to reducing the corners the air has to make, it could have the advantage
of better flow and lower drag because it puts the inlet more into the ‘compression’
zone at the front (external diffusion). May allow a smaller inlet.
FWIW,
Al