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Tom,
<<At low speed, my oil temps zoom, so summer touch and gos are a
problem. I suppose that is partially due to no inlet ramp in front of
the oil cooler causing turbulent flow. With only 2" from inlet to
cooler and the cooler being an inch below the inlet lip, I wonder how
you can follow the 11 degree rule for the angle from inlet to ramp. If
anyone has photos of a ramp that solves this problem and results in good
low speed oil cooling, I would love to see them.>>
I used to have the same oil cooling problem you describe at low speed.
Below 120 KIAS, the oil temperature would climb regardless of power
setting. It didn't matter if I was flying, taxiing, or just sitting
there waiting for a clearance. The attached photos show the inlet
diffuser that currently resides in front of the #2 cylinder and oil
cooler. The oil now cools right down to zero speed. Lengthy ground
operations and touch and go's are no longer an issue.
Please post some pictures of your cowl mods. They sound interesting.
How much lower was the MP in the updraft configuration?
Chris Zavatson
N91CZ
360 std
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