Posted for Sky2high@aol.com:

 Randy,
 
 Ah, since I didn't understand the high and low inlet problem, here are  three
 pix of my installation.  I am not saying any of this is right, just  that it
 works for me.  In case it doesn't come through, that is a small SW  cooler
 with 900 hours and also that there is no air filter on the induction  system.
 I
 do have a remote oil filter and the oil is changed about every  35 hours or
 when it appears black enough.  The 3 pix are top view, level  view (oil
 inlet/outlet same relative position) and through the NACA.   I have never
flushed the
 cooler although for races I sometimes added AvBlend to  reduce hp losses due
 to engine friction and for giggles, I recently dumped in  some Marvel Mystery
 oil.
 
 Good luck,
 
 Scott
 
 
 In a message dated 3/17/2009 5:25:52 A.M. Central Daylight Time,  
 marv@lancair.net writes:
 
 Posted for randy snarr  <randylsnarr@yahoo.com>:
 
 Scott,
 Great info,  Thanks!
 
 I am in the middle of reworking my duct to the  cooler. This one will be much
 smoother and have a better transition  without scat tube and the associated
 bumps. After reading your attached  info, that may not be my problem.
 
 I have never purged my  oil cooler for air and mine is low on the firewall.
 In
 your attached  documentation, it talks about low mounted oil coolers and how
 they are  prone to having air in them. How do you purge the air out?
 My oil  cooler is on its side with a hose fitting on top and bottom. My
 plumbing  comes out of the top of the engine(near the vernatherm) to the top
 fitting  on the cooler and from the bottom of the cooler to the fitting in
 the  
 middle of the accessory case.
 It is my understanding that the hot  oil out comes from the top of the engine
 near the vernatherm. Should that  go to the bottom of the cooler or does it
 matter?
 I would think  if the hot oil in went to the bottom of the cooler it would
 force the air  up and out in the return line to the lower fitting on the  
 engine.
 You have several good ideas that I am going to try in  addition to the duct
 changes.
 I plan to test after each mod to  see what make the difference.
 
 Thanks again,
 I will  post what I find..
 Randy L. Snarr
 N694RS