Herb Sanders wrote:

same place as the factory cowling scoop (for downdraft cooling on a
Lycoming), but located to best direct the air both into the intake as

well

as hit the fuel rails and exhaust manifold. It looks rather ugly in

these

pics, but the finished product is faired in and looks better.
       Haven't flown it yet, (rain today) but I can't imagine not

realizing

an improvement in climb/cruise speeds. Also attached is a picture of
the
factory downdraft scoop.  Paul Conner

 Paul (Conner), If I am understanding correctly, you are going to blow
ram
air into the cowl in the general area of the throttle body, and not
specifically ducted into the throttle body for combustion air.

That may increase the in cowl pressure, and reduce the differential
pressure
from ram pressure in the NACA inlet (front side of the rad) and the exit
air
side of the radiator into the cowl. This will reduce your cooling
capacity
for water and oil. You may have excess cooling and be able to live with
it,
but be careful in early testing.
Herb Sanders

Hi, Herb....I have thought about that, and unfortunately, I won't know for
sure until I try it. (I just found a bad injector, and will have to wait for
a replacement).  Right now, I have more than adequate cooling. My temps will
cool in the climb.  If for any reason I loose cooling capacity, I will re-do
the new ram air scoop, and probably replace it with two small NACA ducts
with two hoses going direct into the throttlebody.  In NO WAY am I giving up
the excellent cooling I now have.  Thanks for the input, Herb, but not to
worry...I will not sacrifice cooling capabilities just for this new ram air
scoop. (That's why it's not painted).  I call this ram air intake
modification trial number one.  Take care.  Paul Conner

 
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