Paul,
The hours are not flown off on my KIS, and won't be until after Oshkosh.

Status:
First flight 4/22/09
Total of 17 short flights to work out various systems issues. total time =
10 hours

Major issue I am working on: cooling.  I have installed a pressure
difference sensor between the front of the Radiator and under the cowl. I
also am measuring these pressures relative to cabin pressure using a
manometer setup.

Bottom line: I am having difficulty getting the air OUT of the cowl.  Get
good pressure recovery before the rad, too high pressure after.  Looks like
a cowl flap is in my future.

My theory: I have more air being introduced than the standard KIS because of
the oil cooler entrance in addition to the standard nostrils. Exit area is
the same, so it just cannot all get out.

Side Issue, testing on hold right now because alternator system went down
and is not maintaining charge voltage.
Bill Schertz
KIS Cruiser #4045
N343BS
Phase I testing

Thanks for the up date Bill. Pictures of Bills Kis Cruiser installation
is on the front page of the web site. http://www.rotaryeng.net

Good work on using the water manometer to trouble shoot the problem.
You could also try some louvers directly above the back side of the
rads as that is a lower pressure area.  Further aft, just in front of the
windshield, it becomes a high pressure area. Peter Garrison, heavy into
CFD, choose that area for his cowl flaps.

BTW there is an off the shelf low cost (less than $15) product that
is near perfect for this application. It is called a wall vent
with built in damper for central heating system.

Home Depot. Cowl flaps built in. Available in light weight plastic or steel.
They come in many different sizes and styles. Look for the one way versions.

Here is a company with a zillion different products.
http://www.atlantasupply.com/wall-register-vents.htm

Paul Lamar