Bill Freeman wrote:

snips...

  3) Consider an emergency cooling system, perhaps drilling the
    water jacket on the hot side for fittings from a pressurized
    tank with an emergency-on valve.   Lose coolant,  punch up
    "nearest airport" on GPS,  change heading, reduce power to
    minimum flyable,  go full rich (perhaps "emergency super rich for
    cooling" setting on Tracy's FI system??) and turn on the "one shot
    emergency cooling system" to dump 2-3 gallons of water into
    the cooling passage at the hottest points thru internal spray nozzles
    to give a slow dump time, perhaps 5 minutes or so.  If you pressurize
    the tank to 75 psi, it will spray the water into the passages and get
   you perhaps 3-5 minutes of extra engine life, maybe more with
   low enough power setting.   Could make the difference between
  landing on a runway or in a field or trees.

snips.. 

  Feel free to tear this apart and improve it.

Bill Freeman

REAL GOOD IDEA on spraying the aux coolant at the hottest part of the
inner water jacket around the spark plugs. Even if it turns to steam and 
escapes. Converting water to steam sucks up a tremendous amount of heat. 
I would use a high pressure pump however to maintain the pressure through 
out the several gallon quantity in the aux tank.

Thanks Bill. Again, a great idea!

Paul Lamar
 
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