Barnhart wrote:

What are the minimum requirements for take off  for psi and temp of cooling
system.  Operating temp and pressures seem to be addressed for normal
flight.

Barny

The psi does not matter unless it is pegged at 21 or so psi. That probably means 
you are losing coolant. Generally that only happens if the engine is overheated.
Perhaps it could also happen if there is an o-ring leak between the combustion
chamber and the water jacket. 

The temp should be over 150 degrees F.

Paul Lamar
 
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