Here are the essentials.

    --
    Paul Lamar ...No rotor no motor.


Paul,
How would you purge air out of the system in this arrangement?  I know
that this has been discussed in detail in the past, but it seems that
you would need a line from the rear side housing to the pressure can in
order to purge air that may be trapped in the engine.

Mark S.

You must run a vent line from the highest point in the system
to the top of the pressure can. In a tractor tail dragger it would be
the rear (car) end housing. The housing closest to the PSRU.
The best place is where you have the pressure fitting now. I think
it is the return line from the water heater port in the stock
RX7 system.

The pressure container must be mounted as high as possible.
The cooling system is constantly generating tiny steam
bubbles. These must be able to rise to the highest point in the
system which should be just below the pressure cap. When the pressure
in the system rises to the blow off setting of the pressure cap
this steam accumulation will be the first thing purged to the catch
can.

Paul Lamar ...No rotor no motor.

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