> could someone explain to me how the water flows thru the pump?  It seems
> like the passages allow water to flow thru the block without first passing
> thru the radiator.   Kevin  20B

You're looking at the bypass passage in the pump.  This gets closed by the
double action thermostat when the engine is warmed up.  This passage MUST be
blocked if you don't run the thermostat.

Tracy Crook
tcrook@rotaryaviation.com
www.rotaryaviation.com