Bulent Aliev wrote:

BTW the very best way to control engine temperature in an aircraft engine
is with cowl flaps and NOT with water thermostats. We decided this about a year
and a half ago. Less aerodynamic drag because less air is flowing through
the rad. Better miles per gallon.

That's my preffered method also.

If I cut it Bulent you will have to weld on it so you might as well go
the whole route. Do you have the part that holds the pressure cap?
The pressure cap must be placed in the highest point of the system.

There is no pressure cap on this pump. I will have to buy and weld one on and maybe
connect it to expansion/burp tank?

OK good plan. Mazda sells the cap and the little plastic housing is screwed
on to. You might get one off a junk yard engine as it is part of the 
thermostat housing/cover. A simple 1/4 plate welded on the outlet pipe with 
two holes tapped in it will work to hold the cap and plastic part.

That expansion/burp tank is mandatory.

Paul Lamar
 
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