AN24 is inch and a half. Stiff and heavy :)

How big are the outlets?

I had my C&R radiator made with AN 16 fittings. They look a 
bit small. I'm looking at getting a maximum of 190 HP out of 
my engine. Any comments on whether these would be adequate or 
not? I promise not to make any more cracks about people's eyesight.

Brian Trubee

Small hose adds restrictions and reduces the overall flow. I am sticking
with what Mazda designed and that is about 1 1/2 inch. High flow in the 
block is good as it helps to transfer heat from the metal to 
the coolant in a scrubbing action. You cannot measure this heat transfer
by merely monitoring the temp of the coolant. One needs a "cylinder head temp
gage" so to speak. In other words a thermocouple embedded down 
in the metal rotor housing near the spark plug one MM from the combustion 
surface.

The area for one inch is about .78 inches square.
The area for 1 1/2 inch is about 1.77. Well over double the
flow area.

I will use thin wall 1 1/2 inch tubing and wiggins couplings or
rad hose for the joints.
  
Paul Lamar
 
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