Al Gietzen wrote:

The first test gave a free flow of 50 gpm at 2600 RPM.  Throttled down to

10

psi, it gave 20 gpm.  Max pressure was about 16 psi with full shutoff
resulting in about 12 psi.

Bob;

This data makes the important point that centrifugal pumps do not generate
much pressure; so high back-pressure loops can seriously reduce the flow.

Does anyone know what numbers are desirable for a pump for this engine?

My analysis indicates you'd like about 50 gpm at 6000 rpm (NA, ~260 hp); in
your actual cooling loop.

Al

 
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