Today I pumped out a large pad area behind my hangar where we are building an RV storage shed.  I used a 20 + year old boat bilge pump with a 7/8 in outlet .  Current draw was 3.86 amps.  With an average discharge height of 8 inches it pumped 23.6 gallons/minute.  Watching the flow rate, I felt it was sufficient to  work on a 13B.
I recently bought a Renesis engine.  It was in an automatic equipped RX-8.  It has one 2 5/8 in dia. throttle valve controlling the intake.  I would expect an Ellison with about that diameter to work also.  The intake runner from the throttle valve to the block is 24 -25 inches.  I know the automatic equipped cars are limited to lower rpm and hp compared to the standard shift RX-8.  Does anyone know what is different that changes the hp rating?

Thanks
Dennis H.