Ken Welter wrote:

  From day one I have been running a smaller racing beat crank pulley
as I was told that you need to slow the water pump down to stop
cavitation but I am using  Evans coolant and they say you can speed
up the water pump with there coolant without cavitation so I wanted
to know what most of you that are flying are running for a pulley.
--
Ken Welter

I might add Ken is using a 2.93:1 (or there abouts) gear box so he runs
his engine faster than most everybody else. Up to 8000 RPM.

Ken, it is not the water pump you need to worry about, it is the alternator. Or put a bigger pulley on the alternator.
..Chrissi

 
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