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.

Paul Lamar

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