I was just about to install the high-flow plugs and remove the spring and
check ball from my e-shaft like Bruce shows in his video.  I would like to
increase flow to the rotors because I am turbocharging.  But at the last
minute, I asked mysef: "Why a check ball?"   My guess is that the purpose is
to prevent the oil from draining out when the engine isn't running.  I
suppose that will then make sure that oil flow to the journals happens
basically right after start up.  Or is there another reason?  Who all is
planning on making this mod and what is your thinking?

Dave Leonard

Those check balls and springs are in there to keep the oil pressure up at low
RPM when the rotors do not need cooling. As the RPM comes up the centrifugal
force on the balls  moves the balls off the seats allowing oil to squirt into the
rotors.
In the mean time the oil pump is running at a higher RPM so the oil pressure
is now high enough to supply both the bearings and the oil squirters.

Paul Lamar
 
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