Any pump that anybody comes up with must have a minimum flow at 6000 RPM
and wide open throttle.  If the pump puts out an excess flow at lower
RPM's and less than wide open throttle I see no real problem with that
except perhaps too much oil consumption or fouled plugs. The fouled
plug scenario has never been confirmed to my knowledge.

Paul,

When I broke in my 13BT after rebuilding it I ran double the prescribed oil
metering  (with the stock pump off of an '87-88 RX-7 turbo) for the first
~1000 miles.  This is with the stock metering system drawing standard
straight 30W dino oil out of the sump.  I noticed absolutely no oil
fouling.  Also consider this was a break-in period where large throttle
inputs and high RPM are not encountered.

I imagine that over-oiling with a proper 2-cycle oil would not produce any
harmful plug fouling especially in a motor which regularly is cleaned out
by high-RPM usage.

My $.02 from the ground..

John Vitamvas

 
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