<<  A simple solution is turn the e-shaft
 pulley around front to back. That moves both V belts aft
 about two inches which is enough to clear the oil fitting.
  >>
Go easy on the belt tension. And increase the pulley bolt torque. The front
of the shaft is at risk when the side loads go up. After you over torque the
bolt, recheck the end play. You may need to put in a longer spacer. Everything
affects everything.

Lynn E. Hanover

Now that we have measured the HP of a water pump at 7000 RPM we now know
the side load. It is minimal. Less than 5 pounds or so. Definitely
do not over tension the belt however. Use a machined Racing Beat pulley
to slow the pump for aircraft use anyway. It is a lot more durable
than the stock steel pulley as far as side load is concerned.

Excess side load can ruin the bearings in both the alternator and
the water pump. The e-shaft is so over kill compared to a 5/8 pulley
shaft there is no problem at all with e-shaft bending and fatigue.

Just take a look at the bearings and shaft diameter in a 5 HP
electric motor. These things will last 50 years. 

Paul Lamar
 
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