There are a number of
items to consider. The stock Mazda pump is a
convenient package. So, good to go there. The Kidney
shaped ports and the bearing hole for the pump shaft
will be in your new housings. Drillings to connect to
the oil pick up pipe and to the outside are required.
The stock pump will be more than adequate pressure and
volume wise. You can score big on the pickup shape
(trumpet bell) and bolt on end with an "O" ring
feature. I like the pressure relief at the end of the
system (Stock Mazda). With one less rotor spraying oil
there will be extra unused oil returning to the pan.
You might think about that oil returning to the top of
a full engine baffle plate to help reduce foaming.
The deeper the pan and the
closer to the bottom is the end of the pickup, the
less likely it is that the engine can be starved for
oil. So, steep climbs and descents and long slips will
be worry free.
You can clock the
stationary gears to accept incoming oil from nearly
any location.
Richard Sohn has done all
of this and makes the adapter that puts in 2 cycle oil
instead of sump oil. He also has the balance figured
out. Another problem solved.
The dry sump system is far
more complex and has far more weight and uses a very
expensive pump.
Not in the running if I
were doing it. If you need massive amounts of oil flow
you can buy the pieces of a dry sump pump and just
build an external pressure pump and use that on a wet
sump engine.
Lynn E. Hanover