It occurred to me that the RX8 rotor
housings have
the O-ring slots. Therefore the end housing can be
real simple. The steel wear surface is just the cheese
in the simple sandwich. It can even be chrome plated just
like the rotor housing for a super low wear and a super
smooth
surface. When over haul times comes (if ever) it can
be replaced or refinished. One of the cheap ways of making
these things is chemical etching. One large O-ring seals
the
steel wear surface to the aluminium end housing.

Light weight end housing are essential for 120 HP one rotor
light sport engines.

An external AN hose oil gallery further simplifies the
engine.
An oil scavenge pump replaces the stock oil pump and
scavenges the rotor cooling oil drain back, front and rear
main bearing drain back. An after market combined oil
pressure and scavenge pump is used. Here is one from
Barnes.

These are ideas Jim Mederer, owner of Racing Beat, used
on the time to climb engine.

The end housing themselves can be NC machined billet.
No need of castings.


Paul Lamar

Two things come to mind. Is there likely to be distortion of the wear plate due to the uneven temperature  from combustion side to intake side? Can stainless be used to reduce heat transfer into the coolant?


Robert LeClercq

Yes on the stainless.

Paul Lamar

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