I have been reading the newsletter for the past several weeks. The ideas that
are presented are absolutely great. Gets all those other creative juices
flowing. Would be honored to be a subscriber.

As the newbie, for now, a question about an installation where the unit is
rotated 45 or 90 degrees so the plugs are at the 45 or on top. The idea being
to try and reduce the number of 90 degree bends in the intake and exhaust
systems. This would necessitate at least a dry sump oil system. Is this worth
exploring or is it something someone else has already tried and found it
wasn't worth the effort.

Tom Baxter

It works but I don't recommend it. The cooling oil drain backs from
the rotor are designed for an up right installation.

Paul Lamar
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Ed Anderson has had a "plugs up" installation flying for 10 years. The 2001 update is what he is still flying, btw.

http://www.dmack.net/mazda/April%202001%20Update%20Web%20Page.html

Note it is not a dry sump, but take a close look. Lots of thought went into it.

On my Bearhawk (four seat aircraft) there is a ton of room under the cowl, so installation is more traditional. With a single, or tandem seating, it is still worth looking at as it gets the exhaust on the bottom. Near impossible to flood on the ground, as fuel will not drain into the engine.

Tom Walter

There are other drawback. Steam rises so it is possible to get steam
pockets in the hotest part of the engine.

You are also asking the oil pump to draw oil from a longer
distance.

Paul Lamar