This is interesting. Four apex seal oil injectors.
In another picture the lines look like they are steel instead of
nylon. Its about time. More engines died from cracked and brittle
plastic apex seal oil injector lines than from all other reasons
alone. The little  air assist rubber hoses can be got to and
replaced as needed.

Another neat thing is all the fuel injectors seem to be in one
line so one fuel rail can be used simplifying the fuel system.
Good news.

Paul Lamar

Interesting indeed!  I guess the twin oil injectors more evenly
distribute the oil over the width of the apex seal.  Another
advantage of the side exhaust ports is that the apex seal is no
longer subjected to the blast of the exhaust gases when the port
opens.  Should run cooler.

I was eyeballing that lower intake manifold too! It would make a
very nice starting point for an aircraft intake.  This RX8 is
turning out to be the answer to a rotor heads' prayers :-)

Tracy Crook
tcrook@rotaryaviation.com
www.rotaryaviation.com

Now all you have to do is follow through and make a 2.85 to one
ReDrive :-)>

Paul Lamar

Just a note about peripheral exhaust ports and apex seals.  Note that Mazda has
only built exhaust ports up to a certain width - no wider.  There is a reason for this -
if the port was wider there would not be enough support for the HOT apex seal.  The
seal would become concave and actually extend into the exhaust port and break
when the upper lip of the port was crossed.  This probably happens a little right now
but not enough to be harmful.  Two stroke motorcyles use a 'verticle bridge' in the
center of the port to give the piston rings support.  Unfortunately, this can not be
done on a wankel due to the hot exhaust gases would warp or destroy the bidge.

Ken Powell

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