Paul,

    I had sort of an odd thought, and I'm not familiar enough with the
    the 13b to reason it out.  With a p-port engine, would it be
    possible to flip the rotor housings backwards and have the engine
    run in the opposite direction?

    Josh

    We have discussed this in the past and that is the first
 suggestion   that might work. The tension bolt pattern would not
 match up but if   you are building your own end housings that would
 not matter.

    Paul Lamar

  If you build your own end housings they could be designed so they
 are both including the bell housing pattern. That way they could be
 just turned around. For twins with reverse props, one engine turned
 around and a change to the PSRU if it has an internal oil pump. This
 way a dual supply of spare engines is eliminated.

  Dale Davies

 Don't forget about all the accessories such as the starter and the water
 pump.  They would not be happy running backwards.

  Mark LaPierre



This is simpler than you are looking at. If you are building your own Al end
housings, make the front one with the bell housing on it. If you build the
e-shaft, make both ends like the Mazda rear with the taper. Then you can put
an adapter like the flex plate or flywheel on. You put the ring gear and
starter in the same place you always did. Just turn the whole assembly around.
The drive is then reversed. The coolant pump would have to be mounted off the
side, but should be fairly simple while doing CAD for the housings. Starter
turns normal direction. Alternators may need to be turned around and mounted
on the other side of the belts with a drive bolted to the ring gear hub. Same
with the CAS on the e-shaft. With p-port you do not have ports in the end
housings, so that simplifies that part. Makes room to mount the other needed
accessories.

Dale Davies



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