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


You just turn them around. Many single engine boats have counter rotating
engines, especially ski boats. Picture this- in a boat that is driven from
the right seat, the torque from a standard rotation engine will produce a
force that adds to the weight of the driver. If you use a counter rotation
engine and 1:1 direct drive, the torque will pretty closely balance out the
weight of the driver. In my younger days I spent lots of time water skiing
on a lake, and owned such a boat. My starter was mounted pointing to the
rear of the boat, instead of tucked in along side of the engine. The engine
was a 350 Chevy converted for marine use by Pleasurecraft Marine. Likewise,
my alternator was installed on a bracket with the pulley facing the back of
the boat. Looked kind of strange, but I could replace my starter or
alternator for about $80.00. not several hundred like the guys with Ford
engines in their boats.

The rear angular splines on the cam were ground reverse and the gear on the
bottom of the distributor was different so that the oil pump would run like
it was supposed to. The only difference between this engine and a truck
engine was the camshaft.

The engine ran well, and wasn't very expensive to maintain.

Kevin Alderman




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