Paul,  I don't have a drawing of the housing.  I want to compare your
p port's location to the one I used for my engine.  My port is
referenced from the horizontal  center line and yours is referenced
from the outside bottom of the housing.  What I really want is to
complete the attached drawing (my port vs LeMans)  by including your
p port.  Could you do that for me?    If not, send a Acad drawing of
the housing and I will attempt to convert it.

Secondly,  I need a clarification to make sure I am locating the port
exactly as you called out.  You stated it should be 8.64" up from the
bottom of the housing.  The outside bottom of the housing is a
difficult place to measure from, especially when the housing is
clamped on its side in the mill.   I wanted to indicate from the
bottom of the pan flange which at first glance I thought was the same
height. Not so.  The pan flange extends down .064 inches past the
bottom of the rotor housing. If I indicate from it  I will need to
add .064 to 8.64. to get back to your call out.  Then I worried if
someone had measured up from a table top using a height gage, not
noticing the gap,  their measurement would be off by .064. Obviously
if I don't have anything to worry about I will create something.
Anyway, make sure I am doing the right thing  please.   Jerry

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The reference point is the pan flange. Sorry for the
confusion. The pan flange should be easy to reference.


I'll get a dimension for the center of the housing but if you
have a height gage you can come up with it more accurately
than I can. With the rotor housing vertical  measure the top
and bottom of the trochoid and subtract the  bottom from the top,
divide by two  and add the bottom.