Subject: Rear motor mount oil pan.
From: ACRE
Date: 6/18/2004, 9:36 AM


     > Tom,  can you make the windage tray.  It is .125 6061 T6.   There are
     > a
     > > couple of cut outs for the oil pick  up tube and for oil drainage
     > into
     > > the pan.  There are also holes around the perimeter for the pan
     > bolts.
     > >    The windage tray is the foundation of the aluminum  oil pan.
     > Jerry

     > I think so Jerry,  If I have the exact diminsions I'm sure I can
     > program the part and cut away.  Tom Webber

     You'll need and oil pan for the bolt holes. I don't have a drawing
     on those. I use the stock pan as a pattern.

     Paul Lamar

Paul, Jerry, and Tom,
I wanted to pass along some information on "windage trays."
For a long time these trays were used in cars. (conventional piston)
There were finally studies done with high speed photography and
windows on the dyno. The windage trays were actually bouncing the
oil back into the crankshaft. In the rotary I doubt we would have as
much of this problem. The fix in conventional engines was to make
"windage tray" out of heavy screen. This broke up the oil dropplets
and allowed them to fall into the pan. Old time drag racer Bill
"grumpy" Jenkins was shown some of these studies by Chevy.
He used crankshaft scrapers, screen windage tray and dry sump
to remove as much oil as possible from the rotating assemblies.
The removal of oil gave him as much as 10-15 HP!
The oil was sticking to the crank like taffy!  With our need
to run high oil pressures at higher RPM, getting the oil to stay in
the pan will probably benefit the rotary as well. The old book from
HP press The Chevrolet Racing Engine, by Jenkins chronicles
many of the lessons learned on oiling. Now out of print I believe
though several of these books including MacInnis Turbocharger
are being revived and reprinted.
Bill Jepson

Interesting Bill  but there is nothing that can be done on the rotary
along these lines as the e-shaft is totally enclosed by the engine.
In fact we don't call it a windage tray. We like to call it an air 
oil separator plate.

Paul Lamar
 
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