Joe, that is where I drilled through & taped for the RWS PSRU oil return.  David R. Cook  RV6A Rotary

From: jskmberki@windstream.net
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Thursday, September 1, 2011 8:29:56 PM
Subject: [FlyRotary] Front Iron housing 89 13b

I have changed the design on the font motor mount.  It used to be an
  aluminum angle attached to the front of the engine utilizing the oil  pan
  bolts.  When I decided to use the 3rd gen front cover the 2nd gen oil pane
  had to be modified for the different bolt pattern in the front cover.  The
  new design permits the engine to rest on an aluminum angle but is secured on
  the side by picking up holes in the sides of the front iron. The left side
  has a hole tapped in a convenient location.  The left side has 2 casting
  holes that are not tapped.  My question is would it be OK to drill through
  the aft hole and tap it for the mount?  It wold penetrate the crankcase but
  could it be sealed with a thread sealant? Or am I inviting trouble? It is
  not into any oil passage.  See pics. Thanks for any help.
 
 
  Joe Berki
  LimoEZ
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