There is a valve in the e-shaft that
reduces oil to the e-shaft when it is cold. Bruce (and Tracy?) sell a
part that holds this valve open at all times. It can stick and ruin the
engine. If this engine was built by Bruce, it likely has this mod.
Again to be sure that the pump is at
fault, you should check the first place you can see oil after the pump. That
is the outlet from the front plate, not after the filter! Looking there
introduces the possibility of hose, filter boss, and filter into the mix.
If the hose is lifting a flap, you will not see it by looking into the hose because
it could lay back down when the oil stops flowing.
Bill B
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Bobby J. Hughes
Sent: Thursday, September 30, 2010
4:16 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: Update:
Loss of Oil Pressure
I think your referring to the e-shaft oil
jet modification. I have the mod and low oil pressure at idle and low rpm's.
Mid-20's at idle when the oil is warm. Pressure comes with rpm.
Bobby
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
On Behalf Of Thomas Mann
Sent: Thursday, September 30, 2010
1:58 PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: Update:
Loss of Oil Pressure
Chris,
I'll look it up when I get home. Tracy
mentions it in his book and it's in the Bruce T. Video.
(most likely someone will come up with this in the meantime.)
T Mann
From: "Chris Barber" <cbarber@texasattorney.net>
Sent: Thursday, September 30, 2010
1:53 PM
To: "Rotary
motors in aircraft" <flyrotary@lancaironline.net>
Subject: [FlyRotary] Re: SPAM-LOW:
[FlyRotary] Update: Loss of Oil Pressure
Nope. That particular EPA "fix" is not ringing a
bell. However, the fact that it changed from what it was doing before is a
significant concern.
Do you know of where I may get more info on the
retardation. Mine is a 2nd gen. Would not think that would be considered a
later model.
Hey Chris,
I figure you've already covered this base but here goes:
Now keep in mind I have not rebuilt my 20B yet but I have read where in the
later models of the rotary, they retard the flow of oil until the temperature
rises to an acceptable level as part of the measure Mazda took to satisfy the
EPA requirements.
Like I said, I'm sure you covered this base by overriding that mechanism,
right?
T Mann