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And I am running a Hushpower, I run a bore scope up it today and the exit cone looked completely intact. No way to check out the entrance cone without taking the exhuast system apart, which is possible but a PITA. Is a Hushpower considered restrictive?
Brian Trubee
-----Original Message-----
From: Bill Bradburry <bbradburry@bellsouth.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Tue, May 15, 2012 8:38 pm
Subject: [FlyRotary] Re: High EGTs
Mark,
Now you have gotten me concerned! I changed the muffler and that didn’t seem to have any effect on the EGTs, so I don’t think that is the cause, but I don’t want to damage any orings. What were the temps you were seeing when the orings were damaged?
Bill
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Mark Steitle
Sent: Tuesday, May 15, 2012 10:18 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: High EGTs
Brian,
I had high EGT's at one time. Turns out it was due to an overly restrictive muffler. The high EGT's damaged the o-rings resulting in an engine overhaul. Could this possibly be at the root of your high EGT readings?
Mark S.
My engine is now running just the way it should, temps were 180 or lower on a 75 degree day, but my EGTs have always been high, really high- above 1800 almost all the time. I think it may be a calibration issue. My egt sensors are about 3 inches downstream of the exhaust ports, and I am using Tracy's EM2, calibrated at the stock settings. When the engine is stone cold, the egt's read about 230 degrees, which I assume is normal because the sensors are meant to operate at a much higher temperature. Any thoughts?
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