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01-28-2017, 11:56 AM
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Join Date: Jan 2007
Location: Stuart, FL /Hartford, CT/Virgin Gorda,BVI
Posts: 3,122
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oil pressure numbers..........
i have put in a new OP sender for my EIS system. i am getting 40 psi taxiing and 60 psi in flight. how are these numbers compared to others? thanks. 
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TURBO YES =VAF= Payed Jan2019
Ed D'Arcy
RV6-A 5,200+ hrs, R-44 1,600 hrs, Helicycle 320 hrs, gyro sold,35,000 miles flown in 2015 
Stuart, Fl / S WINDSOR,Ct / Virgin Gorda, BVI - under major repair from hurricane damage
VAF #840 EAA AOPA FAC FABA QB SPA
addicted pickle ball player
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01-28-2017, 01:34 PM
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Join Date: Jun 2005
Location: Locust, NC
Posts: 440
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15 Degrees lower than I'd see on a hot day. What'd the look like before the sender was changed?
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Dave
M20C
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01-28-2017, 01:42 PM
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Join Date: Aug 2005
Location: Atlanta, GA
Posts: 4,208
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I went from Rochester Gauges to a GRT EIS 4000 and my indicated pressure dropped by about 5 PSI. My oil temperatures also dropped.
No telling which set of gauges was more accurate.
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Kyle Boatright
Marietta, GA
2001 RV-6 N46KB
2019(?) RV-10
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01-28-2017, 03:15 PM
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Join Date: Apr 2008
Location: Lake Havasu City AZ
Posts: 2,390
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OIL PRESSURE
I like to see 75# on a Lycoming. Some very good evidence that higher is even better for valve train lubrication.
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01-28-2017, 03:22 PM
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Join Date: Oct 2012
Location: Clearwater, FL KCLW
Posts: 1,281
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I run about 60 on the ground, and 75-80 in flight, GRT EIS and senders.
Chris
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Chris Johnson
RV-9A - Done(ish) 4/5/16! Flying 4/7/16
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01-28-2017, 04:34 PM
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Join Date: Aug 2016
Location: Asheville, NC
Posts: 2,092
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70-95
On my Lycoming O-290-D2, I see 70 after startup and 95 in cruise.
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01-28-2017, 04:40 PM
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Join Date: Jan 2005
Posts: 833
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Adjust
Sounds like you need to adjust the oil pressure on the engine. If you're seeing 60 psi I recommend 1 full turn clockwise then test fly.
This adjustment is common
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01-29-2017, 09:25 AM
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Join Date: Aug 2009
Location: Newport, RI
Posts: 705
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Oil pressure
Hey Turbo ( pickle ball king), you could t-in an inexpensive oil pressure
Guage from an auto store, compare the values then adjust the offset programing
In the EIs to equal the auto pressure guage, or at least compare the difference. Can help you with this. If they both reflect low values, then consider adjusting the mechanism on the engine.
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Al Girard, Newport, RI
N339AG
RV-9
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01-29-2017, 10:34 AM
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Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 5,277
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Quote:
Originally Posted by Kyle Boatright
I went from Rochester Gauges to a GRT EIS 4000 and my indicated pressure dropped by about 5 PSI. My oil temperatures also dropped.
No telling which set of gauges was more accurate.
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Similar here. I was getting 70+ PSI hot with the Dynon. GRT EIS is showiing mid 60's with the same sensor. Once it gets warm, I will connect my differential pressure gauge (aviation compression tester) directly to the sensor (clamp on some hose to connect them). That will tell me how accurately it is reading the pressure.
I think the consensus is that 70 psi is the recommended low end for cruise OP, though lycoming states 60 as the minimum.
Larry
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