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08-26-2012, 08:00 AM
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Join Date: Jan 2005
Posts: 626
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Expected oil temperature reading
What oil temperature should I expect after a run-up for mag checks and a full static run-up lean out mag check with total engine run time of 6 minutes for this session? RV-9A, Lycoming O-320, fixed pitch Sensenich, Skyview read 110 degrees F after shut down, ambient temp around 75 degrees F.
Thanks!
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08-26-2012, 10:59 AM
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Join Date: Jan 2011
Location: Williamsport, Pa
Posts: 175
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oil temp
Mike,
It can take quite a bit of time to get the oil temps up to operating temperature. 110 F on the ground after 6 minutes is quite normal. I haven't been seeing operating temps (175 +/-) 'till I'm off the ground and on my way.
Jim Diehl #1976
5 hours into phase 1 and trouble free!
Lock Haven, Pa
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08-26-2012, 05:10 PM
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Join Date: Apr 2009
Location: USA
Posts: 1,499
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Mike,
Sounds normal to me too for this time of year.
__________________
Good judgment comes from experience, and a lot of that comes from bad judgment.
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08-26-2012, 06:17 PM
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Join Date: Feb 2006
Location: Keller, Texas
Posts: 309
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Take off temperature should be 120 F
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Nigel
RV9A-N113SQ
52F
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08-26-2012, 06:35 PM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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Mike,
I don't do the run-up below 90* and take off as soon as that is complete.
The Lycoming manual states:
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Originally Posted by Lycoming
The engine is warm enough for take-off when the throttle can be opened without the engine faltering.
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Nowhere in the manual can I find any reference to minimum take-off temperatures. If someone finds it, please let me know and I'll update this post.
Regarding CHT’s, here is what the manual has to say:
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Originally Posted by Lycoming
Never exceed the maximum red line cylinder head temperature limit.
For maximum service life, cylinder head temperatures should be maintained below 435*F (224*C) during high performance cruise operation and below 400*F (205*C) for economy cruise powers.
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__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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08-26-2012, 06:59 PM
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Join Date: Jan 2005
Location: Kansas
Posts: 384
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Lycoming Key Operations
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08-26-2012, 07:18 PM
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Join Date: May 2007
Location: Quincy, Florida
Posts: 680
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temperature
If the oil is at 70 degrees F it will flow easily and properly lubricate the engine. At or above 70 degrees F your engine is ready to use.
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08-26-2012, 07:29 PM
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Join Date: Jan 2005
Posts: 3,642
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Quote:
Originally Posted by mikehoover
What oil temperature should I expect after a run-up for mag checks and a full static run-up lean out mag check with total engine run time of 6 minutes for this session? RV-9A, Lycoming O-320, fixed pitch Sensenich, Skyview read 110 degrees F after shut down, ambient temp around 75 degrees F.
Thanks!
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Quote:
Originally Posted by jdiehl
Mike,
It can take quite a bit of time to get the oil temps up to operating temperature. 110 F on the ground after 6 minutes is quite normal. I haven't been seeing operating temps (175 +/-) 'till I'm off the ground and on my way.
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Both of these sound about right, Mike, at least from my experience.
__________________
Steve M.
Ellensburg WA
RV-9 Flying, 0-320, Catto
Donation reminder: Jan. 2021
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