nels Posted July 12, 2016 Report Posted July 12, 2016 I always thought the recommended TBO for the 200 HP IO 360 Lycoming was 2000 hrs but my pilots manual says it's only 1600 hrs. Was there an update that got it up to 2000 hr TBO sometime between 1978 and today?? My engine is the original IO-360- A3B6D.
Guest Posted July 12, 2016 Report Posted July 12, 2016 Here is the current version of the TBO recommendation http://www.lycoming.com/portals/0/techpublications/serviceinstructions/si1009aw_recommended_tbo_periods.pdf Clarence
ArtVandelay Posted July 12, 2016 Report Posted July 12, 2016 There is a service instruction 1009 from Lycoming, you will need to know your serial number. 1
carusoam Posted July 13, 2016 Report Posted July 13, 2016 Around Y2K was an interesting time to buy an airplane. Some engines had shorter TBOHs. The diameter of the valve stems was responsible for the shorter lifespan 1200 vs. 2000 hrs. PPIs became essential to ferret out what engine details you might be buying into. You can see some notes regarding the 1/2" valve stems vs. 7/16" in the doc that Doc posted. Running 50° ROP following the POH could also cause some shorter engine life. Usual note: I am a PP, not a mechanic... Best regards, -a-
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