O-470-U TBO of 2000 hours?

Discussion in 'Flight Following' started by Johnbo, Jun 14, 2019 at 12:39 PM.

  1. Johnbo

    Johnbo Filing Flight Plan

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    I’m in the market for a 182 and some have the O-470-U while most have the -L or -R.

    The TBO on the U is listed as 2000 hours but in reality does the U typically go any further between overhauls than its predecessors who have a 1500 hour TBO?

    Thx
     
  2. Eric Stoltz

    Eric Stoltz Line Up and Wait

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    If the engine is healthy, probably will go way past 2000 hrs. The oil analysis trend, filter inspections, and engine IRANs in the log will give good indication on the engine's health. Plus, is it being flown regularly and correctly? Too many engines get euthanized because of the OWT TBO.

    Low engine times and high engine times effect sale price, but have no bearing (punny) towards engine health.

    Post what you find in here so you'll get as many opinions as possible with little consensus. :):):)

    Search Mike Busch TBO to get a scientific-er opinion on the theoretical TBO.
     
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  3. Grum.Man

    Grum.Man Pattern Altitude

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    Bottom ends rarely give problems on aircraft engines that run regularly. You are more likely to need a top end rebuild than anything else. the U model turns lower rpms so that should help but it's more about temperature control and frequent use.
     
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  4. iflyvfr

    iflyvfr Pattern Altitude

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  5. Kenny Phillips

    Kenny Phillips Pattern Altitude

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    As with Lycoming's TBO extensions, under part 91, you get nothing. Nada. You can run your engine as long as it will run safely, and no more, and so many other things are more important than the hours on the meter.
     
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  6. iflyvfr

    iflyvfr Pattern Altitude

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    Agreed but as someone with a motor at ‘TBO’ I’d still like the higher figure from the mfg since that’s relied so heavily by buyers.
     
  7. ktup-flyer

    ktup-flyer En-Route

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    The last engine on mine went to 2,125sfrm
     
  8. Johnbo

    Johnbo Filing Flight Plan

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    So with all else equal (calendar time since last major, frequent use, proper mixture controls, etc) is an 1100 hour -U worth more than an 1100 hour -L or -R?
     
  9. jtheune

    jtheune En-Route

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    More important then the TBO is to note that the U egnine cannot run mogas while the earlier ones can.
     
  10. Grum.Man

    Grum.Man Pattern Altitude

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    That high in the hour range no, not really. It may mean something to a commercial operator that but the general public wouldn’t value it different.
     
  11. ktup-flyer

    ktup-flyer En-Route

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    Yep, the compression is too high. Mine feels like it makes more than 230hp though
     
  12. kgruber

    kgruber En-Route

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    Best engine they ever installed in a 180 and 182. Lots of power..............very little noise.