Is it time?

Discussion in 'Maintenance Bay' started by Bill Jennings, Nov 29, 2017.

  1. Bill Jennings

    Bill Jennings Final Approach

    Joined:
    Mar 2, 2005
    Messages:
    9,176
    Location:
    Southeast Tennessee
    Display Name:

    Display name:
    This page intentionally left blank
    Update.

    Plane left Madison, WI with 7qts of oil in the sump, after landing in Champaign, Ill the plane had 3 qts. So, it lost 4qts of oil in 1:15. According to my partner, the engine continued to run smooth and he felt no power loss. After landing the shop on field cut the filter, and found it to be clean. They checked the screen, and found pieces of ring in the screen. Based on #3 being low on EGT, they pulled #3 , and this is what the piston and ring pieces looked like.
     
    Last edited: Dec 4, 2017
  2. Bill Jennings

    Bill Jennings Final Approach

    Joined:
    Mar 2, 2005
    Messages:
    9,176
    Location:
    Southeast Tennessee
    Display Name:

    Display name:
    This page intentionally left blank
  3. Bill Jennings

    Bill Jennings Final Approach

    Joined:
    Mar 2, 2005
    Messages:
    9,176
    Location:
    Southeast Tennessee
    Display Name:

    Display name:
    This page intentionally left blank
    Cylinder supposedly looked very good (no pics), and the mechanic put a hone on the cylinder walls for the new piston and rings to seal, and put it together. My partner flew it home Saturday, no abnormal conditions noted and he said it ran and performed normally. He is doing another 2hr each way XC later this week, and will keep an eye on things.
     
  4. Stan Cooper

    Stan Cooper Pre-takeoff checklist

    Joined:
    Aug 29, 2017
    Messages:
    219
    Location:
    San Francisco, CA
    Display Name:

    Display name:
    Stan Cooper
    Thanks for the update. You should mount that piston with pieces of the rings on a mahogany base and display it.
     
  5. UngaWunga

    UngaWunga Cleared for Takeoff

    Joined:
    Oct 27, 2014
    Messages:
    1,196
    Display Name:

    Display name:
    UngaWunga
    The piston itself doesn't look bad, other than the carbon build up. The ring lands might be a little opened up from the broken rings bouncing around in there. Little bit of wear on the edges of the piston crown. Good to hear the cylinder was in good shape. That saved you some $dough.
     
  6. Paulie

    Paulie Line Up and Wait

    Joined:
    Aug 21, 2014
    Messages:
    549
    Location:
    Naples fl
    Display Name:

    Display name:
    paulie
    Angles valves only made by lycoming. $2500 vs $1000 for parallel.
     
  7. Paulie

    Paulie Line Up and Wait

    Joined:
    Aug 21, 2014
    Messages:
    549
    Location:
    Naples fl
    Display Name:

    Display name:
    paulie
    I'm overhauling a newly built m20c engine because I feel it's time. Runs great, good compressions but it has 2600 TTSN, never overhauled. New was 1966.
     
    denverpilot likes this.
  8. Tom-D

    Tom-D Taxi to Parking

    Joined:
    Feb 23, 2005
    Messages:
    27,624
    Display Name:

    Display name:
    Tom-D
    That was my opinion.
     
  9. Tom-D

    Tom-D Taxi to Parking

    Joined:
    Feb 23, 2005
    Messages:
    27,624
    Display Name:

    Display name:
    Tom-D
    That's all that counts.
     
  10. Paulie

    Paulie Line Up and Wait

    Joined:
    Aug 21, 2014
    Messages:
    549
    Location:
    Naples fl
    Display Name:

    Display name:
    paulie
    N
    Newly bought m20c. Autospell got me.