Results 1 to 8 of 8

Thread: Spark Plug Longevity

  1. #1
    Junior Member
    Join Date
    Oct 2010
    Location
    East Fallowfield PA 19320 Home base airport - (KMQS)
    Posts
    7

    Default Spark Plug Longevity

    After 300 hours TT we are only averaging 50hrs between plug changes. Anybody getting better - and if so what kind of plug?

  2. #2
    Senior Member turbopilot's Avatar
    Join Date
    Feb 2010
    Location
    La Quinta, CA
    Posts
    536

    Default Re: Spark Plug Longevity

    What plugs are you using? See this post.
    Bob Anderson, CC11-00435, N94RA

  3. #3
    Administrator Pete D's Avatar
    Join Date
    Jan 2010
    Location
    Yakima, WA
    Posts
    1,158

    Default Re: Spark Plug Longevity

    Iridium plugs are now standard equipment on all factory Carbon Cub SS for the last year and a half or two years.
    Pete Dougherty
    Customer Support Manager
    Cub Crafters Inc

  4. #4
    Senior Member randylervold's Avatar
    Join Date
    Jan 2010
    Location
    Yakima, WA
    Posts
    1,378

    Default Re: Spark Plug Longevity

    Bob, you should be able to get 400 hrs or so out of the Iridium plugs.
    Randy Lervold

  5. #5
    Senior Member turbopilot's Avatar
    Join Date
    Feb 2010
    Location
    La Quinta, CA
    Posts
    536

    Default Re: Spark Plug Longevity

    Quote Originally Posted by randylervold View Post
    Bob, you should be able to get 400 hrs or so out of the Iridium plugs.
    I happened to just check mine. No measurable wear at 60 hours.
    Bob Anderson, CC11-00435, N94RA

  6. #6
    Senior Member
    Join Date
    Jan 2010
    Location
    Palm Beach, FL
    Posts
    205

    Default Re: Spark Plug Longevity

    I am at 155hrs on the Iriduims and all good and clean. Best Gary

  7. #7
    Senior Member Dan L's Avatar
    Join Date
    Jul 2010
    Location
    Montana
    Posts
    766

    Default Re: Spark Plug Longevity

    Curious if anyone has been using the Autolight XS4063DP iridium plug in the O-340? Pricing is in the $7-$8 range. Same specs as the NGK BR8ECMIX iridium plugs.
    Flying Carbon Cub EX #11 since 2011

  8. #8
    Senior Member Dan L's Avatar
    Join Date
    Jul 2010
    Location
    Montana
    Posts
    766

    Default Re: Spark Plug Longevity

    DDA6A524-052F-4755-8A3D-1F3F498413D7.jpg

    121DBE97-3F2D-4B53-AC39-C49D8387D51D.jpg

    I bought a set of these Autolite iridium plugs for $7.49 each (including shipping) from NAPA online. I didn’t get them installed until this past weekend and made a flight today to test them. Everything seemed normal. I’ll check them when I do my Condition Inspection in January.

    They’re longer overall but have the same thread reach.

    I changed the spark plug/coil leads too. I had just about 500 hours on the previous set and my experience says don’t go longer than that or some misses will soon develop.

    The old iridium plugs had about 300 hours on them and were due too.
    Last edited by Dan L; 11-22-2022 at 12:38 PM.
    Flying Carbon Cub EX #11 since 2011

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •