• Become a Subscribing Member today!

    J3-Cub.com is the largest community of J3-Cub pilots, owners and enthusiasts. With over 1000 active members, we have fostered a vibrant community and extensive knowledge base.

    Access to the J3-Cub.com community is by subscription only. Membership is only $49.99/year or $6.99/month to gain access to this community and extensive unmatched library of knowledge.

    Why become a Subscribing Member?

    • J3-Cub.com hosts a library of over 13 years of technical discussions, J3 data, tutorials, plane builds, guides, technical manuals and more.
    • J3-Cub.com also hosts an extensive library of J3-Cub photos.
    • You will also receive two J3-Cub decals!

    Become a Subscribing Member and access J3-Cub.com in full!

    Subscribe Now

Continental C85-12 Oddity

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Apr 7, 2019
Reaction score
Ok Cub Brain Trust. Let’s see what you got.

I have a C85-12 with a strange case. It has a flat un-machined boss on top (see image). And after purchasing a new lifting eye (P/N 24879) to replace my abused existing one (see image), I realize that the case bolt spacing is different. What do I have here and what is the pad for?

The story from the logs was this engine started life as a C75-12 and was changed to a C85-12 in the late 1940’s.

The knowledgeable people around me say the same thing, that they read somewhere about this question and nobody can remember the answer.

Any help would be appreciated.


  • IMG_4058.jpeg
    2.4 MB · Views: 0
  • IMG_4574.jpeg
    2.8 MB · Views: 0

Latest posts