Do you own a vintage or classic airplane and/or have you contemplated an engine overhaul?
The Cessna 120 restoration team has. After considering options, they decided to rebuild the Continental C85-12F. Bill Jepson disassembled the motor and the parts went out for overhaul. The Cessna project manager, Chris Riedener, is considering the same for his 1941 Interstate Cadet which currently has a C75-8.
Where do you begin the process and what are your options? What’s the difference between a -12 and a -8? Chris will explain the options in each certified aircraft’s type certificate data sheet. He’ll explain things to consider such as STCs, engine mounts, accessories, propellers, and the scarcity of parts. Adding horsepower could also reduce your useful load! What secrets lurk in an engine’s logbook? It’s worth doing your homework before you shop for a replacement motor.
Small Continentals were used in Cubs, Champs, and many others. The A-65/75, evolved into the C-75/85/90 and became the O-200 used in many Cessna 150s. We have a second C85 that has been disassembled for show and tell. It reached TBO and had an exhaust valve leak (a common issue). Bill will explain the teardown and we’ll have the parts on hand for inspection.
The meeting is at the EAA 105 Hangar (G1) at Twin Oaks Airpark. We typically have some food (small donation requested) and socialize from 6:30 to 7:00 p.m. The meeting is open to the public and begins at 7:00 p.m. with the EAA Monthly video, followed by a special program.