Originally posted by Ikaros
I've heard it is best to store Airplanes [engines] with crankshaft facing upwards. reason is said to be protecting the crancshaft ball races from corrosion and gumming oil.
I guess there are always lots of opinions, and I guess it depends on how you treat your engines and how often you run them....
I always run all fuel out of my engines and pack them with lots of "outboard motor storage oil". I have several planes and a family so, I'm never sure how long any plane will be stored....
Letting bearings dry out will invite rust. By storing them nose down and, when they haven't run for a while, I insert more oil (and rotate a few turns to spread) I ensure thes stay well lubricated....