ORIGINAL: jessiej
ORIGINAL: Cyberwolf
Any engine will cool better in the air, And again if your engine is set where its supposed to be you won't have a lean run in the air.
An engine may or may not run cooler in the air than on the bench. Factors like cowlings and the aerodynamics of the nose play a major role. You are correct that the engine needs to be set "where it's supposed to be". Far easier and safer to determine this setting on the bench, especially if you have duplicated tank size and location, fuel line length etc. as will be used in the plane.
jess
What part of the higher you go the colder it gets don't you believe, then add movment to that and it really cools off in a hurry, Ya ever hear of the wind chill factor? ,honest its there when the weather is 90 degrees out. Were not talking what if the cowl is wrong or what if this is wrong or what if period. I said any engine will run cooler in the air and its a proven fact, do a search if you don't believe me. I have seen a new engine ruined on the bench by running it to lean as well as running a ABC to rich. Both engines was toast after a couple of tanks due to improper tuning. I have yet to loose a engine in the 40 plus yrs I have been doing this, so I think I must be onto something right .