Hi compression for a purpose
Finished 9A. 9 to 1? Answ. Being that the 9A is easily flown downthrottled, that is how you should fly your O-320 baby. That high compression is good for two things: 1. too high an M.E.P and trouble, and 2. very high altitude. That is a precious new engine with or without the high compression, so I'd avoid the upper limits that the hi compression will push it into. Since it's good for the upper atmosphere, I'd ask the prop smith for an extra broad blade cruise prop. 4000 feet isn't very high. Up above 15,000 you should be able to let it loose. It will be like a turbo without a turbo. At sea level, I wouldn't take it over 70 percent. Watch out for the something for nothing shortcuts.
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