The detonation margin is pretty good with the 7.5:1 CR. That's why they
did it.
Walter,
Okay -make me ask: Let's suppose I crank my FF to 46 gph WOT full
rich for climb and LOP for cruise and have a prism system. (all help manage
CHT), and let's say I manage to keep CHT's below 350 at all times. how far
can I push the CR on a TSIO-550 without having a detonation problem?
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