schrieb im Newsbeitrag
...
..... Seriously, more info would help. What is you goal? What kind of
plane?

I have a Revmaster (normal aspirated) in an slightly :-) overweight Sonex.
The plane hasn't flown yet. Some extra HP could help. The Conti would fit
weight-wise, but seems also underpowered for this application. The Conti
turns slower than the Revmaster, but my prop diameter is limited by ground
clearance...