N941WR
Legacy Member
When I replaced my O-290D2 with an ECi O-360 kit engine, I didn't do anything special with the engine, other than put it together. My compression ratio is 8.5:1, no special cylinder porting, etc.
I do have a custom FAB that I had to create to fit my Sam James cowl and I have dual P-mags which I have tuned to CHT, not power. (I reduced the Offset and the Max Advance by -1.4 degrees, nothing special.)
The other day when I performed the time to climb tests that I posted in this thread, I did a couple of speed runs down at 8000' DA to see how my new timing configuration was working to keep the engine cool.
This evening I finally pulled the data from the SkyView and found I was going a 175.7 Knots TAS at 8,264' DA while turning 2805 RPM with 22.9" MAP and drinking 10.7 GPH (Leaned 100* ROP) with an OAT of 7*C/44.6*F.
I plugged those numbers into a %power calculator I found on line and it indicated I was putting out 201 HP, more at sea level.
Is that even possible?
I do have a custom FAB that I had to create to fit my Sam James cowl and I have dual P-mags which I have tuned to CHT, not power. (I reduced the Offset and the Max Advance by -1.4 degrees, nothing special.)
The other day when I performed the time to climb tests that I posted in this thread, I did a couple of speed runs down at 8000' DA to see how my new timing configuration was working to keep the engine cool.
This evening I finally pulled the data from the SkyView and found I was going a 175.7 Knots TAS at 8,264' DA while turning 2805 RPM with 22.9" MAP and drinking 10.7 GPH (Leaned 100* ROP) with an OAT of 7*C/44.6*F.
I plugged those numbers into a %power calculator I found on line and it indicated I was putting out 201 HP, more at sea level.
Is that even possible?