Complex/High Performance aircraft questions

[JOhnH]

Second, the CHTs were running at 300 or a little under. My buddy said this was normal

Your question got me to thinking; I often see CHTs as low as 290 in my IO520 (V35), so I looked it up in the POH:

CYLINDER HEAD TEMPERATURE
Operating Range
(Green Arc) . . . . . . . . 200° to 460°F;93° to 238°C
Maximum Temperature
(Red Radial) . . . . . . . . . . . . . . . . . . . . . . . 460°F;238°C

So I"m good.

 

[asicer]

What percent power is 23”/2450 on your engine?

(a) Locate RPM and manifold pressure on altitude curve (point "A").
(b) Locate RPM and manifold pressure on sea level curve (point "B").
(c) Transfer "B" to sea level on altitude curve (point "C").
(d) Draw line from "C" through "A".
(e) Locate point "D" at pressure altitude and read horsepower.
(f) Correct horsepower for inlet air temperature as follows:
(1) Add 1% for each 10degF below TS.
(2) Subtract 1% for each 10degF above TS.
(TS = Standard Altitude Temperature)