I just got a Turbo Arrow III which has thus far been an awesome ride through my first 10-15 hours of use. However, the glass panel is giving me a level of information overload that is taking some getting used to. I have a digital engine monitor for the first time, a JPI 900, and it seems like both a blessing and a curse to have that amount of engine data lol.
The JPI 900 includes this cool "lean advisor" function, which I've been playing with to get to 75-100 degrees ROP in cruise. Problem is, I can't get there. When operating at ~29.5-30 MP/2400 RPM, the most ROP I can get is 40-60 degrees ROP with the mixture set full rich, which my understanding is within the danger zone for cylinder wear. With that said, the JPI is reporting I'm only around 65% power at those power settings (consistent with the POH). At these settings, my hottest CHT is 350-365, highest EGT is in the low 1400s, and TIT is 1450-1500. Those temps don't seem outwardly concerning, but I hesitate to push beyond 65% power in cruise when I'm only ~50 ROP. Of course, I realize things change with changes to power settings. Is this normal to not be able to get richer than ~50 degrees ROP at these power settings, or could this be a sign my mixture control/fuel flow might need adjustment?
The plane has GAMIjectors, a Merlyn wastegate, and engine has less than 150 hours and less than 2 years since OH if it matters.
The JPI 900 includes this cool "lean advisor" function, which I've been playing with to get to 75-100 degrees ROP in cruise. Problem is, I can't get there. When operating at ~29.5-30 MP/2400 RPM, the most ROP I can get is 40-60 degrees ROP with the mixture set full rich, which my understanding is within the danger zone for cylinder wear. With that said, the JPI is reporting I'm only around 65% power at those power settings (consistent with the POH). At these settings, my hottest CHT is 350-365, highest EGT is in the low 1400s, and TIT is 1450-1500. Those temps don't seem outwardly concerning, but I hesitate to push beyond 65% power in cruise when I'm only ~50 ROP. Of course, I realize things change with changes to power settings. Is this normal to not be able to get richer than ~50 degrees ROP at these power settings, or could this be a sign my mixture control/fuel flow might need adjustment?
The plane has GAMIjectors, a Merlyn wastegate, and engine has less than 150 hours and less than 2 years since OH if it matters.
