Aviaman
Well Known Member
I have a Mattituck TMX-O360 carbureted, with only about 70 hrs TT.
When starting the engine, the oil pressure on my EFIS rises very slowly.
It may be 10 seconds before getting off of 0, then slowly rising to a few psi. Then at maybe 15-20 seconds it rises rapidly to full pressure, around 50 psi at idle. In flight, the pressure is in 70s. But it bothers me that it seems the engine is running dry for so long during start up. This happens even when the engine is thoroughly preheated. Is this normal? Lycoming?s published figure is 30 seconds for having oil pressure, but that seems a dangerously high figure (just like 500F is for CHT limit). Any observations or ideas?
RV-9A
When starting the engine, the oil pressure on my EFIS rises very slowly.
It may be 10 seconds before getting off of 0, then slowly rising to a few psi. Then at maybe 15-20 seconds it rises rapidly to full pressure, around 50 psi at idle. In flight, the pressure is in 70s. But it bothers me that it seems the engine is running dry for so long during start up. This happens even when the engine is thoroughly preheated. Is this normal? Lycoming?s published figure is 30 seconds for having oil pressure, but that seems a dangerously high figure (just like 500F is for CHT limit). Any observations or ideas?
RV-9A