Quote: deadbug
Greg, Cruiser,
Thanks for your thoughts. I have flown behind these stock injectors for over 1500 hours and in spite of a brand new overhaul 130 hours (13 months) ago, it acts the same way lean of peak. I have been told it is very common with the Lyc IO-360s using stock injectors.
I typically cruise at 7-9000 feet, at approximately 65% power 50-80 ROP and get fuel flow and performance right at book value (interpolating between best pwr/best econ). Just the other day I happenned to record the following EGT/CHT readings:
7000' MSL, OAT: +18C, MP/RPM= 22.9/2400, 60ROP,.....64% power according to the charts
EGT/CHT
#1 1351/378
#2 1289/362
#3 1338/374
#4 1294/356
What made me think about GAMIs was to equalize the "left bank" (2 & 4) cylinders to the "right" bank (1 & 3); as 1/3 are balanced and 2/4 are also balanced--but the left bank is definitely higher than the right. I thought the GAMIs would maybe help balance this out and as a side bonus, make LOP possible.
Oh, BTW, was the GAMI tweaking difficult? My fuel flow indicator is a Hoskins 101 (old) and in spite of a new transducer, seems to indicate 1 GPH higher than actual.