This morning, I started my brand new IO-390 Thunderbolt engine for the first time.
After doing the pre-tasks including pre-oiling, draining preservative and verifying oil pressure, I took it out to the run up area and fired it up.
It started without difficulty and ran well.
I do have a handful of questions to research:
Cylinders 1 and 2 ran cooler than 3 and 4. The front two were about 200F cooler (EGT)than the back two (900F vs 1100F) at idle. The CHTs were also lower by about 50F. When I ran it up to 1500 rpms, the two front cylinders registered similar temps to the back two. BTW, I ran it with the cowlings off.
An experienced A&P friend of mine said that was not especially problematic.
I don't think the fuel flow transducer is set up correctly - it reads 6.3 gph at 1000 rpms (I expect it to read about 2 to 3 gph), drops slightly to 5.3 gph at 1500 and then goes up to 7 gph at 2100 rpms.
The system voltage as reported on the G3 is 13v, this is with both the primary and standby alternators switched on. I expected the system voltage to be 14.1v. The current as reported by the G3 was 0.0 though the VPX showed all of the loads with their correct values. I am wondering if I have to configure the G3X for my setup or possibly if the primary alternator is not putting out any power.
I have to adjust the FM-150 to get the proper idle mixture and idle rpms.
Overall pretty happy. Hope to be flying in about 3 weeks.
bruce
After doing the pre-tasks including pre-oiling, draining preservative and verifying oil pressure, I took it out to the run up area and fired it up.
It started without difficulty and ran well.
I do have a handful of questions to research:
Cylinders 1 and 2 ran cooler than 3 and 4. The front two were about 200F cooler (EGT)than the back two (900F vs 1100F) at idle. The CHTs were also lower by about 50F. When I ran it up to 1500 rpms, the two front cylinders registered similar temps to the back two. BTW, I ran it with the cowlings off.
An experienced A&P friend of mine said that was not especially problematic.
I don't think the fuel flow transducer is set up correctly - it reads 6.3 gph at 1000 rpms (I expect it to read about 2 to 3 gph), drops slightly to 5.3 gph at 1500 and then goes up to 7 gph at 2100 rpms.
The system voltage as reported on the G3 is 13v, this is with both the primary and standby alternators switched on. I expected the system voltage to be 14.1v. The current as reported by the G3 was 0.0 though the VPX showed all of the loads with their correct values. I am wondering if I have to configure the G3X for my setup or possibly if the primary alternator is not putting out any power.
I have to adjust the FM-150 to get the proper idle mixture and idle rpms.
Overall pretty happy. Hope to be flying in about 3 weeks.
bruce