Lufthans
Well Known Member
Hi guys,
Although I have plenty of experience in automotive engines (also in aircraft), I feel I am a bit out of my depth on these Lycoming things. So newbie question:
I plan to upgrade my narrow-deck, 150 hp O-320 in various ways:
1: Fabricate/ Install EFI (with electronic ignition)
2: Fabricate cold air induction
3: Up the compression ratio from the current 7:1 to 8.5:1 (unless someone can convince me that 9:1 and 93 octane fuel would be a happy combination)
I understand that I need to go to thick wall wrist pins. No problem
Question: Does one install new rings at the same time, or would it be a better idea to re-use the old rings (with the idea that they have been run-in on the cylinders already)?
(My current compression checks are between 71 and 75, by the way)
Thanks!
Although I have plenty of experience in automotive engines (also in aircraft), I feel I am a bit out of my depth on these Lycoming things. So newbie question:
I plan to upgrade my narrow-deck, 150 hp O-320 in various ways:
1: Fabricate/ Install EFI (with electronic ignition)
2: Fabricate cold air induction
3: Up the compression ratio from the current 7:1 to 8.5:1 (unless someone can convince me that 9:1 and 93 octane fuel would be a happy combination)
I understand that I need to go to thick wall wrist pins. No problem
Question: Does one install new rings at the same time, or would it be a better idea to re-use the old rings (with the idea that they have been run-in on the cylinders already)?
(My current compression checks are between 71 and 75, by the way)
Thanks!