| OK an engine question - NOT GMC [message #61243] |
Thu, 22 October 2009 23:43  |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
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I have been putting off fixing my Lycoming 0-320 for almost a year. Tonight I finally got around to pulling #1 cylinder. I had low very compression but I flew it that way always wondering if it was it going to go completely in flight.
Well I pulled the cylinder tonight and found the only top ring broken. Nothing else. No marks on the cylinder walls, no marks on the piston. Valves are good. Nothing but a top ring broken almost perfectly in 1/2.
Now the question is what to do next. I'm leaning toward just replacing the ring (it has 3 - 2 compression and 1 oil) and putting it back together with new O-rings and gaskets of course.
The cylinder is standard and chrome with about 1200 hours on it.
I'm looking for opinions and also any ideas on why it broke. I have never seen this happen before.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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