Ring Delamination
The "ring delamination" in ECI Titans refers to delamination of the outer molybdenum plasma coating on the upper compression ring. I have the Type "A" ECI Titans of that time period and have 900 hours on them, and periodically check for the presence of molybdenum in oil analysis, and none has shown up so far. Apparently, this phenomenon did not warrant an AD or SB, since it is not a safety-of-flight issue, and results only in increased blow-by and slightly reduced compression. I have not heard of this phenomenon causing the nickel coating on the cylinders to shed.