As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
REMOVED ALL CYLINDERS FROM AN 850-HOUR FACTORY REMANUFACTURED (ZERO TIME) ENGINE DUE TO LOW COMPRESSION. FOUND ALL CYLINDERS WORN .009 INCH - .011 INCH OVER NEW SPECS. OPERATOR KEEPS OIL SAMPLES WITH NO INDICATIONS. NORMAL OIL CHANGES AND GOOD PILOT OPERATION.