What was found
PILOT STATED LOSS OF POWER/ROUGH RUNNING. DURING INVESTIGATION FOUND CYLINDER NR 3 CRACKED FROM TOP SPARK PLUG HOLE TO EXHAUST VALVE. CYLINDER NR 2 HEAD HAD SEPARATED FROM BARREL AND CRACKED FROM TOP SPARK PLUG HOLE TO EXHAUST VALVE ALSO. CYLINDER NR 6 EXHAUST VALVE OVERHEATED AND MUSHROOMED, LOW COMPRESSION. THEN FOUND CANKCASE CRACKED 3" IN FROM CYLINDER NR 6 TOP THRU-STUD AREA TOWARD CASE ALL THE WAY THROUGH INSIDE TO OUTSIDE. ALL CYLINDERS ARE STEEL BARRELS . ENGINE WAS MODIFIED IAW STC SE4327SW RAM ENGINE CONVERSION AT OVERHAUL.