What was found
CYLINDERS WERE FOUND CRACKED DURING COMPRESSION CHECKS. THE ONLY WAY THE CRACKS WERE FOUND WAS BY USING LEAK CHECK FLUID AS THE COMPRESSION CHECKS WERE GOOD. NR 6 CYLINDER WAS REPLACED AT 50.0 HOURS PRIOR TO THIS BECAUSE OF A CRACK. THE CRACKS ARE ALL EMANATING FROM THE UPPER SPARK PLUG HOLES OVER AND PAST THE INJECTOR HOLES. THIS ENGINE WAS OVERHAULED BY T.W. SMITH ENGINE CO. IN CINCINNATI, OHIO.