What was found
IT IS NOT UNCOMMON TO FIND THE LONGER LW 75061 ROD BOLTS THAT ARE CALLED OUT IN THE LATEST O-360 TEXTRON LYCOMING PARTS BOOK MIS-MATCHED WITH THE CONNECTING RODS. THE EARLIER RODS, SUCH AS THE 74502 ROD, REQUIRE A SHORTER CONNECTING ROD BOLT (LW 74644). UNFORTUNATELY, DUE TO THE NECKED-DOWN DESIGN OF THE SHANK OF THE BOLT, THE 40 FEET/POUND TORQUE VALUE CAN BE ACHIEVED WITH EITHER BOLT; BUT, WITH THE WRONG BOLT WHICH IS LONGER, ONLY ABOUT 80 PERCENT OF THE THREADS IN THE CONNECTING ROD NUT ARE MAKING CONTACT WITH THE BOLT THREADS.