FAQ Index Rod & Main Bearing Clearance Alum Rods Octane Test Rocker Arm Geometry 1972 Cylinder Head End Bolt Hole Clamp POLY-LOCK ADJUSTMENT   INSTALLED HEIGHT DIMENSION   LIFTER BORE BRACE

POLY-LOCK ADJUSTMENT POLY LOCK NUT ADJUSTMENT FOR HYDRAULIC CAMS 1) INSTALL POLY-LOCK WITH HEX END UP. THREAD IN SET SCREWS A FEW TURNS WITH HOLLOW HEX END UP. 2) MAKE SURE LIFTER IN ON THE HEEL OF THE CAM. 3) IN ORDER TO GET A "FEEL" FOR THE PRESSURE OF PUSHROD AGAINST LIFTER CUP, PUSH THE PUSHROD INTO THE LIFTER BY HAND SO YOU CAN FEEL IT'S SPRING TENSION. TIGHTEN POLY LOCK SLOWLY WHILE MOVING THE PUSHROD UP AND DOWN, BEING CAREFUL TO STOP TURNING THE POLY-LOCK JUST AS THE PUSHROD TOUCHES THE LIFTER CUP, AND THE UP AND DOWN FREE PLAY IS TAKEN UP. 4) NOW TURN THE POLY LOCK ONE MORE "FLAT", OR A SIXTH OF A TURN. HOLD THE POLY LOCK IN THAT LOCATION WITH A BOX END WRENCH. TURN THE INSIDE ALLEN SET SCREWS DOWN UNTIL IT CONTACTS THE ROCKER STUD. SNUG IT WITH THE PALM OF YOUR HAND. DO NOT TIGHTEN! 5) WITH THE BOX END WRENCH IN ONE HAND AND THE ALLEN WRENCH, TURN BOTH TOGETHER UNTIL THEY TIGHTEN, OR APPROXIMATELY 25 FT. LBS. THEY MUST BE TIGHT, BUT YOU DON'T WANT TO BE AN APE EITHER. USE COMMON SENSE. When unsing a stock rocker stud, remove them first and file the top flat for positive allen screw contact. BMF WARNING! YOU CANNOT PROPERLY TIGHTEN POLY LOCKS BY JUST TURNING THE ALLEN SET SCREW.