roller rocker arms

rainman39393

New Member
Feb 28, 2007
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I am installing harland sharp roller rockers on some brand new heads and I have a question about it. I have found alot of walkthroughs for hydraulic cams but I have a mechanical cam and am not sure if there is a different process for it. from what I understand I have to rotate the engine to top dead center for the first cylinder and then keep rotating for each cylinder so that the lifters are in the lowest possible position when i tighten down the rocker arms. I am unsure of the best way to do this. could someone please walk me through installing them? thanks
 
The easiest is to remove all the plugs and get a switch that connects to the solenoid w/ clips and bump the engine over little by little and bring each cylinder to TDC. You can stick your finger in the plug hole as you are cranking the engine(bump it though) when you hear the air rush out you are close. Then you manually rotate the crank and watch the rocker arms to stop moving, they should be level w/ each other. At that point you ad just them. Repeat the process for all the remaining cylinders. The factory Manual has details on the specifics and where to mark the crank pulley to show which cylinder is at TDC.
 
the only difference in setting the valves between a hydraulic cam and a solid lifter cam is that with the solid lifter cam you need to set a small clearance using a feeler gauge, usually about .017" depending on the cam manufacturer.
 
Hi, While the lash setting may be true, you still need to insure the lifter is on the base circle of the cam. Rotate the engine CC , while watching the valve action of anyone cyl. As the intake closes, the exhaust should then begin to rise, this is the point at which to adjust intake (valve fully closed, clearance in the rocker) The opposite is true for the exhaust. Good Luck!