Explain to me again, please

[Glenn Briglio]

Originally Posted by SSDiv6

The basics for setting up the valve geometry is simple.

Use a pushrod length checker, the rockers you are plan to use in your engine and a solid lifter at Zero lash.

Use Dykem or a marker at apply it to the tip of the valve. Rotate the engine several times, remove the rocker arm and check the contact pattern of the rocker tip against the tip of the valve.

The contact pattern on the tip of the valve should be centered and as narrow as possible. Adjust the pushrod length checker until you achieve the optimum contact pattern, measure the length of the checker and order the appropriate pushrod length.

The contact pattern is rarely centered but getting it as narrow as you can is good.