Run the tappet to .200 lift. Take a measurement. Keep rotating the engine until the lifter is back at .200 and read the degree wheel again. Add the two together and divide by 2. That's the installed centerline.
Respectfully, A lot of lobes aren't symmetrical, some open faster than they close etc. So wouldn't using a high .200" lift reference value be potentially inaccurate using this method? I would have thought a much smaller lift figure like 0.006" would be better for accuracy on lobes of all shapes.
