How do you calculate valve lash?
How do you calculate valve lash? To determine the valve lash, subtract the squish from the desired valve opening lift. The cam in the graph is for a flathead, using squish of 0.002" the valve lash should be 0.0127" or 0.013". The exhaust could be set a couple thousandths larger to allow for thermal expansion. How do you set the valve lash on a hydraulic lifter? Make sure that the dampener bolt is installed in the crankshaft, turn the engine over by hand in the direction of its normal rotation. Setting valve lash on hydraulic lifters does not require a...