Hyundai Sonata Forum : “torque spec for rocker arms for 2.4 engine”

Typically the method I use when doing valve jobs when tightening the rocker arms is to tighten them all loosely, run the engine, and tighten each one until it stops ticking, then add 1/4 turn.  It almost has to be done this way.  Torque specs are a suggestion but you sometimes have to do it by feel and listening.  That said, a dealership should be able to give you the torque spec if you call their parts dept.