What is the valve lash adjustment for 1996 prelude?

Answer 1

A valve lash adjustment refers is a maintenance procedure performed on some kinds of engines. In many high RPM engines, including many Honda models, the rocker arms in the valve train are known as a "solid lifter" design. Over time as the engine accumulates operation time, some free play will develop in the rocker arms and the cams. To account for this, the rocker arms have adjustors designed into them to take up the slack. If a valve lash adjustment is not performed it is possible for the engine become less efficient and make more noise slowly over time.

Performing a values adjustment requires removal of the valve cover and a feeler tool to measure the free play in the valve train. In the case of the inline VTEC 4 cylinder in the Prelude, the engine must be rotated 90 degrees so that each piston is at TDC before the four measurements and subsequent adjustments can take place. The engine also needs to be completely cool before making an adjustment.

Generally only high performance engines need valves adjustments. Engines with hydraulic lifters do not need valve adjustments because the lifter automatically takes up slack in the valve train. High engine speeds require having a solid lifter design because a hydraulic lifter will experience "valve float" at very high engine speeds meaning that the valves will not completely open or close at maximum RPM.