This tool assists in determining the correct thickness of shims required for adjusting valve clearance in internal combustion engines. Typically, it involves inputting measured clearances and desired clearances, along with the thickness of currently installed shims. The tool then calculates the necessary shim thickness for optimal engine performance. For instance, if a current shim measures 2.50 mm and the desired clearance necessitates a change of +0.05 mm, the tool will recommend a 2.55 mm shim.
Precise valve clearance is crucial for proper engine operation. Incorrect clearances can lead to reduced power, increased fuel consumption, excessive valve train wear, and even catastrophic engine failure. Historically, determining the correct shims was a tedious trial-and-error process. This automated approach significantly simplifies the process, saving time and ensuring accuracy, which ultimately contributes to engine longevity and performance.