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______ is a comparison of the distance between the rocker shaft or fulcrum point of the rocker arm and the distance to each end of the rocker arm.

A. Valve lift
B. Rocker ratio
C. Valve timing
D. Camshaft position

Answer :

Final answer:

The rocker ratio (option b) is the comparison of the distance between the rocker shaft or fulcrum point of the rocker arm and the distance to each end of the rocker arm. It is an important concept in engine tuning involving the degree of valve opening and closing.

Explanation:

The comparison of the distance between the rocker shaft or fulcrum point of the rocker arm and the distance to each end of the rocker arm is called the Rocker ratio (option b). It is a key component in understanding how much the valves in an engine open and close in relation to the cam lobe, as it translates the cam lobe lift into valve lift. Simply put, if your cam lobe lifts .350" and you have a 1.5 rocker ratio, your valve would lift .525" (because .350 * 1.5 = .525). This principle is crucial in building and tuning engines to achieve optimal performance.

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