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no adjustment necessary tighten to torque spec make sure puh rods are in proper position. exahust is longer than intake
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The stock rocker is made by stamping a flat piece of steel having a large die. Stamped steel parts are never same and the part is normally designed so that high tolerance is not very important for it. The first step to modeling the stock rocker arm was measure the part; this is done using a digital caliper accurate to 0.001. The stock rocker rolling center was estimated as the rocker pivots on a stud and does not have a center ready for measuring. It is also the contact point where the nose of the rocker Page 6 Stock Rocker vs. Roller Rocker contacts the tip of the valve was estimated. The software Solid Works was then consumed to build a three dimensional model of that part. The stock rocker was an extruded entity required for the side profile of the rocker, which was then affect at the edges to create a solid block of the same dimensions as the actual rocker. The design of the roller rocker is significantly different from the stock rocker. The roller rocker has the components which reduce the friction, and other stiffening components, and weight/inertia reduction aspects. These types of Rockers are commonly used in racing applications and areas where the highest possible efficiency and power output is required. The roller rocker is specially designed for high performance application and therefore it is made with the smallest amount of material possible to control the rotational inertia of the part. The stock rocker was configured for a normal everyday driving application, so it has many qualities that show the desired 100,000 miles or greater life for the motor and cheap and fast manufacturing as well. Another important point that requires to be considered is that the dynamic loads on the stock rocker are not going to be as great as the dynamic loads that the roller rocker experiences.
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