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Rocker Arms



Rocker Arms

In a typical overhead valve (OHV) engine, the valves are actuated by a pushrod and rocker arm. The pushrod is connected to the camshaft, which opens and closes the valves according to the intake and exhaust strokes of the engine. The other end of the pushrod is connected to the rocker arm, which in turn presses on the valve stem, opening or closing the valve.

Rocker arms come in different designs, including roller tip and fulcrum. Roller tip rockers have a roller at the end of the lever that rolls on the valve stem as it actuates the valve. Fulcrum rockers have a pivot point that contacts both the pushrod and valve stem.

Rocker arms are generally made of forged steel for strength, although some aftermarket rockers are made of aluminum for weight savings. The rockers must be able to withstand the high spring pressure of the valves as well as the centrifugal force created by the rotating engine parts.

One end of the rocker arm is raised and lowered by a cam lobe, while the other end actuates a valve lifter. The motion of the cam lobe forces the rotation of the entire rocker arm. As the rocker arm rotates, one end goes up while the other goes down, causing the valve to open or close.

Rocker arms are used in most modern engines, though some older engines used pushrods and lifters instead. Rocker arms offer a number of advantages over pushrod systems, including increased durability and performance

Benefits:

  • Increase durability and are less likely to bend or break than pushrods
  • Improve engine performance and valve timing and airflow through the engine
  • Save weight compared to steel designs which is beneficial in racing applications

Why You Should Install New Rocker Arms

  • Improve the performance and durability of your engine
  • Ensure that all the moving parts in your engine are new and working together correctly
  • Ensure that your engine is running at peak performance

Find Rocker Arms Only at Vivid Racing

Vivid Racing offers the best prices on rocker arms. We carry the different brands of rocker arms within the continental United States.

If you're looking for new rocker arms, be sure to check out our website. You won't find a better price or quality anywhere else. Order yours today from Vivid Racing!

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