Rocker Pivot Shaft at Ruth Madison blog

Rocker Pivot Shaft. Since the rocker arm pivot point is fixed on a shaft system, the lash adjuster location moves to the pushrod end of the rocker arm. The small block had a rocker pivot length of 1.4 inches versus 1.65 inches for the rockers on the big block motor. With a modern jesel shaft rocker layout, the pivot can be moved further away from the valve which in turn allows for the longer rocker pivot length. Essentially, the new jesel shaft rockers were a means to improve upon the rocker geometry of a small block chevy. The shaft rocker system wasn’t bound by the rocker stud location on the cylinder head, and it allowed dan jesel to move the rocker in a position on the head where it wasn’t scrubbing. Reducing mass in a rocker arm is especially important at high engine speeds, so adding an adjuster on this end must be done with an eye toward reducing weight. The advantage of a shaft mount involves improved valvetrain stability. They pivot on a common shaft instead of individually on rocker studs or bolts. They are more adaptable to constantly changing cylinder. With some shaft rocker arm arrangements, it’s also possible for the manufacturer to lower the pivot point.

The advantage of a shaft mount involves improved valvetrain stability. The small block had a rocker pivot length of 1.4 inches versus 1.65 inches for the rockers on the big block motor. Essentially, the new jesel shaft rockers were a means to improve upon the rocker geometry of a small block chevy. With some shaft rocker arm arrangements, it’s also possible for the manufacturer to lower the pivot point. With a modern jesel shaft rocker layout, the pivot can be moved further away from the valve which in turn allows for the longer rocker pivot length. They pivot on a common shaft instead of individually on rocker studs or bolts. Reducing mass in a rocker arm is especially important at high engine speeds, so adding an adjuster on this end must be done with an eye toward reducing weight. They are more adaptable to constantly changing cylinder. The shaft rocker system wasn’t bound by the rocker stud location on the cylinder head, and it allowed dan jesel to move the rocker in a position on the head where it wasn’t scrubbing. Since the rocker arm pivot point is fixed on a shaft system, the lash adjuster location moves to the pushrod end of the rocker arm.

Jesel Pro Series Aluminum Shaft Rockers for SBF Brodix 15° Head Hunters

Rocker Pivot Shaft Since the rocker arm pivot point is fixed on a shaft system, the lash adjuster location moves to the pushrod end of the rocker arm. With a modern jesel shaft rocker layout, the pivot can be moved further away from the valve which in turn allows for the longer rocker pivot length. They pivot on a common shaft instead of individually on rocker studs or bolts. The small block had a rocker pivot length of 1.4 inches versus 1.65 inches for the rockers on the big block motor. They are more adaptable to constantly changing cylinder. The shaft rocker system wasn’t bound by the rocker stud location on the cylinder head, and it allowed dan jesel to move the rocker in a position on the head where it wasn’t scrubbing. Essentially, the new jesel shaft rockers were a means to improve upon the rocker geometry of a small block chevy. The advantage of a shaft mount involves improved valvetrain stability. Reducing mass in a rocker arm is especially important at high engine speeds, so adding an adjuster on this end must be done with an eye toward reducing weight. With some shaft rocker arm arrangements, it’s also possible for the manufacturer to lower the pivot point. Since the rocker arm pivot point is fixed on a shaft system, the lash adjuster location moves to the pushrod end of the rocker arm.