Alignment with ductile-iron rockers?
Most all the after market iron rockers such as Crane came with the springs and adjuster lock nuts. I used the springs for years with no issues at High RPM's . Would the shims be an upgrade? I believe they would be, To control side to side movement.
Shimming them for better alignment to the stem would be better. But I always used them as they were out of the box from crane with the springs.
The Big block Crane rockers also came with springs. Here is a set of Cranes that came on a BB we bought out of a barn. Notice the first rocker is out of alignment and could use a shim opposite the spring. Could the spring cause wear of the rocker shaft bolt spacers without a hardened shim against it? Probably over time that small tab could wear from pressure from the spring. This rocker assembly below are new this engine was never fired as can be seen in the pictures.
Most all the after market iron rockers such as Crane came with the springs and adjuster lock nuts. I used the springs for years with no issues at High RPM's . Would the shims be an upgrade? I believe they would be, To control side to side movement.
Shimming them for better alignment to the stem would be better. But I always used them as they were out of the box from crane with the springs.
The Big block Crane rockers also came with springs. Here is a set of Cranes that came on a BB we bought out of a barn. Notice the first rocker is out of alignment and could use a shim opposite the spring. Could the spring cause wear of the rocker shaft bolt spacers without a hardened shim against it? Probably over time that small tab could wear from pressure from the spring. This rocker assembly below are new this engine was never fired as can be seen in the pictures.
