Rocker arm bushing inserts

Abstract

Harley Davidson motorcycles motors have a gap between the rocker arm shaft and the cam plate bolt, this bolt is supposed to lock the rocker arm shaft but because of the gap the shaft rotates with the rocker arm, hitting the bolt causing an annoying tick. The Rocker arm bushing inserts go between the rocker arm support plate bolt and the rocker arm shaft locking the shaft and preventing it from rotating and hitting the bolt that cause an annoying tick. The bushings are called Rocker arm bushing inserts. Each cylinder head requires two inserts, or four per motor. Inserts can be made from any material and length can vary. Inserts must fit inside a 11/32 hole and around a 5/16 bolt shank.

1 . The rocker arm bushing inserts fit between the bolt and the rocker arm shaft locking the shaft from turning and eliminate the shaft from rotating and hitting the bolt, eliminating the annoying tick that so many Harley motors witness. 
     
     
         2 . The Rocker arm bushings also center the rocker cam support plate so that it is always located in the same position eliminating different wear patterns on the rocker arm/valve and better alignment of the pushrod in the holes.