Hydraulic Tappet - Big Twin
These tappets will run in cast iron or aluminum tappet blocks, Recommend fitting the tappets to the blocks with a clearance of .0007" to .0012", Produced from billet bearing steel, A true center-line for roller life and exact cam timing, State of the art pushrod seat, machined with the same segmented parabolic cup as the JIMS® roller rockers, Hand fit hydraulic unit to a running fit of .0002", with ultra precision air gauging system