Rover SD1 V8 Rocker Gear
The parts listed are suitable for all engines unless otherwise stated.
What is Lifter Preload?
"Lifter preload" refers to the position of the pushrod seat in the lifter (cam follower) when the engine has been assembled and the lifter is positioned on the heel of the cam. Lifter preload must be checked whenever a non-standard component which alters the distance between the rocker arm and the lifter - such as a high lift camshaft or performance cylinder head - has been fitted. Incorrect lifter preload will cause poor running, premature wear or, at worst, engine failure.
Check the lifter preload as follows: