A broken lifter is the most destructive component failure short of a broken connecting rod. Every time we overhaul a motor, we examine the used roller lifters very carefully. We install the highest quality lifters we can find, but our experience (and the statistics) proves that there will be random problems.

      A simple act of preventive maintenance like routinely checking valve lash can save a racer a lot of money. If the lash is just where you set it, be happy - but please don't forget to check it again before the next race.