Hi all,
Just a quick question

when setting cam timing with vernier pulleys and hydraulic lifters,
Do you guys make any allowance for 'lifter pump' at higher RPMs?
As what you set at, say 1.25mm lift at TDC, might become 1.3 or more
at say 6500+ rpm.. throwing the settings out a little bit.

do the lifters pump up enough at high RPM to make it worth even worrying about?


thanks!