Whats the difference in more or less lifter preload on hydraulic lifters. Right now if preload 1/2 turn. Ive read that some preload 1/4 turn. Any difference?
the more preload you do, the more it'll pump up at higher rpms due to excess oil pressure. you can run em at zero + 1/8 a turn preload and get alittle more outta a cam. some peeps will run zero lash and that's it, but i'd worry about em comin apart without good retainers in the lifter.