Hydraulic lifter preload

The reason you hear different amounts of “turns” past zero to set preload is because it depends on the lifter you are using and what the thread pitch on your adjusters is. Find out what comp wants those lifters to run at, (usually they give a range like .030-.060) and then calculate how far you have to turn your adjuster to get that amount. Or you can just turn them 1/2 turn past zero and be on your way.