<VV> Adjusting Valves

[Sethracer at aol.com]

It is like religion, John - People hold their own beliefs, and are not  
particularly interested in changing. It also matters what your intended usage  
is, and whether all the parts are brand new. On my race car, I use 1/4 turn, 
 because I do not want the lifters to pump up much when I float the valves. 
On a  street car, which I want to start up quietly, when I wait a week 
between running  it, a half a turn or a bit more is fine. If you have all new 
parts, and the  internal plunger won't find any internal resistance to full 
travel - a full turn  might be fine. Most used lifters will have deposits 
inside that may keep the  plunger from moving down all the way. My suggestion? 
Start at one-half a turn.  If you have a noisy lifter  - or two - on cold 
startup? Try cranking those  down to 3/4 turn. I have never used a full turn. - 
Seth Emerson
 
 
In a message dated 6/18/2012 10:56:07 P.M. Pacific Daylight Time,  
32chevy at 0306.org writes:

Some of  the books say to turn the rocker nut 1/2 turn after reaching 
zero lash but  the
Shop Manual says turn the rocker nut one full turn after zero  lash.    
Which is correct ?

John  Howell