Bob,

All of this valve adjusting procedures talk can be confusing.  When I
installed your rebuilt engine, I adjusted the valves as per your
instructions.  This predated the .006 clearance theory.  I believe you had
me set them at 1/2 turn preload.  In any case, it worked just fine.  The
valves were always quiet.  I now have about 45,000 miles on this engine and
for the last few thousand miles the valves are noisy on start up.  Not all
of them of course, but certainly one or maybe two are.  What can I do?
Should I set them all at .006 clearance, let them pump up & then set them at
zero lash?

Walt Spak
Pittsburgh, PA.
wnsopc3@3rdm.net

----- Original Message -----
From: Robert Donalds <bostneng@FCL-US.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, January 09, 2002 8:14 AM
Subject: Re: clarify .006 on lifters

Myron
I am not sure you need to do anything to the valve adjusters on a good
running engine. if it ant broke don't fix it. my recommendations are for
engine that have been taken apart for what ever reason or for engines that
have symptoms. The newest Bentley book says preloading is optional. this is
because of the problems that can go along with it. lifters with air in them
can hold the valves open when the engine warms up, lower the manifold vacuum
at idle and shorten valve and valve guide life
B.Bob