Bob Donalds wrote:
>
> John wrote:
> >
> > Hi David,
> >
> > I've seen all the industry general guide lines about storing
> > un-installed lifters in certain positions and pre-filling lifters by
> > pumping them in warm oil baths but I can't buy any of it.
> >
>
>
> John and the list
> If you think for a moment that the VOA factory follows bentley to the
> letter
> then I have a bridge for sale I would like to talk to you about

Hi Bob,

I've been away so I'm just responding to your reply. You should know
that I'm a supporter of Boston Engine and I hate VWoA. If you could
strap those creeps into Ol' Sparky, I'd love to throw the switch.
However there is nothing new in 40 years in the function of hydraulic
lifters and VW is a competent engine designer. As  I wrote previously, I
torched my exchange motor and and it went from trashing machine volume
to a quiet, smooth running motor while I drained a 6 pack. That's the
nature of hydraulic lifters.

When the lifter contains COMPRESSIBLE air there is lash and a "door"
opens and pressurized engine oil despells and takes the place of the
air. When the lifter is full of NON-COMPRESSIBLE oil there is zero lash
and the "door" doesn't open and the self-adjustment ceases at the
engineered nominal clearance. Aside from the basic set up installation
adjustment, subsequent mechanical adjustments make no sense.

Trying to adust a hydraulic lifter is a little like trying to adjust the
Digifant idle speed. Mechanically you can cause a change but the system
design will simply counter your effect. Vanagon owners who are "green"
to the the hydraulic lifter valve train should stay away from trying to
adjust an automatic system. If hydraulic lifters need adjustment they
were never set up correctly in the beginning.

Bacj to you Bob,         JP