.006 cold lash adjustment turns into zero or so when warm......Things expand
in the motor and take up that clearance..........
Adam P
81  Westy "The Brick "
70 Single Cab "Whitey"
74 Beetle "Ol Yeller"
73 Transporter (STILL at paint shop)
1988 Vanagon Wolfsburg
75 Campmobile "for sale'
Used Vanagon Parts for sale (mostly aircooled)
----- Original Message -----
From: "Mark Ingalls" <ingalls_mark@HOTMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Friday, August 30, 2002 7:16 AM
Subject: Re: Losing valve lash just after adjustment-why?

> Please keep us informed on what you find out about this. I plan to go to
> .006 soon.
>
> Thanks,
> Mark Ingalls
> 85 GL
>
>
> >From: Tim Marciniak <tmarciniak@WI.RR.COM>
> >Reply-To: tmarciniak@WI.RR.COM
> >To: vanagon@GERRY.VANAGON.COM
> >Subject: Losing valve lash just after adjustment-why?
> >Date: Thu, 29 Aug 2002 20:38:37 -0500
> >
> >Just did a compression test and two cylinders were low @ 100 and 106.
> >Heads done about 20,000 miles ago by a VW mechanic (not dealer).  Van
> >has ran pretty well since them but lately I have developed a lumpy
> >idle and low manifold vacuum (10-12).  I researched everything I
> >could find on the age old valve lifter issue including a call to Bob
> >at Boston Engine were I purchased my heads from.  Followed his
> >instructions and adjusted the valves to .006 inch valve lash.  I
> >adjusted both intake and exhaust when engine cold.  Just to be really
> >thorough I rechecked them almost immediately after I adjusted them
> >(did not rotate the crank yet) and I swear I was back to zero
> >clearance so I readjusted again but did not recheck again cause i
> >wanted to finish and the mosquitos were really bad last nite.  I also
> >checked all the valves for clearance before I adjusted and I could
> >not get a .006 inch feeler gauge in on any of them--I am suspected my
> >mechanic may of installed these heads the old way (preloading) and I
> >am starting to see problems  now.  My question is why did I lose this
> >.006 inch clearance just moments after I made the adjustment?
> >
> >I did start the engine up after adjusting all the valves and it ran
> >pretty much the same, initially the manifold vacuum was about 14 but
> >then dropped to 11-12 after the engine warmed up and idle was lumpy.
> >
> >Could it be the lifters are doing something strange?  I am running
> >20W-50 for the summer.
> >
> >Tim
> >--
>
>
>
>
> Mark Ingalls
> Nebraska City
> 85 GL w/ dash mounted digi-tool, H4s with relays, Agilis tires, needs a
> stereo.....
>
>
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