Ok, that makes sense when things warm up but I did not even move the
crankshaft.  I think it must be some hydraulic property or the
trapped air in the lifter problem.

Tim

>.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.....
>>
>>
>>  _________________________________________________________________
>>  Chat with friends online, try MSN Messenger: http://messenger.msn.com
>>

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