It's the heat that expands the steel parts. The various parts just expand and consume that .006. Various parts = Lifters, Rocker Arms, Valve Stems, Pushrods, valve seats. Check out .006 on a feeler gauge, it's about 1/2 as thick as typing paper. Stan Wilder ----- Original Message ----- From: "Daniel L. Katz" <katzd54@YAHOO.COM> To: <vanagon@GERRY.VANAGON.COM> Sent: Sunday, June 27, 2004 9:45 PM Subject: Re: Hydro lifters (# of turn)
> list: > > interesting. but does the .006 disappear because the hydraulic lifter > pumps up, or because a film of oil is created, or what? > > surely the .006 in the solid lifter case could not disappear becuase of > heat alone - the gap itself would be expected to increase roughly in > proportion to the overall thermal expansion of the engine as it warms up. > > dan > > On Fri, 25 Jun 2004 13:55:46 -0500, Stan Wilder <wilden1-1@SBCGLOBAL.NET> > wrote: > > >That .006 just disappears when the engine gets warm. The lifters will run > >very quiet other than the occasional clatter when you start in the > mornings. > >I run .006 on the intakes of solid lifters on my Porsche and the .006 > >tightens right up to be total silent with just a little heat. > > > >Stan Wilder > > |
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