[T3] ? Mystery of the Clacking Valves ?
sploogemeister
sploogemeister at sbcglobal.net
Thu May 12 20:12:06 PDT 2011
Okay Jim, then the lifter may be worn, but wouldn't that mean there's
a good chance the lobe of the cam may be worn as well, since they
wear together.
--- On Fri, 5/13/11, Jim Adney <jadney at vwtype3.org> wrote:
> From: Jim Adney <jadney at vwtype3.org>
> Subject: Re: [T3] ? Mystery of the Clacking Valves ?
> To: type3 at vwtype3.org
> Date: Friday, May 13, 2011, 12:52 AM
> On 12 May 2011 at 11:43,
> sploogemeister wrote:
>
> > Does your oil have a high ZDDP content? I've been
> seeing a lot of
> > "flat cams" lately because of the "wrong" oil. Your
> symptoms are
> > similar to what I've been seeing. Do you have a way to
> measure the
> > actual lift of the cam? Without the ZDDP, both the
> cams and the lifters
> > wear incredibly fast, increasing rocker gap.
>
> Except that will wear off the high part of the cam and
> leave the
> "flat" part, where the valve lash is adjusted, untouched.
>
> Well, I guess wear to the lifter would show up everywhere,
> so you
> would see some fraction of the total wear when adjusting.
>
> --
> *******************************
> Jim Adney, jadney at vwtype3.org
> Madison, Wisconsin, USA
> *******************************
>
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