[Vwdiesel] mkII diesel valve adjustment

[mark shepherd]

----- Original Message ----- 
From: <LBaird119 at aol.com>
To: <Vwdiesel at vwfans.com>
Sent: Monday, December 05, 2011 4:15 PM
Subject: Re: [Vwdiesel] mkII diesel valve adjustment


>
>
> In a message dated 12/5/2011 5:26:39 A.M. Pacific Standard Time,
> mark at shepher.fsnet.co.uk writes:
>
> On these  old engines, I'd be more inclined to grind a couple of thou off
> the
> valve  stem. Valves wear down and sink into the head  naturally.
>
>
>
>
> I'll do that when rebuilding a head but would never consider doing  that
> for a valve adjustment.  I suppose you COULD do it by pulling the cam,
> lifters, guessing how much you take off, not square and risking getting
> grit in the engine.  Otherwise you have to pull the head.  A  little too
> time consuming compared to swapping to one or two thinner shim.
>    Loren

Shuffling shims is what I did with this engine, as I tried to remove a 0 
thou on an exhaust.  There were other low ones as well, like 6 and 4 on 
inlets. None were at the top end of spec. I only ground the one, and it was 
the exhaust, as the best I could do with shuffling, was turn it to 3. 
Stuffed an oily rag round the spring,  and draped over the rest.
I don't think shims are available here anymore, and my other  2   Quantums 
are hydraulic.


What happens when valves sink in hydro engines?

Mark

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