[Vwdiesel] homemade valve compressor

[Erik Lane]

Hmmm... that's not the way I remember it. I took a
class in engine rebuilding at the local community
college something like 10 or 12 years ago and we
actually replaced guides on a few heads - but we had
to use a special head machine that first drilled out
the old ones. Then we pressed in the new ones and
machined the top to the right shape. But my memory
isn't very trustworthy, so I might be off.

But the valve slop tests that we did I remember always
doing with the old valves. Seems it was the first
thing we did right after removing the keepers and
springs and before the valves came out of the head.
But that wasn't on a VW diesel head, which I've never
done anything on. If there was slop then the guide
needed replacing for sure. Then you checked the valve
stem. (Again, that's the way I remember it, but my
memory isn't always the best.)

I'm shocked that you could move the valve around that
much without losing oil. I guess your seals were VERY
pliable. Good news for him - I hope it holds well
enough to at least last him until better weather to
work on it, and maybe it will last until a rebuild? At
this point it sounds like it's definitely worth
trying!

Erik

--- gary <gbangs at cfl.rr.com> wrote:

> That may well be true, but the valve slop test is
> supposed to be done
> with a 'new' valve in the guide.
> 
> Still, I don't see how valve seals could cause his
> horrendous oil
> problem.
> 
> I've had a Rabbit where I could literally move the
> valve head a good
> 3/32in side-to-side (old valve, old guide) and
> didn't burn a drop of
> oil.
> 
> Bart, while the VC is off, snake a wire down all
> (four of them?) of the
> oil drains to be sure they are clear.
> 
> 
> -Gary 
> 
> On Wed, 2004-11-24 at 15:14, Erik Lane wrote:
> > --- Bart Wineland <bwinelan at allegheny.edu> wrote:
> > 
> > First off, that looks like a good tool! Well done!
> > (tho I don't have any experience having to pull
> valves
> > on these - I have taken a couple heads to be
> rebuilt
> > and let them do it.)
> > 
> > 
> > > replaced. Tonight I should be able to finish up.
> I
> > > checked the valves for 
> > > any lateral play in the guides and can feel the
> > > slightest play in the 
> > > exhaust valves but barely anything in the
> intakes so
> > > I am hoping the guides 
> > > are ok.  
> > 
> > Unfortunately it sounds like your head needs
> attention
> > - those valve guides need replacing. The general
> rule
> > is if you can feel the slop by hand then it's over
> the
> > limits. So I doubt that the new seals will last
> long -
> > the valves just have too much play. At this point
> that
> > you've already gone to the trouble to make up the
> tool
> > and have most of them replaced I wouldn't blame
> you to
> > try it anyway. 
> > 
> > Sorry - I hate being the bearer of bad news.
> > Erik
> > 
> > 
> > 
> > 		
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> 



		
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