Date: Mon, 17 Feb 2003 20:40:58 -0600
Reply-To: Stan Wilder <wilden1@JUNO.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Stan Wilder <wilden1@JUNO.COM>
Subject: Re: Question about barrel spacers
Content-Type: text/plain; charset=us-ascii
No problem with the shims Tom.
I just wanted you to remember that air cooled AMC heads don't use head
gaskets.
One of the recent post suggest that you seat the individual cylinders to
the head mating surface.
I see the mating of the head / cylinder as a worthwhile 20 minute
procedure.
Whether it be a .010 0r .020 shim will make very little difference in
your performance.
Just out of curiosity ........... what cc did you get for the combustion
chamber of the head?
I've got about 15K on my newly rebuilt Type IV with new AMC heads and I
seldom run hotter than 350 CHT on #3 even at hard driving and ambient
temperature of 100 degrees (f).
I have forecasted my CR as 7.4 with the .028 deck height and I'm very
pleased with the performance and dependability.
Stan Wilder
83 Air Cooled Westfalia
On Mon, 17 Feb 2003 18:09:44 -0800 Tom Young <tomyoung1@ATTBI.COM>
writes:
> I bought these heads new many, many years ago and read that piece of
> paper
> at the time.
>
> Since I cc'd each head and measured all deck heights I know that a
> .020"
> shim will give me:
>
> Left side Right side
> ------------------ -----------------
> 7.3 7.3 7.3 7.31
>
> which is about as perfect as you can get.
> ---------------------------------------------------------------
> Tom Young '81 Vanagon
> Lafayette, CA 94549 '82 Westfalia
> ---------------------------------------------------------------
> ----- Original Message -----
> From: "Stan Wilder" <wilden1@juno.com>
> To: <tomyoung1@ATTBI.COM>
> Cc: <vanagon@GERRY.VANAGON.COM>
> Sent: Monday, February 17, 2003 3:50 PM
> Subject: Re: Question about barrel spacers
>
>
> > If you bought your AMC heads new there is a YELLOW paper in the
> box that
> > says .......... DO NOT USE HEADGASKETS with these heads.
> > I hope you understand this this is a serious reply and AMCs do not
> use
> > head gaskets.
> > I use .010 aluminum base shims to get .028 deck height and 7.4
> > compression.
> >
> > Stan Wilder
> >
> >
> > On Mon, 17 Feb 2003 14:56:47 -0800 Tom Young
> <tomyoung1@ATTBI.COM>
> > writes:
> > > I've seen this tech bulletin, but I'm not sure what you mean
> when you
> > > say
> > > "blow off the barrel spacers." The heads on this engine are
> AMC
> > > heads so I
> > > can't eliminate the "aluminum seal 021 101 341A between
> cylinder
> > > and
> > > cylinder head" and the bulletin specified substituting 1.6mm
> (.063")
> > > barrel
> > > spacers ("aluminum shim 071 101 341") in place of the paper.
> > >
> > > I'm going to install .020" barrel spacers in place of the .030"
> ones
> > > that
> > > are there. Since I cc'd the heads and measured the deck height
> > > prior to
> > > putting the engine together I know what the CR is and what it
> will
> > > be.
> > > ---------------------------------------------------------------
> > > Tom Young '81 Vanagon
> > > Lafayette, CA 94549 '82 Westfalia
> > > ---------------------------------------------------------------
> > > ----- Original Message -----
> > > From: "Stan Wilder" <wilden1@JUNO.COM>
> > > To: <vanagon@GERRY.VANAGON.COM>
> > > Sent: Monday, February 17, 2003 12:20 PM
> > > Subject: Re: Question about barrel spacers
> > >
> > >
> > > > http://www.dolphinsci.com/techbull.html
> > > > Read this .............. blow off the barrel spacers unless
> you
> > > can get
> > > > the .010 aluninum shims or paper from VW dealer.
> > > >
> > > > Stan Wilder.
> > > >
> > > > On Mon, 17 Feb 2003 10:58:08 -0800 Tom Young
> > > <tomyoung1@ATTBI.COM>
> > > > writes:
> > > > > Hi all:
> > > > >
> > > > > When I rebuilt a couple of Vanagon air-cooled engines a few
> > > years
> > > > > ago I
> > > > > noticed the barrel shims (the ones that go between the foot
> of
> > > the
> > > > > cylinder
> > > > > and the crankcase) had "ridges" or raised metal around the
> > > inside
> > > > > and
> > > > > outside circumferences caused, I guess, by the process of
> > > stamping
> > > > > them out
> > > > > of sheet metal. I spent some time lightly sanding down
> the
> > > ridges
> > > > > to a
> > > > > certain extent before installing them.
> > > > >
> > > > > I just ordered some new shims from the Bus Depot - I'm
> going to
> > > > > increase
> > > > > the compression ratio of one of the engines slightly - and
> these
> > > too
> > > > > have
> > > > > ridges. So, the question:
> > > > >
> > > > > Is it really necessary to try and eliminate these ridges
> left
> > > over
> > > > > from the
> > > > > production process, or is it OK to install them "as is?"
> > > > >
> > > > > I can't imagine VW doing anything about these ridges back
> when
> > > they
> > > > > were
> > > > > manufacturing these engines and, for all I know, the ridges
> get
> > > > > folded back
> > > > > out as a result of the pressure created when the heads are
> > > bolted
> > > > > into
> > > > > place.
> > > > >
> > > > > Anybody have any thoughts?
> > > > >
> > > > > TIA.
> > > > >
> ---------------------------------------------------------------
> > > > > Tom Young '81 Vanagon
> > > > > Lafayette, CA 94549 '82 Westfalia
> > > > >
> ---------------------------------------------------------------
> > > > >
> > > > >
> > > >
> > > >
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