Date: Mon, 17 Feb 2003 21:36:55 -0800
Reply-To: Tom Young <tomyoung1@ATTBI.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Tom Young <tomyoung1@ATTBI.COM>
Subject: Re: Question about barrel spacers
Content-Type: text/plain; charset="iso-8859-1"
The measured range was from a low of 54.5 to a high of 57.
---------------------------------------------------------------
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 6:40 PM
Subject: Re: Question about barrel spacers
> 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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> >
>
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