Thanks Geo.
 
> Date: Tue, 13 Apr 2010 16:41:11 -0700
> From: ahwahneevw@GMAIL.COM
> Subject: 1984 Speedos
> To: vanagon@GERRY.VANAGON.COM
> 
> On 4/13/10, Jamie Fitterer <fittdog8848@hotmail.com> wrote:
> >
> > not to hijack this engine post,,,,,,,but if anyone has fixed an 84 speedo or
> > re-calibrated one let me you know. I have one that is horribly off and was
> > hoping to not have to replace it.
> 
> Hi Jack,
> 
> I think the '84s were factory-designed to be way off.
> 
> My understanding is that around 1983 there was a federal requirement
> that speedos not indicate less than actual speed. Some manufactures
> (including VW) made double-darn sure that would not happen by building
> in a huge error on the high side.
> 
> There is even a formula in the Bentley (p 90.30) for the 84 model year
> to compute your actual speed based on what the instrument says.
> Pretty handy... if you happen to have a calculator in hand while you
> drive.
> 
> Personally, I just made a little conversion chart adhered to a
> 'business card magnet' that is on the dash so I can check my speed
> when needed.
> 
> Geo