Yes, I have done this for one of my Syncros - 950 vs 1000 for the KMH
speedometers - you have to change the face plate along with it, but not a
big job.  I did this to get a more accurate speedometer and a face that
matches the Jetta II Diesel tach I installed.

Just make sure you use a VDO and not a Motometer speedometer - swapping the
back plastic housing is all that is required.

David Marshall

Fast Forward Automotive Inc.
4356 Quesnel-Hixon Road
Quesnel BC Canada  V2J 6Z3

http://www.fastforward.ca    mailto:sales@fastforward.ca
Phone: (250) 992 7775        FAX: (250) 992 1160

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-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf
Of Budd Premack
Sent: May 21, 2004 12:39 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Syncro Speedometer

Can a Jetta speedometer with the ratio 1540 be substituted for a Syncro
speedometer with the standard 1600 ratio?  If so, will the typical 4% low
speed reading be altered to about 8% low, or will it tend to correct to
close to an accurate reading?

My rusty math and high school physics concepts suggest to me that if the
replacement speedometer had a ratio of 1664, the common 4% low error would
be corrected.

(1600-1540) / 1600 = 3.75% fewer revolutions (?)
(1664-1600) / 1600 = 4.00% more revolutions (?)

BTW, does anyone have a spare Syncro speedometer?

Budd Premack
86 Syncro, 88 Wolfsburg
Land of Sky-Blue Waters
Minneapolis, MN