I am under the impression that the speedometer can be calibrated, by an
adjustment, and that a normal part of speedometer rebuilding is to calibrate
it in the speedo shop...........which  would be for stock R & P's and stock
size tires - and  thus is could be re-calibrated to be accurate for your set
up.
Scott
----- Original Message -----
From: "mdrillock" <mdrillock@COX.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Sunday, September 28, 2008 12:14 PM
Subject: Re: speedo/odo off

> You can move the needle on other than the earliest speedos, in my
> experience. It is a little tricky.
>
> The Syncro has a set of speedo gears inside the front diff. These were
> available in various ratios to accommodate different tire sizes AND
> ring/pinion ratios. Changing the ring/pinion ratio directly affects the
> speedo on Syncros but has no effect on 2wd.
>
> Mark
>
> Richard A Jones wrote:
>> The speedo in my '87 Syncro reads 4 mph too high
>> over the whole range.  So could I not just re-position
>> the needle to fix this?  Suggestions on how to do this?
>>
>> The odo reads about 5% high, too.  That is, 10 real
>> miles gets 10.5 on the odo.  Why is that?  Isn't it
>> geared correctly?  Could Palo Alto Speedo have changed
>> this when they overhauled it a while back?
>>
>> Richard
>>
>>
>>