Other than the "W" gears that drive the odometer, what is different about
the "Diesel" speedometer?  The rotation of the input shaft is magnetically
coupled via eddy currents to the spring-biased device to which the needle
is attached.  The faster the shaft turns the more torque produced to
counteract the spring force.  The angular displacement thus created is
resolved by the scale on the face of the speedo and the needle position to
indicate speed.

Or I could be wrong.

Pensionerd.

On Mon, Jul 28, 2014 at 9:58 AM, mark drillock <mdrillock@cox.net> wrote:

> The GW diesel verbiage is BS. The 2wd speedo they are selling will work
> fine with a diesel. How they will treat your return of a diesel speedo
> as a core may be an issue though, assuming they even know how to tell.
> They don't have much use for vans before 86 and make various errors of
> fact when describing parts fitment for older vans.
>
> Mark
>
> Ralph Meyermann wrote:
>
>> I looked into that gw +7% said not for diesel if I remember correctly
>>
>> Velma 82 1.9L AAZ TD Westy
>> On Jul 28, 2014 10:44 AM, "Abel Longoria" <houstonphotog@gmail.com>
>> wrote:
>>
>>  just a side note, I have a set of BF Goodrich 215/70-16 tires and I
>>> purchased the GW modified speedometer. Its a +7% and reads exactly what
>>> my
>>> gps output displays so its spot on.
>>>
>>> Abel
>>>
>>>