AFAIK, the 820 is the earliest USA speedo. I think they changed to 805
during 1982 model production. Why, when same tires were used on both?
Don't know.

Mark

BenT Syncro wrote:
> I've never seen an 820. Replaced the 1000 on my Syncro Doka to a 1600. That way, I can run tires (tyres to AB) even smaller than your go cart.
>
> sent from my electronic leash
>
> On Oct 15, 2011, at 7:49 AM, Alistair Bell<albell@SHAW.CA>  wrote:
>
>> one question I have had for a while is why do vanagon speedometers have a range of revs/mile numbers on them? I have 2 old ones in my parts bins (mph), one has 820 and one has 805.
>>
>> And of course, syncros are different. MY '86 with a purely kph speedo, has 1000 on it. I guess I should look for go kart tires :)
>>
>> alistair
>>
>>
>