transmission speedo reduction gears and stuff

[hombre@elp.rr.com (John Erickson)]

There appear to be four available, depending on your final drive.  The 4.25 
is the eco diesel part.

020 3.67 final = 171 957 821 B (red)
020 3.89 final =  (blue)
020 3.94 final = 171 957 821 A (white)
020 4.25 final =  (green)

I'm a little unsure of the blue one.  Most of the data came from here:

http://cars.vwsport.com/gears/index.html

John



At 11:57 PM 2/26/2002 -0500, Allyn wrote:
>OK, this has been a burning question for quite some time:
>     The rieger (FN tanny) speedo reads about 10% faster than actual 
> speed. I figure that is due to
>the gear in the tranny, no big deal really, but the rieger has 195/50's up 
>front (yes, i know, they
>dont belong on 9" wide wheels, but i wasnt the one that put em on, damn 
>it). I would think that
>195/50's ought to at least be close to any kind of silly old 13" 70/80 
>series that would have been
>used back in the original FN tranny days, but it isnt close enough as it 
>is still 10% off (i.e.
>tires must still be bigger for it to match).
>     So, on to my question: What is the exact tire size that was used with 
> FN trannies to give a
>CORRECT speedo reading??? Even better, is anyone using an older style 
>tranny with some other
>wheel/tire size that makes the speedo correct, and/or how far is it off by?
>     Also, can someone give me the quick version of what the deal is with 
> the 2 types of speedo
>gears?
>Thanks
>Al
>
>Allyn Malventano, ETC(SS), USN
>87 Rieger GTO Scirocco 16v (daily driver, 170k, rocco #6)
>86 Kamei Twin 16V Turbo Scirocco GTX ('it has begun', rocco #7)
>87 Jetta 8v Wolfsburg 2dr (daily driver, 260k, 0 rattles, original clutch, 
>driveshafts, wheels :)
>
>
>
>
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