Re: [T3] Figuring out the pulley degree notches.

[Toby Erkson <air_cooled_nut@pobox.com>]

<x-flowed>Thanks Brian and Jim.  Jim, I am assuming that the first notch for the 
'68-'71 is 0¼ judging by the spacing...correct?

So for the FI cars there are two pulleys.  And the pre-FI cars have 
another pulley.  Is this early pulley the same for all early cars or do 
they have differing ones as well?

Yes, I wonder about the accuracy of the notches as well, particularly 
the BDC location.  If we knew the BTC mark was exactly BTC (180¼) then 
with the degree wheel Michael pointed us to we could then determine TDC 
and thus the degree of each mark.  Ah, if it were only that easy...

 Toby Erkson  --  http://www.icbm.org/
 '72 VW Squareback Darksider, 5-speed, 2.0L, rag top
 '72 VW Squareback Lightsider, automatic, FI, sunroof, gas heater
 '95 VW Jetta ~ SCCA Solo 2 EP #3; '73 Porsche 914; '81 Honda Gold Wing
 Portland, Oregon



Jim Adney wrote:

> There are 2 different 4 notch pulleys, so you have to look at the pictures.
>
> |    | | |  (68-71)  is TDC, 7.5, 10, 12.5
>
> |   |   | |  (72-3) is -5, TDC, 5, 7.5
>
> Both are shown in the Bentley, but I don't think it gives the numbers.
>
> I'm not familiar with any 3 notch pulleys; it must be from earlier than 68.
> ...
> I've always wondered how accurate the timing marks actually are, since there is 
> actually a bit of play in the keyway and the dowel pin, so this is unlikely to 
> be exact.

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