[Vwdiesel] Transmission Gearing with TD and TD options

[Shawn Wright]

Val,

I think you'd like the TD in the '91, although you may need to swap the trans - it 
looks like you probably have an AWY, which is 3.941 final drive, but a shorter .894 
5th gear. The 1.6 diesels used up to '90 appear to all have the .745 5th gear and the 
same final drive. If you spend a lot of time near 75 mph, even the TD might be 
noisy with the shorter 5th gear.

> This is good information.
> 
> I really like the driveability of the 91, particularily with the 
> steering, which is a breeze to setup perfectly.  (Don't get me 
> going on the high caster fixed settings of my 2003 Jetta!)
> So I'm exploring my options.  If I could convert to a TD 
> easily, I might.  This spring I pull the head, and disassemble
> looking for a crack in the exterior cooling jacket.  The 
> engine has 200K+.  
> 
> The prospect of less noise at 50-75 MPH is very attractive.
> 
> Val
> 
> > The Bentley suggests that for the early years, the NA and TD had the same trans in 
> > the A2s. I kept the ACW trans in my '85 when I installed a TD, and quite like the 
> > ratios - great for the relatively hilly terrain around here, where I can pull many hills 
> > in 5th gear with little effort, provided speed was above 80 km/h or so. If you do a lot 
> > of highway driving, you may want a taller 5th gear from a gas model. Keep in mind 
> > that all things being equal, the TD is far quieter than the NA, especially once revs 
> > climb above 3000 rpm. 3600 rpm is quite smooth in the TD, but could get annoying 
> > in the NA after a while...
> > As far as I know, the only definite factory mods for the TD are the firewall heat 
> > shield, larger rad, and possibly a two stage rad fan, for those cars that came with a 
> > single in the NA. Others can complete the list I'm sure...
> > 
> > On 19 Jan 2004 at 0:19, Val Christian wrote:
> > 
> ...
> 
> 
> 

--
Shawn Wright
http://Zuiko.sls.bc.ca/swright
'88 Westy 375k
'85 Jetta D 263k
'85 Jetta TD 482k (retired)
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