Cross Post from Vortex and lense repair.

[ydrogs at gmail.com (Gordy Stedman)]

Replacing the 60A with a 90A is an easy swap and one of the first things I
do to all my 60A alt A1s.  I beleive you will have to switch out the plug to
the newer 90A style and you might have to change the pulley out depending on
what car you got the alternator out of to line the belt up.  Also might have
to change out the upper support bracktet depending on how your new alt
mounts up.  I try and get the upper brscket with the teeth on it that uses
the bolt with the geared collar on it.  I have some spares if you want one.
Best alt to get would be out of newer S2 8V.  If you do get a used one check
the brushes/voltage regulator and replace if worn down.
My brother's alt went out this week and I will be looking for replacements
at the yard since I got flown back to PDX for an emergency survey job.  Let
me know if you want a used 90A. There are a lot of A2s and A3s in the yard
now days which also means there is finally lots of ABAs to go around too.

On 9/20/07, Chris Bennett <scirocco16vr32@xxxxxxxxx> wrote:

> Sorry about the cross posting... but...
>
>
> http://forums.vwvortex.com/zerothread?id=3454611&cmd=addnotify
>
> Hey...
> I have an 80 Scirocco and it appears to be wired differently from my 87.
>
> My 87 16v has a 90 amp alternator that is wired B+ to Starter and
> Starter to positive terminal on the Battery.
>
> The 80 has been upgraded to a 65A but I am looking at replacing all
> the large gauge wires under the hood to facillitate better charging.
> Looking at the wiring it appears to go Positive Battery to Starter.
> The Alternator "plug" then goes towards the firewall and according to
> the Bentley it goes to the fuse block?
>
> So I am thinking of getting a Bosch 90 amp alternator and wiring it
> similar to the 16v's and taking that "plug" and smaller gauge wire and
> putting it on the Battery directly.
>
> Yes? No? Maybe? Anyone done this? I don't have a warm fuzzy with that
> small gauge wire going to the firewall and such. It has 27 years worth
> of corrosion and crap. It charges the battery now ok but if I run the
> headlights or anything like that it no longer charges. Also FLAPS
> tells me that the alternator isn't working correctly but it's brand
> new. Going to pull that tommorow. But seriously thinking of replacing
> with a 90 amp.
>
> Yes I read Timbo's tech notes. It doesn't mention the differences in
> charging circuits--STILL A GREAT RESOURCE NOT KICKING ON HIM.


-- 
Gordy
MK1 x 5