alternator swap - resolution?

[vince@performancecarstereo.com (Vince Royer)]

voltage won't drop much at all if you've got a decent size wire. I moved my
battery to the trunk, and ran a 1/0 cable up to the front.  I still get 14.3
volts at my battery, while it reads 14.4 up front.  So that's a tenth of a
volt loss over a 20 foot span. Then again the cable is the size of a
quarter.

So as long as you have the proper size cable in good condition with clean
connections, you shouldn't be loosing very much voltage. Make sure to always
upgrade your grounds.  Always sand down the metal behind your connection,
and use that electrical grease if you want.

Vince

-----Original Message-----
From: scirocco-l-admin@scirocco.org
[mailto:scirocco-l-admin@scirocco.org]On Behalf Of Allyn
Sent: Thursday, August 22, 2002 11:11 AM
To: John Erickson; scirocco list
Subject: Re: alternator swap - resolution?


so, i did the swap. jumed in the jetta. fired it up. 13.3 volts (same
alternator
that was just putting out 14.1 volts). hrm, this is odd. turn all
accessories on
at once, promptly drops down to 12.3 volts. hrm. then the whole crappy vw
wiring
thing pops into my head. take some voltages at full load: +batt to +alt: .6
volts. -batt to -alt: .8 volts. wouldnt ya know, my wires are crap. i wonder
what voltages are dropped by decent wires. anyone???
Al

----- Original Message -----
From: "John Erickson" <ranahan@charter.net>
To: "Allyn" <amalventano1@comcast.net>; "scirocco list"
<scirocco-l@scirocco.org>
Sent: Thursday, August 22, 2002 1:04 PM
Subject: Re: alternator swap


> That 120 amp Audi alternator I put in my car puts out a
> very steady 14.002 volts.  I don't think 14.1 is a
> problem.
>
> John
> Long beach
>
>
> On Thu, 22 Aug 2002 12:41:30 -0400
>   Allyn <amalventano1@comcast.net> wrote:
> >arg, just tested the 8v roccos alternator. 14.1 volts on
> >startup. this seems a
> >bit high to me. i took a check on the rieger: 13.6 on
> >startup. that seems more
> >realistic. is there some 8v alternator magic i dont know
> >about? or is that 8v
> >number really too high? i suppose swapping over regulator
> >assemblies would fix
> >that excessive voltage problem... hrm...
> >Al
> >
> >----- Original Message -----
> >From: "Allyn" <amalventano1@comcast.net>
> >To: "scirocco list" <scirocco-l@scirocco.org>
> >Sent: Thursday, August 22, 2002 12:33 PM
> >Subject: alternator swap
> >
> >
> >> the alternator (bosch rebuild, from prev owner, unknown
> >>purchase date) on the
> >> wifes jetta is acting up. voltage goes to 12.8 on
> >>startup (actually charges
> >> battery enough to start w/o jumping), but easily gets
> >>loaded down. headlights
> >> and a/c are too much for it to handle, as voltage drops
> >>to the 10.5-11 range.
> >> i've tried swapping brush+regulator assemblies with no
> >>luck. my guess is some
> >of
> >> the output rectifier diodes are toast and it simply cant
> >>put out the rated
> >> current anymore.
> >>
> >> questions:
> >> 1. this thing still has a bosch rebuild sticker on it.
> >>do they offer any kind
> >of
> >> warranty at all?
> >> 2. what potential differences are there between the
> >>alternators on an 87 8v
> >> jetta (with a/c), and an 87 scirocco 8v (w/o a/c). they
> >>look the same on the
> >> outside, but will the scirocco alternator possibly have
> >>a lower current
> >rating,
> >> being non-a/c and all?
> >>
> >> thanks in advance for info,
> >> Al
> >>
> >> Allyn Malventano, ETC(SS), USN
> >> 87 Rieger GTO Scirocco 16v (daily driver, 180k, rocco
> >>#6)
> >> 86 Kamei Twin 16V Turbo Scirocco GTX ('it has begun',
> >>rocco #7)
> >> 86.5 Occo 16v Trailer (dotting 'i's across the country,
> >>rocco #8)
> >> 87 Jetta 8v Wolfsburg 2dr (daily driver, 260k, 0
> >>rattles, original clutch,
> >> driveshafts, wheels :)
> >>
> >>
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