Installed 120 amp Audi Alternator

[dswalterwi at earthlink.net (Don Walter)]

Larry,
It think the voltage settings might be slightly different between the two.  When I measured the voltage output of the 90 amp alternator I got 13.8 volts but on the 120 amp alternator I now measure 14.65  I also like the fact that I am not pushing the upper limit of the 90 amp alternator with all the electrical crap I am running i.e. High watt stereo, high wattage euro lights, etc...   The euro lights alone account for almost 600 watts with the high beams on.  If I remember P=IV, Power = current x voltage so:

with the 90 amper my capacity would have been:
90 x 13.8 = 1242 watts

with the 120 amper:
120 x 14.65 = 1758 watts

Do you know what the voltage regulators are set for?  I am just going off what I measured.  I'm not trying to beat a dead horse just curious.

Don

-----Original Message-----
From: Larry <rocco16@sbcglobal.net>
Sent: May 9, 2004 7:04 AM
To: David Utley <mr.utility@highstream.net>
Cc: The Scirocco List <scirocco-l@scirocco.org>
Subject: Re: Installed 120 amp Audi Alternator

What I should have stated originally is that the "maximum" voltage of the
alternators should be the same, whether they are 70A or 120A. (Within normal
spec tolerances, of course)  My oversight.

Larry
sandiego16v


> Yeah, I get it...  That explanation does not quite jive with Als' take on
it
> however...
>
> David
>
> Quoting Larry <rocco16@sbcglobal.net>:
>
> > David,
> >   I would have to say that the voltage went up because the old
alternators
> > were not functioning properly.  I'd be willing to bet that, had you
replaced
> > the old 75amp-ers with NEW 75amp-ers, the voltage would still have gone
> > up....up to where it normally should be.  Follow?
> >
> > Larry
> >
> >
> >
> > > > PS  No matter what the amp output of an alternator..70 or 140...the
> > voltage
> > > > is the same if the alternator is functioning properly.


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Don Walter - Waukesha, WI
1969 Beetle
1969 Karman Ghia
1971 Karman Ghia
1984 1.8 8V Pewter Scirocco (sold years ago)
1986 2L 16V Toronado Red Scirocco (under repair)
1988 1.8 16V Toronado Red Scirocco (sold on 3/29/04)
1986 1.8 16V Black Scirocco (my new ride)