Ferrari Mailing List: Re: Ferrari rebuilt alternators

[Doug and Terri Anderson (dnt]

Hmmmm - thot I would add a note or two here.  First, many Ferrari cars are 
not driven frequently enough - the battery drops in charge but not voltage - 
we can still get 12.5 volts across the terminals.  Second, alternators do 
one fine job charging and in this process create quite a bit of heat.  As 
such, if we have a low battery, the alternator ends up doing way more and 
more often than they were designed for, charging.  Your reward - pooooof. 
Red light.

I found this out when I removed a melted alternator from another car after I 
had left the lights on during a foggy morning at the airport.  Come back two 
days later and - - - not even a click.  AAA got me going and I drive home. 
Next day - car starts and off I go little knowing I have about half a charge 
in the battery.  Several days of this - just in time for the weekend - and I 
get an extra chore - change alternators. $#**^$?

Guy at the alternator store asks - use this to charge a dead battery?  Um, 
not really - but here's the story.  BUWHAHAhahahahahaah  he says - should 
hooked up a charger.  This poor old guy woulda out lasted your car if you 
hadn't done what you did.

So just about every week or so I charge the battery (so freaking easy to get 
to in a 308) and lo and behold, on a 2 year Interstate, I get about an half 
hour charge before the green light.

Yeah, I do have a trickle charger - see above para regarding how easy the 
battery is to get to.  I really mean to hook it up - but I am pretty lazy 
coming in from a jaunt and aside from creating an external aircraft battery 
charger fitting similar to aircraft - I put it off.  Well, now I do it 
before I take the car out. I think this will forgo an early replacement. 
Stinkin' thing is only 30 years old.  heh heh

DOUG

----- Original Message ----- 
From: "Rick Lindsay" <rolindsay [at] yahoo.com>
To: "DOUG" <dnt [at] dock.net>
Cc: "'The FerrariList'" <ferrari [at] ferrarilist.com>
Sent: Tuesday, June 05, 2007 5:33 AM
Subject: Re: [Ferrari] Ferrari rebuilt alternators


> And Dave, I replaced the alternator once before you
> bought the car!
>
> rick
>
> --- Dave Craig <dave.craig [at] sbcglobal.net> wrote:
>
> > I had my alternator rebuilt (83 Mondial QV) three
> > times before it took.  The
> > first two times it failed within 2K miles.  Then we
> > took a more scientific
> > look at the failures and application and the local
> > shop decided to put in
> > "high speed" aviation bearings on the third rebuild
> > and that was 3 or 4
> > years ago and all is still well.
> >
> > Dave
> >
> > -----Original Message-----
> > From: Dave Handa [mailto:dave [at] davehanda.com]
> > Sent: Monday, June 04, 2007 7:45 PM
> > To: Dave Craig
> > Cc: 'The FerrariList'
> > Subject: Re: [Ferrari] Ferrari rebuilt alternators
> >
> > The Delco is under powered for the application.
> > Have the rebuild shop up it
> > to around 140 amp and you will be fine.  Heard of a
> > couple guys doing this
> > on f-chat and it works.
> >
> >
> >
> > -----Original Message-----
> > From: cdatte [at] spawar.navy.mil
> > [mailto:cdatte [at] spawar.navy.mil]
> > Sent: Monday, June 04, 2007 5:44 PM
> > To: dave [at] davehanda.com
> > Cc: The FerrariList
> > Subject: [Ferrari] Ferrari rebuilt alternators
> >
> > I have an 89 Mondial and it looks like the rebuilt
> > alternator went.
> > Talked to a couple of shops and there seems to be a
> > consensus that
> > rebuilt alternators fail more often than not but I
> > couldn't get any whys.
> > I pulled it and it has a delco that was rebuilt
> > about a year ago.
> > Any Ideas on this would be appreciated
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