datsun-roadsters
[Top] [All Lists]

Re: alternator conversion help

To: "Adam Bradley" <ambradley@yahoo.com>, SLBESQ@aol.com,
Subject: Re: alternator conversion help
From: "Eric Frisbee" <efris@qwest.net>
Date: Tue, 1 Jan 2002 17:28:56 -0700
Ouch!  definately time for a different harness at that point!    I don't
need a lot since I have a mostly stock '67...  who needs a stereo when you
can listen to that sweet sounding engine though??  :)

Eric
----- Original Message -----
From: Adam Bradley <ambradley@yahoo.com>
To: Eric Frisbee <efris@qwest.net>; <SLBESQ@aol.com>;
<datsun-roadsters@autox.team.net>
Sent: Tuesday, January 01, 2002 3:55 PM
Subject: Re: alternator conversion help


> The single wire alternator also has a voltage regulator, but it's
> internal, not external.  They do the same thing.
>
> You should not hook at 60+ amp alternator to your stock wiring.  If the
> load never exceeds 30 amps, you'll be safe.  But when it does, you'll
> blow your fuse, or worse if for some reason the fuse doesn't blow.
>
> I had an electric radiator fan, directly wired to the battery, and a
> stereo.  I turned on the electric fan, stereo, lights, wipers and
> heater and drew more than 30 amps.  With your wiring, I'd blow the
> fuse.
>
> --- Eric Frisbee <efris@qwest.net> wrote:
> > Great info on the alternators, but... Doesn't the voltage regulator
> > prevent
> > the full 60 amps from hitting your wiring harness?   As I understand
> > the
> > regulator, it sends only what is required by the electrical load.
> > As to
> > the amp guage not working, I have to disagree.   Mine works
> > perfectly,
> > although only up to 30 amps which it would rarely hit, unless I have
> > a dead
> > battery.   I have a pair of 30 amp fuses protecting my relatively
> > fragile
> > amp guage as well.      As to the wiring.   I am using a stock
> > harness on
> > the '67 and just hook up the white wire to my AC Delco, with a line
> > run to
> > #2 post on the alternator.   No problems with that set up and it's
> > got about
> > 6 months of a 160 mile daily drive on it.
> >
> > Good luck!
> > Eric
> >
> > ----- Original Message -----
> > From: Adam Bradley <ambradley@yahoo.com>
> > To: <SLBESQ@aol.com>; <datsun-roadsters@autox.team.net>
> > Sent: Tuesday, January 01, 2002 3:16 PM
> > Subject: Re: alternator conversion help
> >
> >
> > > If you have your alternator in the stock (passenger side) location
> > for
> > > 67.5, the swap isn't too difficult.  You want part number 7127SE
> > (self
> > > exciting), or you can get 7127 without self-exciting and make a
> > wire to
> > > run from the #2 prong on the two prong connector to the + post on
> > the
> > > back of the alternator.  The SE is a little more expensive and
> > you're
> > > not as likely to find it in stock.  The part number is followed by
> > -3,
> > > -6, -9 or -12, which refers to the location of the two prong
> > connector,
> > > like a clock.  -12 is good, so is -3.  -6 points down and -9 points
> > to
> > > the engine so those two are bad choices.
> > >
> > > There are many wires coming out of the stock alternator; most of
> > them
> > > go to the voltage regulator, NOT the battery.  Only the one
> > large(r)
> > > wire goes to the battery via the ammeter.  I believe there is also
> > a
> > > ground wire, which is not needed on the one wire conversion.
> > >
> > > I recall someone saying a 60 amp Z ammeter fits in the 67.5 gauge,
> > but
> > > I believe you'd have to upgrade the whole wiring harness to get it
> > to
> > > support that high amperage, so for right now I'll assume you're not
> > > going to do any of that.
> > >
> > > So, connect the alternator in place of the old one.  If I'm
> > correct, it
> > > will fit right in and even the pulley should line up, although the
> > > pulley may be a bit smaller.  This assumes the late and early
> > roadster
> > > alternators are the same; the one wire alternator fit right in the
> > > stock location of my '70 but the heat destroyed the internal
> > regulator
> > > (late cars have alternator on driver's side and smog pump on
> > passenger
> > > side).
> > >
> > > Anywhoo, wrap up the voltage regulator wires and the hot wire going
> > to
> > > the old alternator.  You will not use any of them.  Run a new 8
> > gauge
> > > wire (wire and crimp-on connectors at your local NAPA auto parts
> > store)
> > > from the + of the new alternator to the + of the battery.
> > >
> > > Your ammeter will no longer read properly.  A voltmeter is easy to
> > > install and gives you essentially the same thing - the health of
> > the
> > > charging system.  They are under $20 for a cheap one and much
> > easier to
> > > install than an ammeter.
> > >
> > > Take a look at my alternator pics at
> > > <http://www.ofoto.com/I.jsp?m=58213969203&n=435884809>.  Mine is on
> > a
> > > late car so the alternator is pushed forward, but you get the idea
> > and
> > > the wiring would be the same.
> > >
> > >
> > > --- SLBESQ@aol.com wrote:
> > > > hi all
> > > > happy new year!  may the new year bring all of us peace and
> > > > prosperity.
> > > >
> > > > because it's a holiday, i have some time to spend on the
> > roadster.  i
> > > > have
> > > > had to jump it lately, so i wanted to see what the alternator was
> > > > putting
> > > > out.  (battery mounted on passenger side of the trunk)  it wasn't
> > > > good (12.8
> > > > at idle, and drops from there to 6 or 7 with the lights on).  i
> > > > wanted to
> > > > upgrade to the "one-wire" delco, so i guess now is the time.
> > > >
> > > > is this something that i can do myself?  i mean, with my
> > obviously
> > > > limited
> > > > knowledge and skill.  what else must i change?  how is it that
> > only
> > > > one wire
> > > > comes out of the delco and five or so come out of mine?  do i
> > need
> > > > new
> > > > mounting hardware?  is there a "kit" for doing this swap?
> > > >
> > > > thanks a million for all your help.
> > > >
> > > > steve
> > > > 67.5 H20
> > > >
> > > > ///  datsun-roadsters@autox.team.net mailing list
> > > > ///  Send admin requests to majordomo@autox.team.net  or go to
> > > > ///  http://www.team.net/cgi-bin/majorcool
> > > > ///  Send list postings to datsun-roadsters@autox.team.net
> > > >
> > >
> > >
> > > =====
> > > Adam
> > > '70 1600 SPL311-28181
> > > http://www.picturetrail.com/abend
> > >
> > > ///  datsun-roadsters@autox.team.net mailing list
> > > ///  Send admin requests to majordomo@autox.team.net  or go to
> > > ///  http://www.team.net/cgi-bin/majorcool
> > > ///  Send list postings to datsun-roadsters@autox.team.net
> > >
> > >
> >
>
>
> =====
> Adam
> '70 1600 SPL311-28181
> http://www.picturetrail.com/abend
>
> ///  datsun-roadsters@autox.team.net mailing list
> ///  Send admin requests to majordomo@autox.team.net  or go to
> ///  http://www.team.net/cgi-bin/majorcool
> ///  Send list postings to datsun-roadsters@autox.team.net

///  datsun-roadsters@autox.team.net mailing list


<Prev in Thread] Current Thread [Next in Thread>