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From: Ray O on 23 Apr 2008 21:47

<tomg(a)fullnet.com> wrote in message
news:201f8312-8b0d-408b-ac39-6621680018ff(a)x41g2000hsb.googlegroups.com...
On Apr 23, 12:20 am, "Ray O" <rokigawaATtristarassociatesDOTcom>
wrote:
> <t...(a)fullnet.com> wrote in message
>
> news:1dfd284f-3537-4137-b7cb-fc78e9e55cbc(a)d45g2000hsc.googlegroups.com...
>
> >I need to quickly find a source for a larger (i.e. higher current)
> > alternator for a 2007 Toyota Land Cruiser. Engine info: V6 24 valve
> > GX.R 4500 EFI. This vehicle was made/sold in the UAE.
>
> > Thanks.
>
> > - Tom
>
> Why do you need a larger alternator? Have you checked with your local
> Toyota dealer to see if the alternator from a V8 Land Cruiser would fit?
> --
>
> Ray O
> (correct punctuation to reply)

Hi Ray,

Thanks for the response.

We have some specialized electronic equipment that we want to install
in some 2007 V6 Toyota Land Cruisers, which requires a larger
alternator. Ideally, we would like to have 250-Amp-rated units.

This is for an extremely worthy cause, and not for profit. I posted
here just to try to cover all bases, and with the hope that someone
might already have the needed information.

I just need a quick and good answer for this. But of course I have
also been pursuing many other avenues, simultaneously. So anyone
without positive suggestions toward the stated goal need not post.

- Tom

250 amps is a pretty huge draw. I would check with companies that supply
alternators for emergency response vehicles like ambulances.
--

Ray O
(correct punctuation to reply)


From: Daniel Who Wants to Know on 23 Apr 2008 23:16
"hachiroku" <Trueno(a)ae86.GTS> wrote in message
news:pan.2008.04.23.19.21.22.906000(a)ae86.GTS...
>
>
> Oh, you may also want to check with a Custom Car stereo shop. Some of
> these THUMP machines need some heavy duty current, and with bigger
> alternators, gel-cell batteries and 1 mF capacitors can overcome the
> current problems when a 60Hz thump blows out the back glass...
>
>

Like these ones?
http://www.alternatorparts.com/Extreme%20Duty%20Dual%20Rectifier%20CS-144%20type.htm
No personal experience with them and they are pricey but they look like they
might be well made.


From: Hachiroku on 24 Apr 2008 00:16
On Thu, 24 Apr 2008 03:16:59 +0000, Daniel Who Wants to Know wrote:

> "hachiroku" <Trueno(a)ae86.GTS> wrote in message
> news:pan.2008.04.23.19.21.22.906000(a)ae86.GTS...
>>
>>
>> Oh, you may also want to check with a Custom Car stereo shop. Some of
>> these THUMP machines need some heavy duty current, and with bigger
>> alternators, gel-cell batteries and 1 mF capacitors can overcome the
>> current problems when a 60Hz thump blows out the back glass...
>>
>>
>>
> Like these ones?
> http://www.alternatorparts.com/Extreme%20Duty%20Dual%20Rectifier%20CS-144%20type.htm
> No personal experience with them and they are pricey but they look like
> they might be well made.


Yeah, like that!


From: Retired VIP on 24 Apr 2008 11:11
On Wed, 23 Apr 2008 17:14:32 -0700, Bruce L. Bergman
<blnospambergman(a)earthlink.invalid> wrote:

>On Tue, 22 Apr 2008 05:42:12 -0700 (PDT), tomg(a)fullnet.com wrote:
>
>>I need to quickly find a source for a larger (i.e. higher current)
>>alternator for a 2007 Toyota Land Cruiser. Engine info: V6 24 valve
>>GX.R 4500 EFI. This vehicle was made/sold in the UAE.
>
> If you need 200A hot or better, you are well up in the territory of
>truck alternators. Best bet is to find a local (might be 'regional'
>depending on how large a town you live in) auto electric rebuilding
>shop that deals with truck alternators, take your vehicle there.
>
> They can look at the available space and existing bracketry in the
>car, and will know what they can make fit in the space. And work with
>the existing vehicle wiring, though you most likely will need to adapt
>the vehicle harness to plug into the new voltage regulator.
>
> And you will need a much larger charging output lead going to the
>dual (or triple) battery isolator, and then on to the vehicle battery
>- some truck alternators already have split diode stacks that can go
>straight to two battery banks. The existing #8 AWG lead between
>alternator and battery would be glowing red if you tried running 250A
>through it.
>
> Note that if you don't have the extra load on-line most of the time
>you WILL have problems with boiled batteries. The alternator will be
>putting out way too much charge current for one stock battery, and
>regular car batteries can't accept a charge that fast. Even with a
>dual-battery conversion it might be too much, unless you use the big
>honkin' 8D locomotive starting batteries.
>
> --<< Bruce >>--

Hi Bruce,

You're right on most of this but he won't have (or at least shouldn't
have) battery problems because of the charge rate. The voltage
regulator will keep the voltage down to around 14 volts so the battery
won't over charge. The alternator output will be adjusted to match
the current draw of the equipment up to the max output of the
alternator.

He may have a problem with fusible links in his electrical system
though. I'm not sure if his vehicle uses a fusible link feeding the
power distribution or not.

But I still question why he is looking for answers in a Toyota
newsgroup. It would seem like he would be better served by going to
professionals and not a bunch of guys he doesn't know who are sitting
in front of keyboards.
From: tomg on 24 Apr 2008 15:24
On Apr 24, 11:11 am, Retired VIP <jackj.extradots....(a)windstream.net>
wrote:
> On Wed, 23 Apr 2008 17:14:32 -0700, Bruce L. Bergman
>
<snipped>
>
> But I still question why he is looking for answers in a Toyota
> newsgroup.  It would seem like he would be better served by going to
> professionals and not a bunch of guys he doesn't know who are sitting
> in front of keyboards.- Hide quoted text -
>
> - Show quoted text -

Because I am being as thorough as possible, on this one. ;-)

[Also, I apparently respect the quality of the online community more
than you do.]

Thanks for your technical comments.

- Tom
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