RE: gm altenators...and efi

[Mike Rolica <mrolica@meridian-mag.com>]

.. rather use this new style.. uses 2 less hp, uses oem brackets..
is the same as 86 and up altenators..
ie your gn.
Mike Rolica
Plant A,
Magnesium Products Division
Strathroy

(519)-245-4040  Ext. 265


	-----Original Message-----
	From:	Bruce Plecan [SMTP:nacelp@bright.net]
	Sent:	Wednesday, June 21, 2000 3:42 PM
	To:	gmecm@diy-efi.org
	Subject:	Re: gm altenators...and efi

	I *think* yours is similiar to the one I had in my 84 F-body, I took
it to a
	good local altern shop and they changed the guts of it, and walked
out with
	a 108 for like $40US, or about $2,400 Can..

	> Well on my way home last night I notice my signl lights were slow
to
	flash..
	> then glancing over at the factory volt gauge, it was at 8..
	> I used the original 3 wire 56amp alternator from the v6 in my
s10..
	> They list 108 amp for the 87 camaro that the tpi was out of....
	> I thought since I did add a lot of extra load ie the 30amps the
elec fand
	> draw, the efi (injectors, ecm, fuel pump) (truck was carbed
before) I
	should
	> use the original altenator.. this way I could use the oem bracket
and
	belts
	> instead of my jigger rig bracket..


	> now for the efi.... As the voltage got lower.. it started running
fatter
	and
	> fatter, till it started missing ( have msd and good coil) I think
this is
	> due to the bat voltage vs injector offset..... also idle whent up
	300rpm....
	> Is there something in the code to kick idle up if voltage drops
below a
	> value???....

	Dunno about that, but at 8v the ecm might have had trouble with the
5v ref,
	or being able to filter things depending on what took a dump in the
	alternator.  Open or shorted diodes can fubar lots of stuff
	Grumpy
	  Welcome back!


	>
	> Anywho...though it was cool..
	> Mike Rolica
	> Plant A,
	> Magnesium Products Division
	> Strathroy
	>
	> (519)-245-4040  Ext. 265
	>
	>
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