Go Back   Subaru Impreza Forum - WRX STI Rally Performance Tuning > Subaru Impreza Technical Area > Electrical (Including ICE)

Subaru Impreza Forum

Subaru alternator vs. Battery divisor
Reply
 
LinkBack Thread Tools Display Modes
Old 19 Mar 2010, 12:19 PM   #1 (permalink)
Fresh Scooby
 
Join Date: Nov 2009
Posts: 3
Subaru alternator vs. Battery divisor

I'm working on a electrical project for a Impreza gl 1993 1.8, and I'm experiencing some weird beavior, at least, compared to other cars I've done the same setup.

This Impreza is using a two battery system, both separated by a marine battery divisor (as shown in the drawing). These batteries are fed by a custom high amp alternator, built using a stock Impreza alternator.

The issue is, when I start the car, the alternator doesn't feed the batteries. It only starts feeding them if I give it a little "help", using a paralell cirtcuit to conect pin 1 and 2 of the divisor for just a second, giving the alternator the "impression" that the battery is directly attached to it.

The paralell circuit is a single 15W 1.5 OHM resistor. The alternator is a 14.4v 130AMP alternator, and the battery divisor consists of two paralells 50v 80 AMP diodes...

So, I got a lot of questions, but have to start with the most obvious one... Does the impreza's alternator have any kind of reverse current/voltage sensor that requires it to be connected straight to the battery (without a diode on the path)?

Plus, if I give it the little help, both battery are perfectly charged, so the alternator is working fine.



Thanks for the help.
Marcio
Offline   Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Info: Subaru Engines and Conversion Principles djquest Modifications - Tips and Tricks 10 19 Dec 2011 12:16 PM
Subaru Law lol Anders52 Subaru Impreza Discussions 12 22 Jan 2008 12:11 AM
[Toyota]New Relationship between Toyota and Subaru Beginning 2002pete World Wide Automotive - News / Discussions 0 24 Nov 2005 10:34 AM


All times are GMT. The time now is 12:21 PM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.