Welcome to the North American Subaru Impreza Owners Club Saturday April 19, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Pre-2002 Factory Turbo Powertrain

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 02-27-2012, 08:00 PM   #1
wrxstijdm
Scooby Newbie
 
Member#: 254590
Join Date: Aug 2010
Location: Costa Rica
Vehicle:
1998 V4 Impreza STI
EJ20K engine

Default Is this the way it's supposed to work?

So,

I have a MY98 Version 4 STI (Transmission code #TY752VBCAA).

I put the car in 1st gear and jacked the front of the car (rear wheels on the floor). I noticed that the front wheels spinned freely (on opposite directions between them). I thought this shouldn't happen, but rather get locked? I was under the impression my car had a viscous center diff? (or maybe I don't understand how it works, so if someone can help?)

Then I jacked up the rear (R160 diff, car still in first gear, front wheels on the floor), and they get locked when I try to spin them (no hand brake).

So, basically what I want to understand is if something wrong is going on with my car or not?

Thanks in advance!
* Registered users of the site do not see these ads.
wrxstijdm is offline   Reply With Quote
Old 02-27-2012, 08:16 PM   #2
TommyAtomic
Scooby Newbie
 
Member#: 257043
Join Date: Sep 2010
Chapter/Region: VIC
Location: Vancouver BC
Vehicle:
1993 JDM WRX Wagon
Black

Default

Quote:
Originally Posted by wrxstijdm
I put the car in 1st gear and jacked the front of the car (rear wheels on the floor). I noticed that the front wheels spinned freely (on opposite directions between them). I thought this shouldn't happen, but rather get locked? I was under the impression my car had a viscous center diff? (or maybe I don't understand how it works, so if someone can help?)

Then I jacked up the rear (R160 diff, car still in first gear, front wheels on the floor), and they get locked when I try to spin them (no hand brake).
Its either an open front differential or a torque biased differential and your just not applying enough torque turning the tire by hand. Nothing broken though.
TommyAtomic is offline   Reply With Quote
Old 02-27-2012, 08:40 PM   #3
wrxstijdm
Scooby Newbie
 
Member#: 254590
Join Date: Aug 2010
Location: Costa Rica
Vehicle:
1998 V4 Impreza STI
EJ20K engine

Default

Thanks for the response... I guess my other question is if that setup is the one expected to be on my car (as OEM configuration)?
wrxstijdm is offline   Reply With Quote
Old 02-29-2012, 12:51 AM   #4
wrxstijdm
Scooby Newbie
 
Member#: 254590
Join Date: Aug 2010
Location: Costa Rica
Vehicle:
1998 V4 Impreza STI
EJ20K engine

Default

Any input?
wrxstijdm is offline   Reply With Quote
Old 02-29-2012, 02:43 AM   #5
Marnix
Scooby Specialist
 
Member#: 51480
Join Date: Dec 2003
Chapter/Region: International
Location: The Netherlands
Vehicle:
1984 AM5, 1994 BC4,
2010 BR5

Default

The EJ20K all have open front diffs so yes the wheels spin opposite directions. You don't spin them fast enough to actually engage the center diff.

The rear diff has LSD so they lock.
Marnix is offline   Reply With Quote
Old 02-29-2012, 08:10 AM   #6
wrxstijdm
Scooby Newbie
 
Member#: 254590
Join Date: Aug 2010
Location: Costa Rica
Vehicle:
1998 V4 Impreza STI
EJ20K engine

Default

Good to know everything is working fine in my car... appreciate it!!!
wrxstijdm is offline   Reply With Quote
Reply

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
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Is replacing the fuel filter supposed to be included in the 120k service? hkl03 Newbies & FAQs 6 01-18-2011 03:07 PM
Is the Air Conditioning suppose to work like this? dauss Newbies & FAQs 5 04-15-2006 02:27 PM
MY99 RS the way she's supposed to look ;) 2pt5RS Member's Car Gallery 19 08-16-2005 06:17 PM
Is this the way it really is? MistaOctamopus Newbies & FAQs 14 02-15-2004 10:05 PM
How to tell if car/engine/turbo is running the way it's supposed to? wrexsta Factory 2.0L Turbo Powertrain 4 02-18-2003 07:16 PM


All times are GMT -4. The time now is 10:16 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.