Welcome to the North American Subaru Impreza Owners Club Saturday September 23, 2017
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Transmission (AT/MT) & Driveline

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 09-02-2017, 10:17 PM   #1
Carbine308
Scooby Newbie
 
Member#: 59068
Join Date: Apr 2004
Chapter/Region: HIIC
Location: Oahu, HI
Vehicle:
2005 Impreza WRX STi
Black

Default Lots of Play Inside Rear Differential

After changing out the rear axles, upon reassembly and operation of the vehicle we encountered a number of serious issues.

While driving 1-2 mph, there was a very clear repeated, constant, rapid click/pop coming from the rear of the vehicle. We placed the rear of the car on jack stands and placed the transmission in neutral. Under the car, turning the wheels, it becomes obvious that there is a great deal of lateral play as well play in all directions (up & down, back & forth) within the rear differential.

Edited to add: When you turn the wheels, the axles at the differential raise up, rotate, and there is the most ungodly pop and grind noise I've ever heard the car make.

After hours of searching I am not able to find any information that would assist further in understanding exactly what the problem and possible fixes would be.

Any pointers or ideas would be greatly appreciated.

Cheers

-Will
* Registered users of the site do not see these ads.

Last edited by Carbine308; 09-02-2017 at 10:28 PM.
Carbine308 is online now   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 09-03-2017, 09:09 PM   #2
Carbine308
Scooby Newbie
 
Member#: 59068
Join Date: Apr 2004
Chapter/Region: HIIC
Location: Oahu, HI
Vehicle:
2005 Impreza WRX STi
Black

Default

I'm starting to wonder if the ends of the shafts are not the right dimensions. If you push the left axle toward the center, toward the differential, the right axle pushes the other direction.

Either that, or the LSD assembly is not properly engaging the pinion and crown gearset.

Driveshaft Shop 800hp CV Axle Upgrade Rear - Subaru STI 2004-2007
MODEL # DSS RA8528X4/RA8528X4
Manufacturer Part # RA8528X4/RA8528X4

https://www.rallysportdirect.com/par...e-upgrade-rear
Carbine308 is online now   Reply With Quote
Old 09-04-2017, 08:53 AM   #3
Charlie-III
NASIOC Supporter
 
Member#: 30669
Join Date: Dec 2002
Chapter/Region: Tri-State
Location: USA, North NJ, 07456
Vehicle:
1998 Legacy 2.5GT
Silver Sleeper BK, 5MT

Default

If things were fine before the swap, then axles are logical.
Do you still have the old ones? Pull the new and lay them alongside the old and compare.
Charlie-III is offline   Reply With Quote
Old 09-04-2017, 09:41 PM   #4
mrsaturn7085
Scooby Specialist
 
Member#: 375462
Join Date: Dec 2013
Chapter/Region: NWIC
Location: Portland, OR
Vehicle:
2006 Impreza WRX STI
WR Blue

Default

Ensure the C-clips were not lost when you swapped axles - these are 100% necessary for locking the axles into the diff.
mrsaturn7085 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

All times are GMT -4. The time now is 12:58 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2017 Axivo Inc.
Copyright ©1999 - 2017, North American Subaru Impreza Owners Club, Inc.