To FX4 axle or not - Ranger-Forums - The Ultimate Ford Ranger Resource


Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

View Poll Results: FX4 Axle
Yes 9 90.00%
No 1 10.00%
Other...post it 0 0%
Voters: 10. You may not vote on this poll

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 04-26-2006
0RangerEdge2's Avatar
Member
Thread Starter
iTrader: (2)
 
Join Date: Jun 2005
Location: Ohio
Posts: 2,593
To FX4 axle or not

I was at a junkyard for some interior parts recently and came across what looked like a 2001+ Ranger FX4. The interior and entire frontend was burnt but the rear was completely new. The exhuast wasn't even rusted yet. But I looked at the axle tag and it's a 4.10 Limited Slip 8.8. Right now on my 2wd edge I've got a 4.10 Non Limited slip 8.8. The junkyard wants 200 for the entire axle. Should I get it? And how hard would the swap be?
Reply With Quote
  #2  
Old 04-26-2006
RF Veteran
 
Join Date: May 2005
Location: College Station, TX
Posts: 5,782
The swap would be bolt-in. Very simple for you. 200 for a complete rear axle is pretty good IMO. That's what I sold my 8.8 w/ 4.10s for. Make sure you get the parking brake cables and brake lines and such. If you are lucky, it will even be a 2002 FX4 and you'll luck out with the 31 spline axle and torsen limited slip. If the truck is an automatic, even better because the 2002 FX4 package with manual transmissions had a few problems with their torsen units and there was a recall on them. Good luck!
Reply With Quote
  #3  
Old 04-26-2006
sawred's Avatar
Member
 
Join Date: Jan 2005
Location: San Antonio, TX
Posts: 580
For $200...yeah that'd be a pretty good upgrade (if it is in fact an Fx4).
You can't buy an LSD for less than that and it's installed (well once you get the axle bolted up. Plus the additional strength of the 31 spline vs 28 spline.
Reply With Quote
  #4  
Old 04-26-2006
rngprerunner's Avatar
Member
 
Join Date: Jun 2004
Location: Long Beach CA
Posts: 3,453
I guess what we all need to know is, is it a 31spline Torsen, or a 28spline standard?
Reply With Quote
  #5  
Old 04-26-2006
V8 Level II's Avatar
RF Veteran
iTrader: (4)
 
Join Date: Nov 2004
Location: Michigan
Posts: 7,835
Quote:
Originally Posted by Gearhead61
If the truck is an automatic, even better because the 2002 FX4 package with manual transmissions had a few problems with their torsen units and there was a recall on them. Good luck!
The opposite is true. All of the early 2002MY FX4 Torsen-equipped axles were the same but Ford only replaced the ones in the manuals because only the manual trucks had experienced premature failure of the Torsens. That leaves the early 2002 FX4 automatics with a big question mark, IMO.

If the axle has a purple tag, it is one of the replaced units and should be OK. If the truck was built after about Jan/Feb 2002, it should have the improved diff whether it is manual or automatic.
Reply With Quote
  #6  
Old 04-26-2006
n3elz's Avatar
RF Veteran
 
Join Date: Jun 2004
Location: Kennett Square, PA
Posts: 10,620
^^^ ABSOLUTELY!

If it's a 31 spline, you're going to need new u-bolts, and axle plate. If you get it for $200 complete with brakes and all, it's a good deal. The 31 spline axle tube is a 1/2 inch bigger diameter (3.25 inches vs. 2.75 inches) .

Now, if it's an unrecalled torsen LS, and you have a manual, it might not be a real good idea if you intend to thrash it.

An axle swap is easier than a diff swap, and the torsen isn't a clutch type (if that's what's in there) and doesn't wear out like a TracktionLock diff does.

If it's the 31 spline, you'll need the additional parts we mentioned before and DEFINITELY get the brakes since the backing plate and all are different from the 28 spline axle.
Reply With Quote
  #7  
Old 04-26-2006
Member
 
Join Date: Nov 2004
Location:
Posts: 3,115
you have an open diff now so even if it only a 28 spline unit its still a good upgrade.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Rear axle housing, pressed in axle tubes jpsaxnc General Ford Ranger Discussion 4 06-05-2014 10:04 PM
Spicer 28-IFS axle vs Spicer 35-IFS axle [email protected] Drivetrain Tech 3 11-15-2010 05:25 PM
7.5 axle swap to 8.8 axle Possible? thef9est1 Drivetrain Tech 3 11-01-2010 10:17 PM
New Axle Or Used Axle?? 1996Ranger4x4SuperCabSTX General Ford Ranger Discussion 5 12-09-2008 11:41 AM
Will an FX4 II axle work on my truck??? (new question) TheForce02 Drivetrain Tech 45 09-07-2004 02:31 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 04:43 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.