Ford-Rangers.com Ranger Forum HomeFord-Rangers.com Ranger Forum Home
Home Recent Topics New posts Search search Menu menu Not logged in - Login | Register
Ford-Rangers.com Ranger Forum > Tech Section > Drivetrain Tech > Ranger and Explorer/mountaineer rear end /differential info

Ford-rangers.com is a discussion forum, a Ranger forum for people who have questions about fixing or modifying
their Ford Rangers or people who just admire their Ranger. Please join and enjoy sharing experiences!

Ranger and Explorer/mountaineer rear end /differential info       #: 163
 Moderated by: NoPower, Mike69, MaDMaXX Page:    1  2  3  Next Page Last Page  
New Topic Reply
 Rate Topic 
 Posted: Sun Nov 12th, 2017 01:28 am
PM Quote Reply
1st Post
JAMMAN

Owns A Torsen


Joined: Mon Sep 18th, 2017
Location: Grove City OhioUSA
Posts: 5322
Name: Jim
Occupation: Design and Innovation
Interests: RBV's, Computers
Status: 
Online
Reputation: 
Reputation Points: 8511
To keep from "copying" I have spent hours doing my own research on the differential types used in Rangers and the most popular one to swap in to a ranger... the Explorer/Mountaineer.


One common misconception I have seen is that you can only get a heavy duty rear end out of an explorer or mountaineer with a V8. Not true at all. Beyond a shadow of a doubt, the rear end that sits in the back of a 4.0 Explorer/Mountaineer is the same 8.8 gear 31 spline setup as is in the V8 versions. Why they decided to put so many different rear ends in the ranger is beyond me.


I plan on spending a LOT of time gathering real info, Don knows of a guy here locally in the Columbus area (the babbit bearing dude Don) that I might hit up for some insider info especially on the fabled 4.56 31 spline rear end that might or might not have appeared on some rangers "99 and up" I can't seem to find anything I can sink my teeth in to and believe 100%. And anything I find on it doesn't say if the axle housings were the same diameter as the 8.8 Explorer/Mountaineer rear ends which is essential for a swap kit purchase.


I plan on turning this in to a separate page tech article eventually with tables and circles and arrows like the big guys have so if anyone has explicit info or has seen with their own eyes the unicorn rear end please please step forward.


First a door tag with the axle code circled. It looks a little different in different years but is basically in the exact same place:





This is the door tag but since axles seem to have a limited life span in Rangers it would be a good idea to look at the actual tag on the axle (which I will post eventually off the same vehicle for reference) or better yet count the turns yourself. The limited slip versions are the easiest to count, on a 3.73 rear end limited slip you would be able to turn the driveshaft about 3 and 3/4 turns before the tires turn 360 degrees. On an open axle (non limited slip) I would block one tire so the other turns only... the driveshaft would turn about 3 and 3/4 times to take the one spinning tire around twice. 3.73 to 1 is the ratio. The spider gears in the differential is what would make the open tire spin double.

So here is the list that I have gathered so far. First for the Ranger:

8.8" are 28 spline

82 = 3.08 open 7.5"
84 = 3.45 open 7.5"
85 = 3.55 open 7.5"
86 = 3.73 open 7.5"
87 = 4.10 open 7.5"
89 = (1992-1998) 4.10 open 7.5"
89 = (1999-2000) 4.56 open 7.5" (I didn't find anything on this one but it appears in all the charts)
91 = 3.27 open 8.8"
92 = 3.08 open 8.8"
95 = 3.55 open 8.8"
96 = 3.73 open 8.8"
97 = 4.10 open 8.8"
F5 = 3.55 LS 7.5"
F6 = 3.73 LS 7.5"
F7 = 4.10 LS 7.5"
R5 = 3.55 LS 8.8"
R6 = 3.73 LS 8.8"
R7 = 4.10 LS 8.8"

I didn't put anything else here just because it was on an existing chart, but will add to the chart based on member experiences or links to non forum tech articles from members. This is a rough draft.

Most articles and forums agree that if the ranger had a 4 cyl or a non 4.0 V6 it had a 7.5" rear gear. The 4.0 has the 8.8" gear but it is a 28 spline axle, not a 31 like the Explorer/Mountaineer. If anyone has found different please tell me, but remember the rear end might have been switched out in your ranger so be sure please.

Here is what I came up with for the Explorer/Mountaineer:


All 8.8" 31 spline

41 = 3.27 open
42 = 4.10 open
43 = 3.08 open
45 = 3.55 open
46 = 3.73 open
D1 = 3.27 LS
D2 = 4.10 LS
D4 = 3.73 LS
L73 = 3.73 LS
17 = 3.31 open
19 = 3.55 open
H6 = 3.73 LS
H7 = 3.31 LS

Like I mentioned if anyone has personal experience that they can confirm conflicts with the chart or has something they can add to the chart from experience please state it! I plan on stewing for 6 months then it will appear on its own page in our tech article section that will get created. I'll add differential tag info in the next month or so next time I'm under the vehicle the door tag is from.

IS THE 31 SPLINE 4.56 RANGER REAR END REAL AND IF SO WHAT DIAMETER IS THE AXLE TUBES?




____________________
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD XCSB 4.0 G2
00 XLT 4WD RCSB 3.GO! Jalapeño
00 XLT 4WD RCSB Steppie 3.blown. Mistake
99 XL 4WD RCSB 3.0, has no name yet
00 XLT 2WD RC Steppie 2.5 Dee Dee

ALL Amazon Green Metallic
Back To Top PM Quote Reply

 Posted: Sun Nov 12th, 2017 02:20 am
PM Quote Reply
2nd Post
Undrstm8ed
Seasoned...


Joined: Sat Oct 21st, 2017
Posts: 1253
Name: 
Occupation: 
Interests: Life, Experiences, and adventures.
Status: 
Offline
Reputation: 
Reputation Points: 1878
I seem to recall another member (Tyler) from an "OTHER" forum whom had a 07' 4banger (2.3) with a stock 4.10; 7.5" rear end tho, Ran them from 2001-2011. Just confirmed it



____________________
"Be never first, never last and never noticed." - Unknown

"The slave is held most securely when he is held by the chains of his own will and of his own fears, and when he is locked down by his own slavish desires for a comfortable life." - Michael Bunker

"Mundus vult decipi, ergo decipiatur. Mundus vult decipi, ergo decipiatur" - ~ attributed to Petronius (Gaius Petronius Arbiter (ca. 27–66 AD))
Roman courtier during the reign of Nero.

"Those who expect to reap the blessings of freedom, must, like men, undergo the fatigue of supporting it." - Thomas Paine


~ Undrstm8ed Truckumentry Write Up Pg.

~ Undrstm8ed Trailermentry Write Up Pg.
.
Back To Top PM Quote Reply

 Posted: Sun Nov 12th, 2017 06:28 am
PM Quote Reply
3rd Post
MaDMaXX

Hails from the land of rust!


Joined: Sat Oct 21st, 2017
Location: Oregon USA
Posts: 1368
Name: 
Occupation: 
Interests: Motorsport/Firearms/IT
Status: 
Offline
Reputation: 
Reputation Points: 2163
I would love to have a LS in mine, but it seems to be a lot of work and that's after you manage to somehow find one.

I believe mine is currently a 97 - 4.11 open.



____________________
2002 - 3.0 - 4x2 - Edge

Upgrades/Maintenance log
Back To Top PM Quote Reply

 Posted: Sun Nov 12th, 2017 10:17 am
PM Quote Reply
4th Post
JAMMAN

Owns A Torsen


Joined: Mon Sep 18th, 2017
Location: Grove City OhioUSA
Posts: 5322
Name: Jim
Occupation: Design and Innovation
Interests: RBV's, Computers
Status: 
Online
Reputation: 
Reputation Points: 8511
Undrstm8ed wrote: I seem to recall another member (Tyler) from an "OTHER" forum whom had a 07' 4banger (2.3) with a stock 4.10; 7.5" rear end tho, Ran them from 2001-2011. Just confirmed it

Probably a code 87, my V8 project has a code 87 (4 cyl 2.5) and it's a 2000. The D2 from my explorer will end up in there, well documented also so expect a tech sheet on that :)



____________________
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD XCSB 4.0 G2
00 XLT 4WD RCSB 3.GO! Jalapeño
00 XLT 4WD RCSB Steppie 3.blown. Mistake
99 XL 4WD RCSB 3.0, has no name yet
00 XLT 2WD RC Steppie 2.5 Dee Dee

ALL Amazon Green Metallic
Back To Top PM Quote Reply

 Posted: Sun Nov 12th, 2017 07:31 pm
PM Quote Reply
5th Post
Tsquare
Member


Joined: Fri Nov 10th, 2017
Location: Suwanee GeorgiaUSA
Posts: 1223
Name: 
Occupation: Controlled Insanity
Interests: 
Status: 
Offline
Reputation: 
Reputation Points: 2208
I knew I had a LS but I wasn't sure about the ratio.  I have the F6 3.73 LS 7.5"

Thanks for the datasheet. For those that don't have LS a Detroit Locker differential is just under $500 at Summit. Changing out the chunk is a lot easier than swapping a used rear axle. The DL is also a much better LS than Ford's clutch design.

Also for factory LS, don't forget to add the Limited Slip Friction Modifier at the 50K service interval. If your LS gets to the point it where the LS is not working it is usually fixed by adding more of the friction modifier.

Last edited on Sun Nov 12th, 2017 07:31 pm by Tsquare



____________________
Tony
NE ATL
'04 XLT regular cab 3.slo stepside
Came out of retirement to drive a school bus - I have lost my mind
Back To Top PM Quote Reply

 Posted: Sun Nov 12th, 2017 08:09 pm
PM Quote Reply
6th Post
JAMMAN

Owns A Torsen


Joined: Mon Sep 18th, 2017
Location: Grove City OhioUSA
Posts: 5322
Name: Jim
Occupation: Design and Innovation
Interests: RBV's, Computers
Status: 
Online
Reputation: 
Reputation Points: 8511
I like the truetrac better than the locker. Have you seen the reviews on the tru trak?

The stock LS is fine for every day driving and getting out of puddles and mild ice but you are right about an aftermarket unit, would be much easier than swapping an entire housing. Might even be easier to add the disk brake mod than swapping out the entire thing.

And you are welcome :)



____________________
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD XCSB 4.0 G2
00 XLT 4WD RCSB 3.GO! Jalapeño
00 XLT 4WD RCSB Steppie 3.blown. Mistake
99 XL 4WD RCSB 3.0, has no name yet
00 XLT 2WD RC Steppie 2.5 Dee Dee

ALL Amazon Green Metallic
Back To Top PM Quote Reply

 Posted: Sun Nov 12th, 2017 09:12 pm
PM Quote Reply
7th Post
MaDMaXX

Hails from the land of rust!


Joined: Sat Oct 21st, 2017
Location: Oregon USA
Posts: 1368
Name: 
Occupation: 
Interests: Motorsport/Firearms/IT
Status: 
Offline
Reputation: 
Reputation Points: 2163
I can only find one on Summit that would fit mine, am i right about that?

https://www.summitracing.com/parts/dtl-912a562/overview/



____________________
2002 - 3.0 - 4x2 - Edge

Upgrades/Maintenance log
Back To Top PM Quote Reply

 Posted: Sun Nov 12th, 2017 09:17 pm
PM Quote Reply
8th Post
JAMMAN

Owns A Torsen


Joined: Mon Sep 18th, 2017
Location: Grove City OhioUSA
Posts: 5322
Name: Jim
Occupation: Design and Innovation
Interests: RBV's, Computers
Status: 
Online
Reputation: 
Reputation Points: 8511
Whats your door code?



____________________
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD XCSB 4.0 G2
00 XLT 4WD RCSB 3.GO! Jalapeño
00 XLT 4WD RCSB Steppie 3.blown. Mistake
99 XL 4WD RCSB 3.0, has no name yet
00 XLT 2WD RC Steppie 2.5 Dee Dee

ALL Amazon Green Metallic
Back To Top PM Quote Reply

 Posted: Sun Nov 12th, 2017 09:19 pm
PM Quote Reply
9th Post
MaDMaXX

Hails from the land of rust!


Joined: Sat Oct 21st, 2017
Location: Oregon USA
Posts: 1368
Name: 
Occupation: 
Interests: Motorsport/Firearms/IT
Status: 
Offline
Reputation: 
Reputation Points: 2163
97 - And i mean, that's the only option, right?

Last edited on Sun Nov 12th, 2017 09:20 pm by MaDMaXX



____________________
2002 - 3.0 - 4x2 - Edge

Upgrades/Maintenance log
Back To Top PM Quote Reply

 Posted: Sun Nov 12th, 2017 09:34 pm
PM Quote Reply
10th Post
Kealel
Certified Ranger Nutjob


Joined: Sat Oct 21st, 2017
Posts: 170
Name: Keegan
Occupation: 
Interests: Rangers. Duh.
Status: 
Offline
Reputation: 
Reputation Points: 345
2002 FX4 Rangers, 2003+ FX4 level 2 Rangers, and I believe some 2007+ FX4 Rangers had a 31 spline rear end with a T-2 Torsen limited slip differential. The axle code was R7 (4.10 LS) just like the trucks with a 28 spline clutch pack driven limited slip. 



____________________
Past:
Baby Girl: 2006 XL 3.0 ~RIP~ 1/26/2015

Current:
Penguin: 2002 XLT 3.SLOW 4x2

River/Kaitlyn: 2003 EDGE 3.GO! 4x2... For now?
~Aspiring Mini Level 2~

Back To Top PM Quote Reply

 Posted: Mon Nov 13th, 2017 12:24 am
PM Quote Reply
11th Post
JAMMAN

Owns A Torsen


Joined: Mon Sep 18th, 2017
Location: Grove City OhioUSA
Posts: 5322
Name: Jim
Occupation: Design and Innovation
Interests: RBV's, Computers
Status: 
Online
Reputation: 
Reputation Points: 8511
Good to know, how did you tell them apart? Actual axle tag or?



____________________
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD XCSB 4.0 G2
00 XLT 4WD RCSB 3.GO! Jalapeño
00 XLT 4WD RCSB Steppie 3.blown. Mistake
99 XL 4WD RCSB 3.0, has no name yet
00 XLT 2WD RC Steppie 2.5 Dee Dee

ALL Amazon Green Metallic
Back To Top PM Quote Reply

 Posted: Mon Nov 13th, 2017 01:18 am
PM Quote Reply
12th Post
JAMMAN

Owns A Torsen


Joined: Mon Sep 18th, 2017
Location: Grove City OhioUSA
Posts: 5322
Name: Jim
Occupation: Design and Innovation
Interests: RBV's, Computers
Status: 
Online
Reputation: 
Reputation Points: 8511
MaDMaXX wrote: 97 - And i mean, that's the only option, right?

And yes, the 97 should take that exact truetrac.. 28 spline 8.8. I would still check it out first in case someone before you switched the rear end, there's a tag attached to a cover bolt that should tell the story.

It isn't a cake walk putting a ring back in,there is shimming involved for proper fit with the pinion gear. I have done it and gotten lucky (never with a ford and a truetrac but it is relative, similar design) but I wouldn't hesitate to do it since I have dial indicators and you tube. I do machining for a living I could grind shims if I needed.



____________________
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD XCSB 4.0 G2
00 XLT 4WD RCSB 3.GO! Jalapeño
00 XLT 4WD RCSB Steppie 3.blown. Mistake
99 XL 4WD RCSB 3.0, has no name yet
00 XLT 2WD RC Steppie 2.5 Dee Dee

ALL Amazon Green Metallic
Back To Top PM Quote Reply

 Posted: Mon Nov 13th, 2017 02:15 am
PM Quote Reply
13th Post
JAMMAN

Owns A Torsen


Joined: Mon Sep 18th, 2017
Location: Grove City OhioUSA
Posts: 5322
Name: Jim
Occupation: Design and Innovation
Interests: RBV's, Computers
Status: 
Online
Reputation: 
Reputation Points: 8511
Looks like there are some uncanny similarities between the Torsen T2 and the Detroit/Eaton Truetrac.
















____________________
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD XCSB 4.0 G2
00 XLT 4WD RCSB 3.GO! Jalapeño
00 XLT 4WD RCSB Steppie 3.blown. Mistake
99 XL 4WD RCSB 3.0, has no name yet
00 XLT 2WD RC Steppie 2.5 Dee Dee

ALL Amazon Green Metallic
Back To Top PM Quote Reply

 Posted: Mon Nov 13th, 2017 03:09 am
PM Quote Reply
14th Post
MaDMaXX

Hails from the land of rust!


Joined: Sat Oct 21st, 2017
Location: Oregon USA
Posts: 1368
Name: 
Occupation: 
Interests: Motorsport/Firearms/IT
Status: 
Offline
Reputation: 
Reputation Points: 2163
Hmm, $500 is a lot of money, but it would be very cool to add this to mine.



____________________
2002 - 3.0 - 4x2 - Edge

Upgrades/Maintenance log
Back To Top PM Quote Reply

 Posted: Mon Nov 13th, 2017 08:55 am
PM Quote Reply
15th Post
JAMMAN

Owns A Torsen


Joined: Mon Sep 18th, 2017
Location: Grove City OhioUSA
Posts: 5322
Name: Jim
Occupation: Design and Innovation
Interests: RBV's, Computers
Status: 
Online
Reputation: 
Reputation Points: 8511
Unless you are drag racing this is the rear end to have. Else you can get a spool insert for about 30 bucks or a ring mount spool for like 120 and put up with chirping around corners.


Or weld the spider gears like we used to do in the mid 70's. Yes I did it. 75 pontiac astre with a 77 buick 231 V6, an abandoned project from someone else I finished up as a teenager.



____________________
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD XCSB 4.0 G2
00 XLT 4WD RCSB 3.GO! Jalapeño
00 XLT 4WD RCSB Steppie 3.blown. Mistake
99 XL 4WD RCSB 3.0, has no name yet
00 XLT 2WD RC Steppie 2.5 Dee Dee

ALL Amazon Green Metallic
Back To Top PM Quote Reply

 Posted: Mon Nov 13th, 2017 07:36 pm
PM Quote Reply
16th Post
Kealel
Certified Ranger Nutjob


Joined: Sat Oct 21st, 2017
Posts: 170
Name: Keegan
Occupation: 
Interests: Rangers. Duh.
Status: 
Offline
Reputation: 
Reputation Points: 345
JAMMAN wrote: Good to know, how did you tell them apart? Actual axle tag or?Long story short, to tell them apart, the rare 31 spline Ranger axle is the same diameter as an Explorer axle and a larger diameter than a Ranger axle.
None of the 3 axles I have seen has had any sort of tag on them to say what it was. I look for trucks that had the axle stock and then measure the axle with a wire that has sharpie marks on it. If the marks line up, the axle is a 31 spline (Explorer axle or the rare Ranger one) and if not, it is a 28 spline Ranger axle. I can't remember the diameter of the 31 spline axles so I will have to make another post when I open my documents, but to tell if it is a Ranger axle or an explorer one, the Ranger axles are I believe an inch and a half shorter from end to end (wheel stud to wheel stud) 
The Torsen is very similar to The Turetrac but has better reviews. 
To know if the Torsen is still in there, you have to remove the diff cover, it looks like this:

Attachment: Snapchat-960669242.jpg (Downloaded 121 times)



____________________
Past:
Baby Girl: 2006 XL 3.0 ~RIP~ 1/26/2015

Current:
Penguin: 2002 XLT 3.SLOW 4x2

River/Kaitlyn: 2003 EDGE 3.GO! 4x2... For now?
~Aspiring Mini Level 2~

Back To Top PM Quote Reply

 Posted: Tue Nov 14th, 2017 10:25 pm
PM Quote Reply
17th Post
Kealel
Certified Ranger Nutjob


Joined: Sat Oct 21st, 2017
Posts: 170
Name: Keegan
Occupation: 
Interests: Rangers. Duh.
Status: 
Offline
Reputation: 
Reputation Points: 345
Axle diameter of the 31 spline axles is 3.25"



____________________
Past:
Baby Girl: 2006 XL 3.0 ~RIP~ 1/26/2015

Current:
Penguin: 2002 XLT 3.SLOW 4x2

River/Kaitlyn: 2003 EDGE 3.GO! 4x2... For now?
~Aspiring Mini Level 2~

Back To Top PM Quote Reply

 Posted: Tue Nov 14th, 2017 11:02 pm
PM Quote Reply
18th Post
JAMMAN

Owns A Torsen


Joined: Mon Sep 18th, 2017
Location: Grove City OhioUSA
Posts: 5322
Name: Jim
Occupation: Design and Innovation
Interests: RBV's, Computers
Status: 
Online
Reputation: 
Reputation Points: 8511
Measured where? I hear they taper slightly and are smaller at the spring perch than at the pig. I also heard they are a press fit into the pig is this true?



____________________
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD XCSB 4.0 G2
00 XLT 4WD RCSB 3.GO! Jalapeño
00 XLT 4WD RCSB Steppie 3.blown. Mistake
99 XL 4WD RCSB 3.0, has no name yet
00 XLT 2WD RC Steppie 2.5 Dee Dee

ALL Amazon Green Metallic
Back To Top PM Quote Reply

 Posted: Wed Nov 15th, 2017 12:49 am
PM Quote Reply
19th Post
Kealel
Certified Ranger Nutjob


Joined: Sat Oct 21st, 2017
Posts: 170
Name: Keegan
Occupation: 
Interests: Rangers. Duh.
Status: 
Offline
Reputation: 
Reputation Points: 345
JAMMAN wrote: Measured where? I hear they taper slightly and are smaller at the spring perch than at the pig. I also heard they are a press fit into the pig is this true?Now you're really making me think back to a few months ago haha.


As all other Ranger axles taper at the ends, these do as well. Thinking back now that measurement came from a spreadsheet I put together for disc brake swapping the axles, so it likely is at the smallest point of the taper. I'll go out to measure one of my axles tomorrow and see what they measure at.


By Pig I assume you mean the pumpkin, the giant ball between the shafts, or one of the many other names it has. If I recall, the outer tubes are tightly fit in there (likely press fit, yes) with large rivets holding them in. In heavily offloaded rigs, these rivets are known to shake loose so some also weld the tubes into place (something I considered doing until I ran out of time).


I'll just get a lot of axle shots tomorrow and post them up.



____________________
Past:
Baby Girl: 2006 XL 3.0 ~RIP~ 1/26/2015

Current:
Penguin: 2002 XLT 3.SLOW 4x2

River/Kaitlyn: 2003 EDGE 3.GO! 4x2... For now?
~Aspiring Mini Level 2~

Back To Top PM Quote Reply

 Posted: Wed Nov 15th, 2017 04:11 am
PM Quote Reply
20th Post
97rangerstepside
Member


Joined: Mon Oct 23rd, 2017
Location: Washington USA
Posts: 142
Name: Jeff
Occupation: 
Interests: Guns, outdoors, camping, riding motorcycles.
Status: 
Offline
Reputation: 
Reputation Points: 312
Confirmed what I thought I had, 3.73 7.5” one tire fire.



____________________
1997 Ford Ranger XLT 2.3 5speed
Mods, Explorer limited leather buckets, shorty console, sport trac white face gauges, proper hitch, proper spray in bedliner, UWS toolbox. 20% tinted windows
2004 Jeep Wrangler 2.4 5speed (toy)
3” coil spacer lift, 31x10.5x15 all terrains.
2002 Ford Ranger Xlt 4dr extended cab 4.0 auto 2wd
Back To Top PM Quote Reply

 Posted: Wed Nov 15th, 2017 06:06 am
PM Quote Reply
21st Post
Undrstm8ed
Seasoned...


Joined: Sat Oct 21st, 2017
Posts: 1253
Name: 
Occupation: 
Interests: Life, Experiences, and adventures.
Status: 
Offline
Reputation: 
Reputation Points: 1878
What I've been trying to address is the upgrades for these axles and rear ends. Shy of the Tru-trac or Detroit Locker's added, C-clip removal..


- What about the actual upgrading of the actual half shafts themselves?
- Drive axle upgrades?
- Dana 44 Hubs and spindles and stubby axles in the front Dana 35's?


And... there has got to be something BETTER than a 31 spline 8.8 rear end from an Explorer put into these trucks EVEN if that means the aforementioned options and thoughts are addressed as well. I've yet to break what I have but others around me seem to be snapping things left & right it seems and I tend to feel like at times I am being a bit harsh on the truck trying to keep up with the 4x4 crews I trail with.

Last edited on Wed Nov 15th, 2017 06:06 am by Undrstm8ed



____________________
"Be never first, never last and never noticed." - Unknown

"The slave is held most securely when he is held by the chains of his own will and of his own fears, and when he is locked down by his own slavish desires for a comfortable life." - Michael Bunker

"Mundus vult decipi, ergo decipiatur. Mundus vult decipi, ergo decipiatur" - ~ attributed to Petronius (Gaius Petronius Arbiter (ca. 27–66 AD))
Roman courtier during the reign of Nero.

"Those who expect to reap the blessings of freedom, must, like men, undergo the fatigue of supporting it." - Thomas Paine


~ Undrstm8ed Truckumentry Write Up Pg.

~ Undrstm8ed Trailermentry Write Up Pg.
.
Back To Top PM Quote Reply

 Posted: Wed Nov 15th, 2017 09:42 am
PM Quote Reply
22nd Post
JAMMAN

Owns A Torsen


Joined: Mon Sep 18th, 2017
Location: Grove City OhioUSA
Posts: 5322
Name: Jim
Occupation: Design and Innovation
Interests: RBV's, Computers
Status: 
Online
Reputation: 
Reputation Points: 8511
Kealel wrote: JAMMAN wrote: Measured where? I hear they taper slightly and are smaller at the spring perch than at the pig. I also heard they are a press fit into the pig is this true?Now you're really making me think back to a few months ago haha.


As all other Ranger axles taper at the ends, these do as well. Thinking back now that measurement came from a spreadsheet I put together for disc brake swapping the axles, so it likely is at the smallest point of the taper. I'll go out to measure one of my axles tomorrow and see what they measure at.


By Pig I assume you mean the pumpkin, the giant ball between the shafts, or one of the many other names it has. If I recall, the outer tubes are tightly fit in there (likely press fit, yes) with large rivets holding them in. In heavily offloaded rigs, these rivets are known to shake loose so some also weld the tubes into place (something I considered doing until I ran out of time).


I'll just get a lot of axle shots tomorrow and post them up.




LOL yes pig, pumpkin, differential housing. That was my 1978 backyard mechanic alter ego poking through.

I'll measure mine also next time it is on the rack. Going to measure the explorer also after I pull it.



____________________
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD XCSB 4.0 G2
00 XLT 4WD RCSB 3.GO! Jalapeño
00 XLT 4WD RCSB Steppie 3.blown. Mistake
99 XL 4WD RCSB 3.0, has no name yet
00 XLT 2WD RC Steppie 2.5 Dee Dee

ALL Amazon Green Metallic
Back To Top PM Quote Reply

 Posted: Fri Nov 17th, 2017 05:16 pm
PM Quote Reply
23rd Post
Kealel
Certified Ranger Nutjob


Joined: Sat Oct 21st, 2017
Posts: 170
Name: Keegan
Occupation: 
Interests: Rangers. Duh.
Status: 
Offline
Reputation: 
Reputation Points: 345
Alright. the pictures and such are here... The rain delayed me.


If you walk up to a truck with a R7 code, you'll either see a regular Ranger 8.8 or a rarer 31 spline 8.8 axle. The latter looks like this:






It takes a good eye to spot the differences between these two axles, the tampered edge is not as noticeable, the shafts look beefier, and I believe the pumpkin is a slightly different shape. After seeing both, you get a feel for being able to tell what is what, yet just to make sure, I used my wire trick on this truck to be positive I had what I thought (more on that in a minute).


Just to show, the two axles I am going to be talking about are both the same axle but from different years. One is currently in a 2002 FX4 which it came stock in, and the other is in my 2003 Edge after I took it out of a 2007 FX4 Level 2.


As I mentioned earlier, these axles used the R7 door tag (4.10 L/S) just as trucks with a clutch driven 28 spline 8.8 used, which makes knowing what axle is what a little harder than looking at a sticker while standing up. As proof, here is the door tag to the 2002:






Now lets look at the tapered edges, I will show both trucks as I find the 02 easier to see but more angles makes it easier for everyone. 














The tapered edge measures out at a 3.25" diameter, I believe that is measured on the outside of the axle but I have never measured that part and do not feel like removing a lot of parts to do so.


Next is the rivets that hold the outer shafts into place are really beefy, and I have not heard any issues with them until you start doing some hard core offroading, at which point users usually weld them onto the pumpkin where they meet. You can see where they weld on at on the 2002 but my truck has a sway bar installed that you can not see the joint at. I will post both pictures and hopefully you'll get what I mean.


2002:






My truck:






Finally we are to the measurement test to determine what axle you have found. Wrap a wire around the shaft and mark where two points meet. I did this in green:






I didn't mark the points right on and I wasn't perfectly accurate measuring how far apart the dots were but they came out to roughly 10.75" which means roughly a circumference of 10 3/4" or a diameter that is close to 3.45" on the widest section. If you have no axle to compare to but have string and a measuring device, put the dots at 10.75" apart, you'll know if it isn't a 31 spline as the dots will be about an inch away from each other rather than having about 1/4" of space which you can chalk up to user error.



____________________
Past:
Baby Girl: 2006 XL 3.0 ~RIP~ 1/26/2015

Current:
Penguin: 2002 XLT 3.SLOW 4x2

River/Kaitlyn: 2003 EDGE 3.GO! 4x2... For now?
~Aspiring Mini Level 2~

Back To Top PM Quote Reply

 Posted: Fri Nov 17th, 2017 06:25 pm
PM Quote Reply
24th Post
JAMMAN

Owns A Torsen


Joined: Mon Sep 18th, 2017
Location: Grove City OhioUSA
Posts: 5322
Name: Jim
Occupation: Design and Innovation
Interests: RBV's, Computers
Status: 
Online
Reputation: 
Reputation Points: 8511
Excellent pics!

So at first glance, it looks like the tubes coming out of the differential housing are MUCH larger diameter on the 31 spline rear end in comparison to the axle tube, as a matter of fact it looks identical to an explorer rear end to me.

So for ultimate clarity ...

The rusty rear end and the door tag are off the same 2002 truck that has a 31 spline version of the R7.

The cleaner rear end is your truck, and is a 28 spline rear end off a vehicle who's door tag said R7 also.

Did I get it?



____________________
00 XLT 2WD RCSB 5.0 swap Gherkin
00 XLT 4WD XCSB 4.0 G2
00 XLT 4WD RCSB 3.GO! Jalapeño
00 XLT 4WD RCSB Steppie 3.blown. Mistake
99 XL 4WD RCSB 3.0, has no name yet
00 XLT 2WD RC Steppie 2.5 Dee Dee

ALL Amazon Green Metallic
Back To Top PM Quote Reply

 Posted: Sat Nov 18th, 2017 12:11 am
PM Quote Reply
25th Post
Kealel
Certified Ranger Nutjob


Joined: Sat Oct 21st, 2017
Posts: 170
Name: Keegan
Occupation: 
Interests: Rangers. Duh.
Status: 
Offline
Reputation: 
Reputation Points: 345
JAMMAN wrote: Excellent pics!

So at first glance, it looks like the tubes coming out of the differential housing are MUCH larger diameter on the 31 spline rear end in comparison to the axle tube, as a matter of fact it looks identical to an explorer rear end to me.

So for ultimate clarity ...

The rusty rear end and the door tag are off the same 2002 truck that has a 31 spline version of the R7.

The cleaner rear end is your truck, and is a 28 spline rear end off a vehicle who's door tag said R7 also.

Did I get it?
Haha let me clarify...

The rusty one belongs to the 2002 FX4 that I posted the door tag of.


The clean one is one i swapped into my truck from a 2007 Level 2. That truck is a 2003 Edge that came with an open 4.10 8.8 (a code 97 I believe)


I took photos of both hoping that the rust would outline what I was talking about as my truck was easier to access underneath.



____________________
Past:
Baby Girl: 2006 XL 3.0 ~RIP~ 1/26/2015

Current:
Penguin: 2002 XLT 3.SLOW 4x2

River/Kaitlyn: 2003 EDGE 3.GO! 4x2... For now?
~Aspiring Mini Level 2~

Back To Top PM Quote Reply

Current time is 09:48 pm Top Page:    1  2  3  Next Page Last Page    

Ford-Rangers.com Ranger Forum > Tech Section > Drivetrain Tech > Ranger and Explorer/mountaineer rear end /differential info

Users viewing this topic



© 2007-2020 Chris -N- Jim
Page processed in 0.3222 seconds (15% database + 85% PHP). 115 queries executed.