• Welcome Visitor! Please take a few seconds and Register for our forum. Even if you don't want to post, you can still 'Like' and react to posts.

Best locker/limited slip for the money?


Dave18

Member
Joined
May 31, 2011
Messages
33
Reaction score
0
Points
6
Location
Littleton, Colorado
Transmission
Manual
2WD / 4WD
2WD
Hi all,
I have a 2002 Mazda B3000 with RWD and the "dual sport" off road suspension. I don't plan to use the truck off road very much, but I like to be able to do simple trails and the truck has to be capable of getting me to trailheads...

Anyway I was thinking the best way to increase the off road performance of the two wheel drive would be to install a limited slip or locking diff. From basic research, I've gathered that the best for off road is an actual locker like the ARB air locker or Eaton's "e-Locker," but I can't justify spending $800-$1000 with college next year.

I've also gathered that autolockers like the detroit lockers are cheaper and work well off road, but I can't afford to lose any street capability, which is 95% of my driving!


This leaves me with limited slip- will this actually help off road? I would imagine its better than nothing... Anyway I'm pretty new to this but I'm very interested in the way vehicles work. Do any of you experienced types have advice on how to increase off road capability on a budget? Any help is greatly appreciated!
 


Rock Auto 5% Discount Code: F9A1A579ACFAD1: October 1st, 2021

maroon ranger

Member
Joined
Nov 17, 2008
Messages
190
Reaction score
0
Points
16
Age
31
Location
East Helena, Montana
Vehicle Year
1994 4.0L proje
Make / Model
Ford
Engine Size
4.0L
Transmission
Manual
I would go limited slip. And then add about 4 ounces of friction modifier or whatever its called. Add that and the limited slip is noticeably more catchier. Add a little bit of brake pressure in sticky situations and it acts just as good as a locker.
 

Sasquatch_Ryda

Well-Known Member
Ford Technician
OTOTM Winner
Solid Axle Swap
Forum Staff - Retired
TRS Banner 2012-2015
Joined
Aug 8, 2007
Messages
7,914
Reaction score
92
Points
48
Age
34
Location
Terrace, BC, Canada
Vehicle Year
1991
Make / Model
Ford
Engine Type
4.0 V6
Engine Size
4.0L
Transmission
Automatic
2WD / 4WD
Solid Axle Swap 4x4
Tire Size
40s
I would go limited slip. And then add about 4 ounces of friction modifier or whatever its called. Add that and the limited slip is noticeably more catchier. Add a little bit of brake pressure in sticky situations and it acts just as good as a locker.
A limited slip without friction modifier will grab harder than one with it...

Friction modifier is added to stop it from chattering around corners so soccer mom's don't bitch.
 

-Nathan-

New Member
Article Contributor
V8 Engine Swap
Solid Axle Swap
TRS Banner 2012-2015
Joined
Jun 6, 2009
Messages
1,918
Reaction score
30
Points
0
Location
Saskatoon, SK, Canada
Vehicle Year
1993 / 2001
Make / Model
Ford
Engine Size
HO 5.0 / 7.3 PSD
Transmission
Manual
I would go limited slip. And then add about 4 ounces of friction modifier or whatever its called. Add that and the limited slip is noticeably more catchier. Add a little bit of brake pressure in sticky situations and it acts just as good as a locker.
You have no idea what you're talking about, and are providing the OP with false information.

Get a lockright, I ran one in my daily driver, its cheap and effective. A limited slip can never be compared to a locker, limited slips are just that, they still slip. And friction modifier has nothing to do with adding friction, it in fact reduces the way the clutches grab to eliminate noise.
 

Hahnsb2

New Member
TRS Banner 2010-2011
Joined
Aug 8, 2007
Messages
4,416
Reaction score
36
Points
0
Age
32
Location
Battle Ground WA
Vehicle Year
88-95
Make / Model
Ford-Dodge
Engine Size
4.0-5.2 Turbo
Transmission
Manual
An LSD is better than nothing but still nearly useless off-road. I would go with a Lock-Right. I've daily driven locked vehicles for 4 years now and wouldn't go back to open or LSD.
 

maroon ranger

Member
Joined
Nov 17, 2008
Messages
190
Reaction score
0
Points
16
Age
31
Location
East Helena, Montana
Vehicle Year
1994 4.0L proje
Make / Model
Ford
Engine Size
4.0L
Transmission
Manual
apparently im talkin out of my ass, sorry guys. But let me explain, i rebuilt my lsd clutch pack last summer and filled it with royal purple 75W140 which already has the friction modifier in it. After a couple thousand miles of break in i was unhappy about how piss poor the LS grabbed. So i was talkin with a buddy of mine and he said to add "this" (in this case i cant remember what "this" was.) and sure as shit after adding it i was surprised as to how well the LS grabbed now. So i took it out and started testing it off road. seemed to be the right amount of grab and right amount let loose. well i ended up stuck in a drift and had both wheels spinning until i hit dirt with the left and then the LS let go and was just spinning the right, so out of curiosity i used a little bit of brake pressure and got both wheels spinning one diggin in dirt and the other in snow. so just sayin from my experiences LS has worked really well for me. Sorry for any inconvinience and false statements from my first post.
 

HsOffRoad

New Member
Joined
May 15, 2011
Messages
13
Reaction score
2
Points
0
Location
Media, PA
Vehicle Year
1988
Make / Model
Ford
Engine Size
2.9L
Transmission
Manual
Assuming that you don't have a trac loc in it now (which would complicate things, because you would have to swap out the carrier in order to upgrade the differential), short of welding the thing, your two cheapest options are going to be a lock right, or a mini spool.

Personally, I prefer spools over locking differentials in rear axle applications. They are more predictable, cheaper, simpler, and have fewer parts to break or wear out.

They offer mini spools for 28 spline 8.8 applications that allow you to retain the c-clip style axle retention, but installing a set of c-clip eliminators isn't a bad idea (Installing c-clip eliminators would also allow you to run a full spool instead of a mini spool. However, I don't know of anyone who makes 8.8 full spools for 28 spline shafts, and the installation is more coplicated).

If you go with the Lock Right, you can keep the c-clip style axle retention, but again, it would also work with a set of c-clip eliminators.

Cost wise, figure on between $60 and $100 for a mini spool, around $150 for a set of decent c-clip eliminators, and between $300 and $400 for a lock right.

A drop in mini spool that allows you to keep your c-clip axle retention will certainly be the cheapest option - the entire upgrade should run you less than $100.


-Hans
 
Last edited:

disciplerocks

July 2011 OTOTM Winner
V8 Engine Swap
OTOTM Winner
Solid Axle Swap
TRS Banner 2012-2015
Joined
May 27, 2010
Messages
4,522
Reaction score
53
Points
48
Location
Evansville, IN
Vehicle Year
1989
Make / Model
Ford
Engine Size
4.0
Transmission
Automatic
Weld it and be done with it.
 

alwaysFlOoReD

Forum Staff Member
Forum Moderator
TRS Banner 2012-2015
TRS 20th Anniversary
Joined
Apr 13, 2009
Messages
11,161
Reaction score
1,898
Points
113
Location
Calgary, Canada
Vehicle Year
'91, '80, '06
Make / Model
Ford, GMC,Dodge
Engine Size
4.0,4.0,5.7
Transmission
Manual
2WD / 4WD
4WD
Cheapest would be welding, but I went with my homemade limited slip: I added an extra used side gear [ not sure of terminology ] washer to my conventional rear. When fresh it's pretty close to a locker. And you can do it to the front as well.

Richard
 

legoms013

09/2013 OTOTM
Article Contributor
OTOTM Winner
Solid Axle Swap
Joined
Apr 7, 2008
Messages
2,629
Reaction score
26
Points
0
Location
CA
Vehicle Year
1996
Make / Model
Ford Ranger
Engine Size
4.0L V6
Transmission
Automatic
I suggest a Powertrax No-slip. Very street-able and very worth the money off road.

If you can't pipe up the extra $150 or so, get the Powertrax Lock-Rite. But b/c it is cheaper you will loose some of its streetabiltiy and there will be more noises etc. Not much but there is a difference in the two models noticability in daily driving.

Most will suggest a Lock-Rite, welding the spiders, or swapping a L/S carrier in. Those are your cheapest options.
 

4.0B2

Well-Known Member
Supporting Member
TRS Banner 2012-2015
Joined
Sep 24, 2009
Messages
10,701
Reaction score
148
Points
63
Location
Walls, MS
Vehicle Year
1988
Make / Model
Ford
Engine Size
4.0 v6
Transmission
Automatic
i love my Aussie's that i've ran..

so my vote is for Aussie.. or Lock-rite. b/c of the money involved and they are both good lockers.
 

Dave18

Member
Joined
May 31, 2011
Messages
33
Reaction score
0
Points
6
Location
Littleton, Colorado
Transmission
Manual
2WD / 4WD
2WD
First off, thanks for the help! Like I said I'm new so my learning curve is through the roof right now!
Just to clarify, the main purpose of the truck is for street and highway driving. I can't really install anything that would affect the street characteristics of the truck. Another thing I forgot to mention is that I live in Colorado, so snow can be a problem in the winter. I heard that lockers are "low side finders" on snow and ice, which was one reason I was looking to limited slip.

I checked the axle codes, and I have a 7.5" open axle with gear ratio 3.73. I know this is the smaller axle Ford offers in the Ranger, so would it be able to take a true locker? I'd rather get stuck than break an axle...

So far it sounds like the main options are the "Powertrax No-Slip," (pending street capability), or a limited slip of some kind. (pending off-road capability)
 

Hahnsb2

New Member
TRS Banner 2010-2011
Joined
Aug 8, 2007
Messages
4,416
Reaction score
36
Points
0
Age
32
Location
Battle Ground WA
Vehicle Year
88-95
Make / Model
Ford-Dodge
Engine Size
4.0-5.2 Turbo
Transmission
Manual
Having had both, I'll take a Lock-Right over the No-Slip. Last I checked the No-Slip isn't even made for the 7.5. Any locker or limited slip will spin both tires on snow and ice, I would rather have that than spinning one tire and not moving. Not to mention open diffs are very unpredictable in snow and ice.
 
Last edited:

Captain Ledd

Well-Known Member
Article Contributor
V8 Engine Swap
Joined
Aug 7, 2007
Messages
2,384
Reaction score
38
Points
48
Location
Michigan
Vehicle Year
1984, 1997
Make / Model
Ford
Engine Size
302, 2.3
Transmission
Manual
My credo
If you're not making mistakes, you're not learning.
The 7.5" has limited parts availability.

There are no selectable lockers for a 7.5", so that's out. (cost was already out anyways)

Aussie (lunchbox locker) doesn't make one for the 7.5" either, that one has decent street manners.

However, they do make a variety of limited slips, and some very good ones. Detroit makes a "tru-trac" differential, which is a very high end torsen limited slip for a little under $500. Probably the best option for the money. Won't wear out like chutches, is tighter than clutches and will stay tighter over time, and really only at most $200 more than even a actual locker (Powertrax Lock-right - about $350). A new clutch l/s will still run at least $250-$300, not including another clutch pack to tighten it up.

If you don't have the money for a full-on selectable (and consequently an axle swap), my vote is for the Detroit Tru-trac.

http://broncograveyard.com/bronco/i-92272-7-5-true-trac-differential.html
 


Top