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Gen 1 rear locker ? #1105727 09/26/20 02:29 PM
Joined: Aug 2020
Posts: 29
T
Trailmonkey Offline OP
Getting the Wheeling Fever
Looking to see if I can find a spider gear replacement locker, I've searched till my head hurts, all I can find is the Aussie locker for the front. ARB for the rear. I don't want an air locker nor can I afford one.
Don't want a LSD either.
Also do I have a 28 or 31 spline rear ?

91 (gen1) 3.0L V6 Auto..

Or just weld it shut ? It won't see a lot of in town and parking lots, so tire grindidge is OK. Lol


91 (Gen1) Monty, 3.0L V6, Auto 4 Door.
Disabled Driver.
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Re: Gen 1 rear locker ? [Re: Trailmonkey] #1105728 09/27/20 08:21 PM
Joined: Jan 2017
Posts: 2
P
ProjectManDan Offline
Need a Spot
Sorry, I know that this doesn't really answer your question but why not an air locker?

The most economical way to get a locker (rear at least) is probably to grab a rear trailing arm/axle, and drive shaft assembly (you really only need the diff flange/u-joint yoke adapter part off of this) off of a '95/'96 SR. The little stock actuator air pump is in the jack compartment under the back seat on the passenger side (grab that too). It can be wired up with a simple on/off switch as it has it's own pressure relay built in. With this swap, you'll also gain disc brakes in the rear.

This is what I did on my Gen1, and it's pretty awesome. I think I spent less than $500 on everything including new Siberian bushings, brake pads, etc. The swap was really straight forward too. Only thing to be aware of is that the axle is a bit wider than the original, so the rear tires will stick out an extra inch-ish.
Oh, and apparently there is a changeover of u-joint type/size somewhere in the '95/'96 year. So make sure that you measure yours before taking the yoke/flange adapter. Lots of info about the swap in the TrailTalk archives that can address this though.


'91 Montero LS, LWB 3.0l V6 Auto. Rebuilt block/heads, E-Fan conv.
Happy to share my experience, but follow my example or suggestion/recommendations at your own risk.
Don't blame me if you damage your stuff. Use common sense and make your own decisions!
Re: Gen 1 rear locker ? [Re: Trailmonkey] #1105733 09/28/20 10:03 PM
Joined: Aug 2020
Posts: 29
T
Trailmonkey Offline OP
Getting the Wheeling Fever
Main reason is I'm disabled and on a very small fixed income, $500 down and $250 a month for the next 8 months is about all I can do to start with, but I can manage $250 to spend on it from time to time.
And didn't notice before but it does have the bouncy seat !!!
I was told this engine does not have any hydrologic valve adjusters. Thought all the 3.0L V6 did ?


91 (Gen1) Monty, 3.0L V6, Auto 4 Door.
Disabled Driver.
Re: Gen 1 rear locker ? [Re: Trailmonkey] #1105738 09/29/20 04:17 AM
Joined: Feb 2005
Posts: 7,312
rxinhed Offline
Trail Leader
*****
Nothing hydrologic on the engine. The 6G72 should have hydraulic lifters between the cam and valve head, I've not heard of mechanical lifters for this engine.

If your truck has the bouncy seat base as factory equipment, you already have the LSD, like it or not. This can further be verified with the orange sticker in the driver's door frame...indicating that you need to use the friction modifier.

The 9" rear differential uses 28-spline axles, I believe. The 9.5" rear diff in the later Gen 2 model for sure uses the 31-spline.

I would avoid the Lincoln Locker idea, too much hassle. There are no lunchbox lockers. I am fortunate to have acquired one of the rare Detroit rear diffs for the 9" Mitsubishi axle...very fortunate.

Re: Gen 1 rear locker ? [Re: rxinhed] #1105739 09/29/20 06:08 PM
Joined: Aug 2020
Posts: 29
T
Trailmonkey Offline OP
Getting the Wheeling Fever
Thank you very much for the info, and you lucky dog you on that axle/locker setup.
I welded up a front diff on a Samurai, it only got locked in off road and held up fine for it.
I can get an Aussie locker for the front, that and a set of a more aggressive tires, disconnect the rear sway bar to get a bit more flex, it may be good enough.
Guess I'll keep my eye out for a factory air locker..

P.S. if it has a LSD, its very weak . hahahaha

P.S.2.... No orange decal in door jam..

Last edited by Trailmonkey; 09/29/20 06:25 PM.

91 (Gen1) Monty, 3.0L V6, Auto 4 Door.
Disabled Driver.
Re: Gen 1 rear locker ? [Re: Trailmonkey] #1105740 09/30/20 02:32 AM
Joined: Feb 2005
Posts: 7,312
rxinhed Offline
Trail Leader
*****
No decal, no LSD, and a wayward bouncy seat for yours.

Good hunting!

Re: Gen 1 rear locker ? [Re: Trailmonkey] #1105741 09/30/20 03:23 PM
Joined: Aug 2020
Posts: 29
T
Trailmonkey Offline OP
Getting the Wheeling Fever
I'm more into cleaning and fixing up the interior right now.
Found carpet and seat covers.
Plan on removing the rear seat, install a plywood floor covered in the same carpet as the front floor pan.
Should look and work nice. Head liner looks great.
Replace door panels with alum diamond plate.
Relocate drivers switch panel so I can mount a grab handle .
Lots to be done, but as soon as I get my tag I'm taking it out for some trail riding.


91 (Gen1) Monty, 3.0L V6, Auto 4 Door.
Disabled Driver.
Re: Gen 1 rear locker ? [Re: Trailmonkey] #1105743 10/01/20 03:25 PM
Joined: Dec 2019
Posts: 15
B_Line Offline
Need a Spot
Check to see if you have the orange sticker in your door. Likely you do. There is the option of going Hybrid LSD too, but those are pretty hard to find.

Re: Gen 1 rear locker ? [Re: Trailmonkey] #1105744 10/01/20 03:29 PM
Joined: Aug 2020
Posts: 29
T
Trailmonkey Offline OP
Getting the Wheeling Fever
No orange sticker.


91 (Gen1) Monty, 3.0L V6, Auto 4 Door.
Disabled Driver.
Re: Gen 1 rear locker ? [Re: Trailmonkey] #1105762 10/17/20 03:14 AM
Joined: Jun 2003
Posts: 7,353
MontyMcV Offline
Trail Leader
Where are you, and can you get help for junk yard digging? The Gen 2 factory air locker can be found for a couple $hundred, especially in a U-Pull yard. Lots of info on the swap, which isn't very difficult.

On on your bouncy vs. LSD, do you have headlight washer? If so, would be really odd to bot have the LSD. If not, you likely have a swapped in boucy.

Lastly, when it comes to working on your rig, be sure to grab an FSM (Factory Service Manual). Don't rely on Chilton/Haynes.


Big Truck: 00, 3.5, Endeavor, 5-Spd drive line in hand!
Little Truck: 87, 2.6T I/C, MT, LSDs, Tonneau Top
Her Truck: 03, 3.8, 20th Anniv, 65k
Daughter's: 06 Eclipse, Keeping it Mitsu!
FSMs: MitsubishiLinks.com
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