Gen 3 factory rear diff.

[citysurf]

So I found a 2004 gen 3 at a junk yard, it has the factory rear diff, also has the 3.8 motor with the 5 speed automatic, my question is, can I just put the rear locker without have to change anything else?
My car is a 2001 montero xls.
Thanks in advance
Sebastian


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[off-roader]

So I found a 2004 gen 3 at a junk yard, it has the factory rear diff, also has the 3.8 motor with the 5 speed automatic, my question is, can I just put the rear locker without have to change anything else?
My car is a 2001 montero xls.
Thanks in advance
Sebastian


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Check that the r&p ratios are the same. The ratio should be stamped on the housing (4.9, 4.6, 4.2, etc.).
Will need to pull the compressor too.
Also check if yours already has the wires/plugs for the compressor in the existing harness otherwise you'll need to wire it for power & a switch.

 

[The Viper]

wow, some genny 3s came with rear lockers??? i didnt know that

 

[Sabre]

No, they didn't. There's no locker in that diff unless someone put an aftermarket unit in there. It should be a limited slip.

The gear ratio is most easily seen on the firewall data plate. It's likely that your XLS has a lower ratio than the Ltd.

 

[MonteroLTD]

I don't think the North American montero came with a locker. Every other continent had the option.

 

[citysurf]

Yea they def came with locker, now what does the r&p (rack and pinion)? Have to do with anything.


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[Sabre]

Er, that's steering. He's talking about the gears in the diff.

If that Montero is an American model, there's no OEM locker, as stated above.

 

[GrassCat]

On the early models A torque-sensing limited-slip rear differential is standard on the Limited and optional on the Montero XLS. No lockers.

 

[lilkia]

Yea they def came with locker, now what does the r&p (rack and pinion)? Have to do with anything.


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I believe the only "locker" is in the tranfer case not the axles. R&P would be ring & pinion, as in what the differential uses to transfer power from the driveshaft to the axle.

 

[GrassCat]

I believe the only "locker" is in the tranfer case not the axles. R&P would be ring & pinion, as in what the differential uses to transfer power from the driveshaft to the axle.

I've never heard of a locker being in the transfer case. Is this new technology?

 

[jeep-N-montero]

I believe the only "locker" is in the tranfer case not the axles. R&P would be ring & pinion, as in what the differential uses to transfer power from the driveshaft to the axle.

Please explain how the transfer case could have a locker.

 

[Sabre]

He means that it has a lock function between front and rear output, i.e., "high lock" and "low lock." It's not called a "locker," but in the same sense that a locking differential locks its two axles, the transfer case can lock its two driveshafts.

 

[The Viper]

Is he confusing locking center differential with rear locker?

 

[lilkia]

He means that it has a lock function between front and rear output, i.e., "high lock" and "low lock." It's not called a "locker," but in the same sense that a locking differential locks its two axles, the transfer case can lock its two driveshafts.

This^^^^^ That is why I put locker in quotation marks. I understand it isnt a real locker as commonly defined, but I have heard someone call it a "locker".

Is he confusing locking center differential with rear locker?

That was my guess.

 

[Mrknowitall]

The term "locking differential" is common for both the center (transfer case) differential and an axle differential. But it's semantics....
Sebastian's 2001 XLS has 4.90 gears. ALL 2003 US models had 4.30 gears, 5-speed transmissions and a 3.8 V6. If the one he found is in a US/Canadian model 2003, then it is an open rear differential, unless it has an ARB (which would be a hell of a find. According to some reading (http://www.youmoto.com/Vehicle/Default.aspx?vehicle_guid=f03e8dee-bbd2-487a-b7a0-73dd65a8c9cb) V60 Pajeros had a lockable LSD standard. So at the very least, you would need to get your 4.90 ring and pinion set up with this locking diff.
Michael- this LSD- is it a Torsen/Truetrac type diff? That would actually be worth while.