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Replacing diff gears

Tech Talk for Mitsubishi owners.

Moderator: -Scott-

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Posts: 132
Joined: Tue Oct 11, 2005 9:13 pm
Location: Springfield

Replacing diff gears

Post by big wheel sigma »

Hi all, will 4.875 or 4.9 rear diff gears fit into my 3.5L diff ctr with 4.636ratio.
I'm looking at a SAS using a Hilux axle which, so I'm told don't do 4.6 gears
Jeff
Series 1 Disco 2 Door
33" Maxxis Mudders
35" Silverstone Extreme
2" Spring Lift
2" Body Lift
Warn HiMount Winch
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Joined: Thu Nov 18, 2004 7:25 pm
Location: New Zealand

Post by NJV6 »

4.9 will. I just put 4.9 gears into a 4.636 diff a month or two ago.
1994 NJ SWB, 3.5, 5 speed manual, 33's, XD9000, 4.9 diffs, Front & Rear ARB's, Safari Snorkel

2008-2009-2010-2011 Pavlova in the shed.
Posts: 132
Joined: Tue Oct 11, 2005 9:13 pm
Location: Springfield

Post by big wheel sigma »

thanks mate, do you remember what model it came from
Series 1 Disco 2 Door
33" Maxxis Mudders
35" Silverstone Extreme
2" Spring Lift
2" Body Lift
Warn HiMount Winch
Posts: 104
Joined: Wed Feb 16, 2005 2:32 pm
Location: Gold Coast

Post by glenn_c »

All 94 to 99 2.8 tdi have 4.9 diff gears
Glenn
Pajero GLX 2.8td 255/85/16 BFG muds 265/75/16 BFG AT's, articulator, 2.5inch lift, ball joint flip, rear sway bar disconnect and lots of mods.
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Joined: Thu Nov 18, 2004 7:25 pm
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Post by NJV6 »

glenn_c wrote:All LWB 94 to 99 2.8 tdi have 4.9 diff gears
Glenn
Many SWB 2.8's had 4.636's also.
(the other) Glen
1994 NJ SWB, 3.5, 5 speed manual, 33's, XD9000, 4.9 diffs, Front & Rear ARB's, Safari Snorkel

2008-2009-2010-2011 Pavlova in the shed.
Posts: 14209
Joined: Sun Jan 11, 2004 11:36 am
Location: Adelaide

Post by -Scott- »

NJV6 wrote:
glenn_c wrote:All LWB 94 to 99 2.8 tdi have 4.9 diff gears
Glenn
Many SWB 2.8's had 4.636's also.
(the other) Glen
Yes, that's OL's Australian bias coming through. :D We didn't get 2.8 shorties over here - they were grey imports only.
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Joined: Thu Nov 18, 2004 7:25 pm
Location: New Zealand

Post by NJV6 »

Yep, thats all good!

We never got them new either but the NZ market got flooded with Pajeros a few years ago. Does give good access to the vehicles though. The only SWB sold here were the 2.5 and the od 3.0 right up until well after the new motors were available.
1994 NJ SWB, 3.5, 5 speed manual, 33's, XD9000, 4.9 diffs, Front & Rear ARB's, Safari Snorkel

2008-2009-2010-2011 Pavlova in the shed.
Posts: 132
Joined: Tue Oct 11, 2005 9:13 pm
Location: Springfield

Post by big wheel sigma »

glenn_c wrote:All 94 to 99 2.8 tdi have 4.9 diff gears
Glenn
Thanks Glenn for the info
Jeff
Series 1 Disco 2 Door
33" Maxxis Mudders
35" Silverstone Extreme
2" Spring Lift
2" Body Lift
Warn HiMount Winch
User avatar
pjb
Posts: 103
Joined: Thu Sep 24, 2009 8:59 am
Location: North Shore City, New Zealand

Post by pjb »

NJV6, when changing to 4.9 gears in the 3.5l diffs, did you replace the whole diff head, or is it possible to just replace the crown and pinion?

Reason I ask is that there is a quite weill setup '94 SWB I'm thinking about aquiring. It has an ARB locker in the front and a mitsi in the rear running 33"s It has the 4.636 unfortunately, and I wouldn't want to have to ditch the ARB.

Also, how hard is it to obtain the parts???
Cheers,
Paul
94 NJ SWB, 3.5 V6, Auto, susp+body lift, 33x12.6 Maxxis Bighorns, AISIN hubs, ARB bar + tigerz11 2-speed winch, sliders, ARB and factory lockers.
Posts: 1130
Joined: Thu Nov 18, 2004 7:25 pm
Location: New Zealand

Post by NJV6 »

Is that the one in Wellington for sale?

The 4.9 gears bolt up to the 4.636 centre.

Note, the 3.5 4.9 diff is different to the 3.0 4.88 diff.

4.9's are easy enough to find.
1994 NJ SWB, 3.5, 5 speed manual, 33's, XD9000, 4.9 diffs, Front & Rear ARB's, Safari Snorkel

2008-2009-2010-2011 Pavlova in the shed.
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pjb
Posts: 103
Joined: Thu Sep 24, 2009 8:59 am
Location: North Shore City, New Zealand

Post by pjb »

It sure is. Do you have any insider knowledge?

I've been looking at putting a winch and dual batteries in, plus rock sliders. Furthermore, my poor 12-valve just doesn't breathe, so the 3.5 would be a nice improvement. So, all I would really need to do is re-gear the diffs, swap over my Aisins and I'm done.

||Paul
94 NJ SWB, 3.5 V6, Auto, susp+body lift, 33x12.6 Maxxis Bighorns, AISIN hubs, ARB bar + tigerz11 2-speed winch, sliders, ARB and factory lockers.
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