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Replacing diff gears
Posted: Wed Jan 06, 2010 5:06 pm
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
Posted: Wed Jan 06, 2010 7:21 pm
by NJV6
4.9 will. I just put 4.9 gears into a 4.636 diff a month or two ago.
Posted: Wed Jan 06, 2010 9:07 pm
by big wheel sigma
thanks mate, do you remember what model it came from
Posted: Wed Jan 06, 2010 9:36 pm
by glenn_c
All 94 to 99 2.8 tdi have 4.9 diff gears
Glenn
Posted: Thu Jan 07, 2010 4:56 am
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
Posted: Thu Jan 07, 2010 7:04 am
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.
We didn't get 2.8 shorties over here - they were grey imports only.
Posted: Thu Jan 07, 2010 8:35 am
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.
Posted: Thu Jan 07, 2010 7:19 pm
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
Posted: Mon Jan 11, 2010 9:38 am
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
Posted: Mon Jan 11, 2010 9:46 am
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.
Posted: Tue Jan 12, 2010 9:02 am
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