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Gen 1 rear Axle swap #1052575 10/16/12 04:10 AM
Joined: May 2012
Posts: 684
Oso Offline OP
Rock Warrior
*****
Probably a dumb question. I've searched the forums and I've found I can swap the 95 sr axle into my Gen 1 - direct bolt up without suspension mods. Is 95 the only year SR that will do this, or will 94 & 96 too. LIke I said - probably a dumb question but my eyes are crossing reading all the posts.

Thanks in advance!


90 LWB - Not your average bear

"You are what you are, and you ain't what you ain't." - John Prine
Re: Gen 1 rear Axle swap [Re: Oso] #1052576 10/16/12 04:34 AM
Joined: Jan 2000
Posts: 16,227
off-roader Offline
Web Wheeler
*****
Thanks for reading the FAQ and searching prior posts.

Any mitsu Montero or Montero sport axle will work so long as the gear ratio is close (within 10% iirc but someone needs to confirm that) and its a coil sprung model.

The 94-96 (maybe also 97) SR with the rear locker are preferred because they have the larger 9.5" rear ring and pinion with the locking diff, the disk brakes, and the 4.6x:1 gear ratio which is the same or close enough to the orig gen 1 v6 ring and pinion gears.

HTH. <img src="/forums/images/graemlins/kewl.gif" alt="" />


Off Roader
98 Montero with the Winter Package
89 Montero minty clean and reserved for overlanding trips or Cars and Coffee events
96SR (3.15:1 xcase, 35's) gone to the rust gods
96SR Build Up Thread
Old web page
Old web page
Re: Gen 1 rear Axle swap [Re: off-roader] #1052577 10/16/12 10:17 PM
Joined: Apr 2006
Posts: 228
C
Chief Offline
Wheeler
Quote
Thanks for reading the FAQ and searching prior posts.

Any mitsu Montero or Montero sport axle will work so long as the gear ratio is close (within 10% iirc but someone needs to confirm that) and its a coil sprung model.

The 94-96 (maybe also 97) SR with the rear locker are preferred because they have the larger 9.5" rear ring and pinion with the locking diff, the disk brakes, and the 4.6x:1 gear ratio which is the same or close enough to the orig gen 1 v6 ring and pinion gears.

HTH. <img src="/forums/images/graemlins/kewl.gif" alt="" />


Sorry to correct you Ray, but 97 has the 4.27 gear ratio


'89 Raider V6, AT, SAS'ed, Dana 44 front & rear, 5:38 gears, NP 231 T-case.
'97 Montero SR, cold weather package, 4.90 R&P, BATTLEZ suspension w/ 2" lift, JAOS grill guard & under body protection, custom rock sliders.
Re: Gen 1 rear Axle swap [Re: off-roader] #1052578 10/17/12 02:03 AM
Joined: Feb 2000
Posts: 3,269
justice Offline
Roll Me Over
*****
Quote
Thanks for reading the FAQ and searching prior posts.

Any mitsu Montero or Montero sport axle will work so long as the gear ratio is close (within 10% iirc but someone needs to confirm that) and its a coil sprung model.

The 94-96 (maybe also 97) SR with the rear locker are preferred because they have the larger 9.5" rear ring and pinion with the locking diff, the disk brakes, and the 4.6x:1 gear ratio which is the same or close enough to the orig gen 1 v6 ring and pinion gears.

HTH. <img src="/forums/images/graemlins/kewl.gif" alt="" />


Also to correct..."any montero sport" axle will not work as a bolt in, and actually none will.

Also, you don't want to use a 94 or early year 95 as they have a larger pinion flange and require drive shaft modifications to fit.

If the donor is a 95 then you need to measure the pinion flange to be safe. 96 and you should be good to go. Stay away from 97 due to the 4.2 gears like chief said.

We need to be a little more responsible with the info passed here. It could cost someone some unnecessarry expenses.. <img src="/forums/images/graemlins/shame.gif" alt="" />


99 Gen 2.5, fixing blown head gasket
89 SWB- 33's, ARB Front locker, SR rear locker/axle, SR F brakes, winch, WST Offroad Armor all Around, 2.85 Aussie T-case Gears (SOLD)
Sold: (2) 95 SR's, 86 SWB, 90LWB, 91 LWB
-Can Change a timing belt in my sleep..
Re: Gen 1 rear Axle swap [Re: justice] #1052579 10/17/12 02:01 PM
Joined: Dec 2007
Posts: 2,348
Mudraider Offline
Body Damage is Cool
That pinion flange is something you seem to have to watch period.I have one out of a 98 and it is larger. Had to get that put onto my driveshaft.


89 SWB, V-6 5SPD, OME Shocks, 16.5X37's, 2"BL, SR axle, Gen2 brakes, Lincoln w/Superwinch
Re: Gen 1 rear Axle swap [Re: Mudraider] #1052580 10/17/12 04:38 PM
Joined: May 2012
Posts: 684
Oso Offline OP
Rock Warrior
*****
Thanks for the info. Does any one know what the cut off was in 95 between early and late? I can probably figure out the month in the VIN. I know my manual will give me the info how to check.

Glad you told me. The donor is a 95. Maybe i'll look for a 96. There are a few GEN 2s in the local yards.

If there are any other mods for the GEN 1 you can recommend - i'm all ears. I asked this in my other post about brakes as well.

Thanks again for the info! <img src="/forums/images/graemlins/cheers.gif" alt="" />


90 LWB - Not your average bear

"You are what you are, and you ain't what you ain't." - John Prine
Re: Gen 1 rear Axle swap [Re: justice] #1052581 10/17/12 06:09 PM
Joined: Jan 2000
Posts: 16,227
off-roader Offline
Web Wheeler
*****
Quote
Also to correct..."any montero sport" axle will not work as a bolt in, and actually none will.

Don't the sports with coil sprung rear ends work (assuming diff ratios are the same)? <img src="/forums/images/graemlins/confused.gif" alt="" />


Off Roader
98 Montero with the Winter Package
89 Montero minty clean and reserved for overlanding trips or Cars and Coffee events
96SR (3.15:1 xcase, 35's) gone to the rust gods
96SR Build Up Thread
Old web page
Old web page
Re: Gen 1 rear Axle swap [Re: off-roader] #1052582 10/18/12 12:22 AM
Joined: Mar 2003
Posts: 2,324
K
KrzyDav Offline
Body Damage is Cool
*****
I'm pretty darn sure a M.S. with coils bolts in. The arms are different on a sport but when I did measurement on a '00 , as I recall, the axle all measured the same as the Gen 2.
You might also concider LSD . Cheaper , no wiring and pumps to mess with,,no driveshaft mod. needed. I preferr my LSD for what I do plus you get advantages of LSD no matter what speed your driving. LSDs are only 9", but I've never heard of anyone breaking one.


dave h.
'89 Raider V6 5spd;Aisin Hubs;; Gen2 LS: frt. brakes, rear coils;U.C.arms;R.trailing arms;idler arm; rear LSD axle w.disc brakes ;2 battery system for Dog's fan; relocated ECU; custom bumpers;J.Baker receiver;Conferr roofrack; t-bar crank.
Re: Gen 1 rear Axle swap [Re: KrzyDav] #1052583 10/18/12 07:16 AM
Joined: Sep 2001
Posts: 8,557
LandRaider Offline
Forum Moderator
*****
All I can contribute to this thread is about leaf sprung trucks.

Montero Sport leaf sprung axles will swap into Gen 1 Leaf sprung trucks. The only issues are the rear sway bar mount on the sport axle interferes with the shock on the drivers side, and the pinion flange is not an exact match.


87 Raider 4D56td v5MT1
31's..Basically Stock
Re: Gen 1 rear Axle swap [Re: Oso] #1052584 10/18/12 11:34 AM
Joined: Feb 2000
Posts: 3,269
justice Offline
Roll Me Over
*****
Quote
Thanks for the info. Does any one know what the cut off was in 95 between early and late? I can probably figure out the month in the VIN. I know my manual will give me the info how to check.

Glad you told me. The donor is a 95. Maybe i'll look for a 96. There are a few GEN 2s in the local yards.

If there are any other mods for the GEN 1 you can recommend - i'm all ears. I asked this in my other post about brakes as well.

Thanks again for the info! <img src="/forums/images/graemlins/cheers.gif" alt="" />


There's a post where toasty nailed it down to the exact build date you'll have to search that. The original post I think was originated from "stockraider" who was having problems due the flange and got a custom drive shaft fabbed up.

As far as the Sport goes, the OP was infquiring about a Gen1 coil sprung truck which I don't believe will swap over, Although Krazydave says it should, I cold be wrong but no one has done it here, so it's unconfirmed if the coil springs sport axles will swap over my concern looking at it were the trailing arm mounts looked different to me. Anyways, the coil sprung sports never came with the locker, so IMO is not an Ideal donor for a gen I coil spring truck, even if it does fit.


99 Gen 2.5, fixing blown head gasket
89 SWB- 33's, ARB Front locker, SR rear locker/axle, SR F brakes, winch, WST Offroad Armor all Around, 2.85 Aussie T-case Gears (SOLD)
Sold: (2) 95 SR's, 86 SWB, 90LWB, 91 LWB
-Can Change a timing belt in my sleep..
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