TJM air locker
#1
03-19-2019 | 01:55 PM
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Three Wheeling
Joined: Mar 2017
Posts: 70
Likes: 5
From: San Diego CA
#3
03-19-2019 | 03:33 PM
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Three Wheeling
Joined: Mar 2017
Posts: 70
Likes: 5
From: San Diego CA
yeah thats what I should have done! This will also serve as a lesson learned.. One of our club members bought a TJM for his 04 D2 (P38 style diff) it wouldnt fit! Everyone in club figured they sent the one for early D2 so I took it off his hands for my 99 D2, guess what, it wont fit either. So now we believe it will only fit a Range Rover P38 rear diff. Gonna try and find someone with a P38 to see if they want a locker and try it out. TJM parts availability in US really bad, I asked how long would it take to get one and I was told about 3 months. Unless I paid air freight for an extra $200 ish.
#4
03-19-2019 | 04:58 PM
Pro Wrench
Joined: May 2016
Posts: 1,617
Likes: 184
From: Lake Tahoe
Did you get a full diff from Ashcroft? I want to peg it, and by pricing out the difference of rebuilding the diff myself, vs paying aschroft ~$1,400 per diff to do everything for me.. it's kind of a no-brainer to order a complete diff. the difference is like 150 bucks. It would be fun to rebuild them... but hard to justify the savings
#5
03-20-2019 | 12:47 PM
Three Wheeling
Joined: Jan 2019
Posts: 76
Likes: 5
yeah thats what I should have done! This will also serve as a lesson learned.. One of our club members bought a TJM for his 04 D2 (P38 style diff) it wouldnt fit! Everyone in club figured they sent the one for early D2 so I took it off his hands for my 99 D2, guess what, it wont fit either. So now we believe it will only fit a Range Rover P38 rear diff. Gonna try and find someone with a P38 to see if they want a locker and try it out. TJM parts availability in US really bad, I asked how long would it take to get one and I was told about 3 months. Unless I paid air freight for an extra $200 ish.
I was under the impression that all the disco diffs were the same? Even the d1 with the exception of the input flange.
#6
03-20-2019 | 01:02 PM
Three Wheeling
Joined: Jan 2019
Posts: 76
Likes: 5
Yes, ashcroft seems to be the way to go. They're on my wishlist
Did you get a full diff from Ashcroft? I want to peg it, and by pricing out the difference of rebuilding the diff myself, vs paying aschroft ~$1,400 per diff to do everything for me.. it's kind of a no-brainer to order a complete diff. the difference is like 150 bucks. It would be fun to rebuild them... but hard to justify the savings
Did you get a full diff from Ashcroft? I want to peg it, and by pricing out the difference of rebuilding the diff myself, vs paying aschroft ~$1,400 per diff to do everything for me.. it's kind of a no-brainer to order a complete diff. the difference is like 150 bucks. It would be fun to rebuild them... but hard to justify the savings
That at being said, if you change your gearing, pull out the dykem pen, indicator, and be prepared to spend a couple hours shimming+ setting backlash. A pro can get it done in no time, but im not a pro.
I chose not to peg, was told it wasn’t necessary. Maybe with a 4.7 it would be. But the 4.1 even 4.37 should be fine, also anything above 35” you’d want to peg. But that’s kinda the assumption if you’re running >4.37 gearing.
#7
03-20-2019 | 01:58 PM
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Three Wheeling
Joined: Mar 2017
Posts: 70
Likes: 5
From: San Diego CA
ok so I found out the locker I have is in fact compatible with the late 02-04 Disco 2 rear end. My buddy had other issues and thats why he couldnt use the locker. I'm not sure on D1 rear ends.
#9
03-20-2019 | 03:03 PM
Pro Wrench
Joined: May 2016
Posts: 1,617
Likes: 184
From: Lake Tahoe
I picked up just the locker unit itself, unless you regear, there isn’t really a reason to pick up a full diff. IMO if you are able to pull it out, you can set it up. It’s not rocket science. I used to set up diffs by feel, you can feel proper backlash. Just take note of what it felt like before you take it apart.
That at being said, if you change your gearing, pull out the dykem pen, indicator, and be prepared to spend a couple hours shimming+ setting backlash. A pro can get it done in no time, but im not a pro.
I chose not to peg, was told it wasn’t necessary. Maybe with a 4.7 it would be. But the 4.1 even 4.37 should be fine, also anything above 35” you’d want to peg. But that’s kinda the assumption if you’re running >4.37 gearing.
Last edited by Jeff Blake; 03-20-2019 at 03:07 PM.
#10
03-20-2019 | 03:16 PM
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Three Wheeling
Joined: Mar 2017
Posts: 70
Likes: 5
From: San Diego CA