Thoughts on 8.25 upgrades ?
Junior Member
Joined: Feb 2018
Posts: 90
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From: Edgewood nm
Year: 2000
Model: Cherokee (XJ)
Engine: 4.0
I would have to agree the 8.25 isn't as strong as the 8.8 due to ring gear diameter. But there is definitely plenty of aftermarket support for the 8.25. It's also very easy to set up gears on because of the side adjusters.
I'm scratchin' my head in regards to the comment about "lack of aftermarket support" for the 8.25.
What else does one want?
how about a c-clip eliminators. More gearing options. Tube sleeves. Cheaper prices for what is out there? Just my opinion.
it's a good axle and will take some abuse. It doesn't have the support that an 8.8 or say a Dana 44 or 60 has.
Last edited by Aecon; Apr 22, 2018 at 08:34 AM.
I would order a Pro Rock 44 or a 60 (if I was feeling "really" financially irresponsible) and be done w/ it.
That's just my opinion though and...
I'm not a ford person
Thread Starter
Senior Member
Joined: Feb 2018
Posts: 534
Likes: 2
From: Kentucky
Year: 1999
Model: Cherokee(XJ)
Engine: 4.0L I-6
Here's something else I just thought about. I have the 242 TC,,, how would you go about lockers, especially 4wdFT ? Manual hubs ??? Keeps ending up costing more. Now I'm relieved that the OEM axles in the 8.25 are strong enough, that will save some money. So if I just left the front as is, OEM, with 31s and 4.10s would those axles be fine too ? This never ends. At what point do you stop and start to wonder if you went too far ??? LoL, glad im not there yet !!!
4.10's would be a good choice for 31's, a mechanical "lunchbox" locker in the rear won't make a difference in full time w/ the 242.
A mechanical locker in the front on the street is not a good idea at all. Full time w/242 is basically "AWD", no good reason to use that off-road imo.
But if your looking to retain the AWD function for street driving I guess that's where a selectable locker comes into play.
I would just leave the front open and install a lunchbox into the 8.25 your planning on getting w/ that scenario.
A mechanical locker in the front on the street is not a good idea at all. Full time w/242 is basically "AWD", no good reason to use that off-road imo.
But if your looking to retain the AWD function for street driving I guess that's where a selectable locker comes into play.
I would just leave the front open and install a lunchbox into the 8.25 your planning on getting w/ that scenario.
Junior Member
Joined: Feb 2018
Posts: 90
Likes: 0
From: Edgewood nm
Year: 2000
Model: Cherokee (XJ)
Engine: 4.0
haha Ya I know you like the pro rocks. If I could afford those I'd have them for sure. I was just saying why I went with the 8.8 vs upgrading my 8.25. Just giving op another option. You'll spend close to the same upgrading as you would swapping and have a less sturdy axle. He said he doesn't ever want it to break.
Junior Member
Joined: Feb 2018
Posts: 90
Likes: 0
From: Edgewood nm
Year: 2000
Model: Cherokee (XJ)
Engine: 4.0
Here's something else I just thought about. I have the 242 TC,,, how would you go about lockers, especially 4wdFT ? Manual hubs ??? Keeps ending up costing more. Now I'm relieved that the OEM axles in the 8.25 are strong enough, that will save some money. So if I just left the front as is, OEM, with 31s and 4.10s would those axles be fine too ? This never ends. At what point do you stop and start to wonder if you went too far ??? LoL, glad im not there yet !!!
Thread Starter
Senior Member
Joined: Feb 2018
Posts: 534
Likes: 2
From: Kentucky
Year: 1999
Model: Cherokee(XJ)
Engine: 4.0L I-6
Ok, that sounds good. But,,, if you were to add a selectable locker to the front, naturally you could only use it in 4 Lo. So is that possible and still retain AWD ? What would happen if it got swtched while driving in 2wd ??? Doesn't sound like I can have my cake and eat it too...
Selectable hubs could be an option, op could run a mechanical "lunchbox" locker in the front and retain the 242's full time function by leaving the hubs unlocked.
I would be asking myself "but why?" though.
I would be asking myself "but why?" though.
Ok, that sounds good. But,,, if you were to add a selectable locker to the front, naturally you could only use it in 4 Lo. So is that possible and still retain AWD ? What would happen if it got swtched while driving in 2wd ??? Doesn't sound like I can have my cake and eat it too...
I "think" Yukon makes a kit for that. Don't quote me on that. I believe that option is out there for the thirty.
Expensive, comes to mind also.
Oh and btw, your not going to have AWD because the hubs aren't locked.
Locker in the front is expensive w/ 242 if you want to drive on the street in full time.
So idk, maybe you can't "have your cake and eat it to"
Locker in the front is expensive w/ 242 if you want to drive on the street in full time.
So idk, maybe you can't "have your cake and eat it to"
Thread Starter
Senior Member
Joined: Feb 2018
Posts: 534
Likes: 2
From: Kentucky
Year: 1999
Model: Cherokee(XJ)
Engine: 4.0L I-6
Doesn't sound logical, nor feasible ... A 231TC would actually be better I guess ? I don't want to go that route. Maybe someday I'll just use this XJ to pull another trailer queen XJ !!! That would be something !!! Ok auto locker, rear only, open front. That's going to save some money Thanks !
Doesn't sound logical, nor feasible ... A 231TC would actually be better I guess ? I don't want to go that route. Maybe someday I'll just use this XJ to pull another trailer queen XJ !!! That would be something !!! Ok auto locker, rear only, open front. That's going to save some money Thanks !
No full time though.
Jeeps are never logical lol!
Sounds like a good idea though, lunchbox in the 8.25 and leave the thirty alone.
CF Veteran

Joined: Nov 2015
Posts: 3,636
Likes: 469
From: Southern OH
Year: 1997
Model: Cherokee(XJ)
Engine: 4.0
I have the np242 with a front locker and it does fine but I don't really use the full time 4x4. You still can use full time with an auto locker in the front it just handles kind of weird.


