ARB rear with reused trak-loc front LSD

[Deleted member 47279]

So hear me out. ARB RD245 in the rear, and take the Trak-lok thats currently in it, rebuild the clutchpack since im already in it, and put it in my front M210. that way i can turn in 4WD with minimal wheel hop. and still have serious traction. thoughts? this is on 21 sport diesel with 3.73 gears and trak-lok antispin in the rear from factory.

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[sass JT]

No offense but it won’t work. Different axles/cases.

Worse you don’t want a lsd up front… every time you would turn your vehicle front axle would lock and you would bounce/jerk around.

I’m not an exact expert so I’ll let the axle guys school us from here

 

[Deleted member 47279]

No offense but it won’t work. Different axles/cases.

Worse you don’t want a lsd up front… every time you would turn your vehicle front axle would lock and you would bounce/jerk around.

so how does ARB RD245 fit both? i know the M210 and M220 are different, but why would it not work? also with lockers on in 4wd it would bounce anyways. i only use 4WD if i need it while wheelin.

 

[JeepOfTheseus]

No offense but it won’t work. Different axles/cases.

Worse you don’t want a lsd up front… every time you would turn your vehicle front axle would lock and you would bounce/jerk around.

I’m not an exact expert so I’ll let the axle guys school us from here

Not sure that it would lock/bind...because if that were the case, wouldn't that be a problem in the rear? Turning still makes the rear wheels rotate at different speeds, too. In any case, front axle should never really be engaged on surfaces with high traction anyways - you'd get binding regardless of LSD or lockers.

On the original question, one thought to keep in mind is that an LSD essentially becomes an open-diff (i.e. useless) if one wheel is completely in the air. And as I just mentioned, front axle isn't/shouldn't be engaged on normal surfaces, so you wouldn't be using your LSD for majority of your driving - which means you also lose the benefit of having it in the rear in the first place: better traction during normal driving but with slippery/wet conditions.

I opted for leaving my LSD in the rear and put an Eaton locker up front, in part for these reasons.

 

[Rusty PW]

My old '76 Chevy 4x4 had LSD's front and rear. My '90 Nissan V6 Hardbody 4X4 had a Detroit locker in the rear with a Quaife LSD in the front. Put over 100,000 miles on each one.

 

[ShadowsPapa]

No offense but it won’t work. Different axles/cases.

Worse you don’t want a lsd up front… every time you would turn your vehicle front axle would lock and you would bounce/jerk around.

I’m not an exact expert so I’ll let the axle guys school us from here

It won't lock. It depends on a torque difference to squeeze the clutches together and limit the speed difference.
With nothing driving the front axles (meaning if it's in 2wd) it should actually be ok. Worse case, tight corners may take more effort.
Since the carrier wouldn't be turning in 2wd, there shouldn't be torque applied to squeeze the clutch pack.

In 4 wheel drive - could be a bit more fun.

 

[rharr]

The FAD will keep the front axle disconnected in 2wd until shifted to 4wd. So wheel chatter shouldn't be an issue. Until in 4wd and then no different then a ruby locked probably better since the LSD will give.

About using a rear in the front, not sure, rotation direction might matter.

 

[ShadowsPapa]

better since the LSD will give.

About using a rear in the front, not sure, rotation direction might matter.

Yes, it shouldn't be a big deal because how hard a LSD locks depends on the torque applied, and the wheel speed difference.
I've not torn these apart, but if it's like others that use a clutch pack, it's the action of the beveled gears pushing away from each other. So if it's like what I've had in the past, direction won't matter. But again, I'm basing that on how other designs operate.

Are the carriers different front to rear? The ring gear diameter is the 220 vs 210 but is that just the ring gear, or are the carriers different?

 

[Rusty PW]

There was a thread brought back to life the other day explaining the differences in the 210M and 220M diffs.

https://www.jeepgladiatorforum.com/forum/threads/complete-axle-upgrade-bible.41619/

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