2025 Front Limited Slip? Yes I tried to search first.

[Shelter Green]

Ford Performance now offers a Torsen for the newer Raptors. I have been researching the issue but not decided one way or another. I suspect that a front locker (electronic, vacuum, whatever) might be a better choice. Torsens have no real advantage when one wheel is lifted although the stock traction management might still help.

 

[Muchmore]

Ford Performance now offers a Torsen for the newer Raptors. I have been researching the issue but not decided one way or another. I suspect that a front locker (electronic, vacuum, whatever) might be a better choice. Torsens have no real advantage when one wheel is lifted although the stock traction management might still help.

That's not exactly accurate. Even with a wheel lifted both wheels have to turn. The PRO of a Torsen is that one wheel can turn incredibly slower than the other keeping from torque steer but both wheels have to turn, resisted or not.

 

[Shelter Green]

Hi Danny,

Both wheels may be turning but if one is in the air, no torque will be added to the one on the ground is my understanding. The one in the air will spin like crazy. Is this consistent with what you are saying?

My understanding of a Torsen is that the internal gearing can multiply the torque applied to the "other wheel" when one wheel has minimal traction. If that wheel is in the air it cannot absorb any torque and zero times the "multiplication factor" is still zero. A Torsen behaves like a limited slip differential, torque applied to both wheels, when both wheels are on the ground. Raise one wheel and it behaves like an open differential. If this view is incorrect or incomplete I am interested in understanding where it goes wrong.

Furthermore, if the brake on the up wheel (only) were applied, then the wheel on the ground would receive engine torque was if the up wheel had corresponding traction (times the multiplication factor). There are hints that the electronic traction control behaves in that manner but I have only found hints. It would be excellent if the electronics can sense wheel spin and react to improve traction. Is there any published information about that question?

I am also looking for clarity about the suitability of adding a Torsen to 2023 and newer Raptors. Would that screw up any of the electronics? How about some other form of locker on the front? For instance could the Ford eLocker from the rear be added to the front axle? I have not seen any discussion along those lines and it is an obvious feature if practical.

 

[MDJAK]

After reading this thread, which is interesting and educational, I can add I’ve had it and not had it as I’ve had Gen2 and Gen3. Going over the bollards in Costco and over the curb in Starbucks drive-thru I’ve felt zero difference. As for real lockers, rear, middle and front, I thought only @Oldfart ’s goats have that. At least that’s what he told me.

 

[thatJeepguy]

You are much better served getting a Detroit e locker in the front wired to an up fitter switch with a safety catch. LSD’s are nit linear and activate predictably in some cases and randomly in others. Anyone serious about off-roading is much better with a positive locking solution either electronic or pneumatic. Frequently the scenario where getting half way up an obstacle and needing to disengage the front locker to stop the binding from high angle steering input.