MarkZ28 wrote:
Lunchbox lockers are an option. The are kid of like a Detroit locker in that under power both axles lock together in the differential. On corners they release so they can turn without binding. They do make clicking and sometimes banging noises in tight turns but wont hurt anything. They arent as strong as an OX or ARB but are a decent cost effective locker. I had one in the rear of a 76 FJ40, thing would go places in 2wd than the non locked truck could go in 4wd. That was the Powertrax LockRite. I just got Spartan lockers for both ends of my liberty, they are pretty good for even less money than Lockrites but easier to install/remove. What was nice in the FJ40 was that the transfer case was nanual and by cutting out a notch in the shifter guide plate I could get 2 high, 2 low, 4 high, and 4 low.
They're also not very friendly to street driven rugs unless driven properly. They only unlock if you don't send torque through the axle. So even if you hold steady gas through a turn they'll stay locked. You have to coast most if not all of it or you'll drag a tire and cause excessive wear.
OP, no factory lockers just the traction control which does a decent job. Honestly best bet for a DD is to go selectable lockers like arb, ox, or Eaton. But those are usually pretty pricey. Or you can go with a good limited slip like a Detroit truetrac for a little less money. You can run lunchbox lockers, but they tend to add more wear and tear and aren't the best on the street. You also need to keep in mind that if someone else drives the Jeep will they know how to handle that?
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