Swapping open rear end to limited slip
#1
Swapping open rear end to limited slip
Greetings,
After all of the snow we had this year, I'm really starting to hate the open rear in my 93. Looking around a bit, I see that there are center section kits that you can buy that are already set up. Essentially, I'd like to get away with pulling the axles, replacing the center section, and popping in a limited slip center section. Of course, rear axle bearings and seals would be replaced, and if the ring gear isn't too worn/torn up I'd just swap that over to the new carrier as well. Any pitfalls I'd be looking at? I know better than to mess with the Pinion, and the seal and everything seemed good and not leaking when I pulled the driveshaft last summer. I'm currently not seeing any issues with the rear end at all. I'm not planning on changing the gear ratio at all. The diff fluid is likely 20 plus years old, but I'm not changing it out until I tackle this project. I'm so sick of a one wheel peel on ice. My 96 Explorer has a limited slip in the rear, and its so much easier to get going on bad days. I'm not sure if a limited slip is available for the front, but that would be nice as well. Any pros/cons with a limited slip vs a locker in the rear?
Thanks in advance!
After all of the snow we had this year, I'm really starting to hate the open rear in my 93. Looking around a bit, I see that there are center section kits that you can buy that are already set up. Essentially, I'd like to get away with pulling the axles, replacing the center section, and popping in a limited slip center section. Of course, rear axle bearings and seals would be replaced, and if the ring gear isn't too worn/torn up I'd just swap that over to the new carrier as well. Any pitfalls I'd be looking at? I know better than to mess with the Pinion, and the seal and everything seemed good and not leaking when I pulled the driveshaft last summer. I'm currently not seeing any issues with the rear end at all. I'm not planning on changing the gear ratio at all. The diff fluid is likely 20 plus years old, but I'm not changing it out until I tackle this project. I'm so sick of a one wheel peel on ice. My 96 Explorer has a limited slip in the rear, and its so much easier to get going on bad days. I'm not sure if a limited slip is available for the front, but that would be nice as well. Any pros/cons with a limited slip vs a locker in the rear?
Thanks in advance!
#2
Senior Member
Easy swap just make sure you get the 31 spline carrier not the 28 spline.
#3
Senior Member
Get the ford racing 31 spline 8.8 cobra trac-lok differential - can't be beat for the money. I have it in my truck and its great:
https://www.summitracing.com/parts/f...RoCDbgQAvD_BwE.
If you are switching carriers then I am 98% certain you need to re-do the shims to get the backlash/pattern right. And if it were me I wouldn't think of doing it unless I was replacing the pinion bearings and seal. Those will go before anything else in the rear end.
Limited slips/lockers are available for the front but generally not necessary for street use. I wouldn't consider adding one unless you drive in the snow or mud a lot.
If you want to go the really cheap route, just find a complete rear end with the same gear ratio and a limited slip from a local junkyard. Pop it open, put in new clutch packs and oil, make sure the brakes and internals are ok, and send it.
https://www.summitracing.com/parts/f...RoCDbgQAvD_BwE.
If you are switching carriers then I am 98% certain you need to re-do the shims to get the backlash/pattern right. And if it were me I wouldn't think of doing it unless I was replacing the pinion bearings and seal. Those will go before anything else in the rear end.
Limited slips/lockers are available for the front but generally not necessary for street use. I wouldn't consider adding one unless you drive in the snow or mud a lot.
If you want to go the really cheap route, just find a complete rear end with the same gear ratio and a limited slip from a local junkyard. Pop it open, put in new clutch packs and oil, make sure the brakes and internals are ok, and send it.
#4
Get the ford racing 31 spline 8.8 cobra trac-lok differential - can't be beat for the money. I have it in my truck and its great:
https://www.summitracing.com/parts/f...RoCDbgQAvD_BwE.
If you are switching carriers then I am 98% certain you need to re-do the shims to get the backlash/pattern right. And if it were me I wouldn't think of doing it unless I was replacing the pinion bearings and seal. Those will go before anything else in the rear end.
Limited slips/lockers are available for the front but generally not necessary for street use. I wouldn't consider adding one unless you drive in the snow or mud a lot.
If you want to go the really cheap route, just find a complete rear end with the same gear ratio and a limited slip from a local junkyard. Pop it open, put in new clutch packs and oil, make sure the brakes and internals are ok, and send it.
https://www.summitracing.com/parts/f...RoCDbgQAvD_BwE.
If you are switching carriers then I am 98% certain you need to re-do the shims to get the backlash/pattern right. And if it were me I wouldn't think of doing it unless I was replacing the pinion bearings and seal. Those will go before anything else in the rear end.
Limited slips/lockers are available for the front but generally not necessary for street use. I wouldn't consider adding one unless you drive in the snow or mud a lot.
If you want to go the really cheap route, just find a complete rear end with the same gear ratio and a limited slip from a local junkyard. Pop it open, put in new clutch packs and oil, make sure the brakes and internals are ok, and send it.
#5
Senior Member
Many options, it's a pretty easy DIY project with many ways to get a bad result.
#6
Senior Member
https://www.summitracing.com/parts/fms-m-4204-t31