--- axles question --- locked and open ---
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Joined: Oct 2014
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From: Oman
Year: 2001
Model: Cherokee
Engine: 4.0
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Joined: Nov 2009
Posts: 8,172
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From: The Republic of TEXAS
Year: 1998
Model: Cherokee
Engine: 4.0L HO
Until u pull the diff cover, for a look see of the diff internals (and post a pic), u can not be 100% positive that it's a traction enhanced diff internally of some sort. Even open diffs can leave 2 marks on pavement/sand (under certain conditions, for a while).
CF Veteran
Joined: Nov 2009
Posts: 8,172
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From: The Republic of TEXAS
Year: 1998
Model: Cherokee
Engine: 4.0L HO
FWIW, here's a C 8.25 open diff before and after being converted to a auto locker (PowerTrax No-Slip). This conversion/install takes about 2 hours and half of that is spent removing the cover, scraping the old gasket, cleaning, re-installing the cover and re-filling with gear oil.
Last edited by djb383; Dec 8, 2014 at 06:59 PM.
CF Veteran
Joined: Sep 2010
Posts: 12,692
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From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
The suspense is killing me, did he noggin poke yet.
OP, since the axle is new to you, regardless if its open/limited slip etc, you should open It up, clean it, inspect and close back. Fill with appropriate fluid so you know its healthy. Same with its bearings. Also, how did you check to see it was LS. Other that all Asia yadda yadda yadda. Did you lift the rear and spin the tire clockwise by hand and see what the other tire did.
OP, since the axle is new to you, regardless if its open/limited slip etc, you should open It up, clean it, inspect and close back. Fill with appropriate fluid so you know its healthy. Same with its bearings. Also, how did you check to see it was LS. Other that all Asia yadda yadda yadda. Did you lift the rear and spin the tire clockwise by hand and see what the other tire did.
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
Until u pull the diff cover, for a look see of the diff internals (and post a pic), u can't be 100% positive that it's a traction enhanced diff internally of some sort. Even open diffs can leave 2 marks on pavement/sand (under certain conditions, for a while).
FWIW, here's a C 8.25 open diff before and after being converted to a auto locker (PowerTrax No-Slip). This conversion/install takes about 2 hours and half of that is spent removing the cover, scraping the old gasket, cleaning, re-installing the cover and re-filling with gear oil.
CF Veteran
Joined: Nov 2009
Posts: 8,172
Likes: 17
From: The Republic of TEXAS
Year: 1998
Model: Cherokee
Engine: 4.0L HO
Those pics r 4 1/2 years ago......still seeing 2 black marks and 1 big ol' grin in the rear view mirror today.
Last edited by djb383; Dec 8, 2014 at 09:38 PM.
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
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Joined: Jan 2014
Posts: 1,540
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From: District of Columbia
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0
I'm seriously considering the PowerTrax for my C8.25 as well. How is it on the street, particularly on wet pavement when powering out of turns? My XJ is primarily a DD in the city/burbs, the the locking would be good for the beach, trails, and deep snow.
CF Veteran
Joined: Nov 2009
Posts: 8,172
Likes: 17
From: The Republic of TEXAS
Year: 1998
Model: Cherokee
Engine: 4.0L HO
Our XJ is a DD on the street. The PowerTrax No-Slip is almost as invisible as a clutch type LSD.
With any traction enhanced diff on slick pavement u can't drive with SFB syndrome. Be smart/behave oneself and the torque of both wheels driving is way better than a one tire fire. Most auto lockers ratchet/click in a turn......the PowerTrax No-Slip is the only auto locker, that I'm aware of, that makes no noise in a turn. Install is easy....there's no ring/pinion set-up required.
Auto lockers r always locked, except in a tight turn. In a turn, they unlock and allow axles to differentiate. As soon as both wheels r turning the same speed, they lock.
With any traction enhanced diff on slick pavement u can't drive with SFB syndrome. Be smart/behave oneself and the torque of both wheels driving is way better than a one tire fire. Most auto lockers ratchet/click in a turn......the PowerTrax No-Slip is the only auto locker, that I'm aware of, that makes no noise in a turn. Install is easy....there's no ring/pinion set-up required.
Auto lockers r always locked, except in a tight turn. In a turn, they unlock and allow axles to differentiate. As soon as both wheels r turning the same speed, they lock.
Last edited by djb383; Dec 8, 2014 at 10:05 PM.
CF Veteran




Joined: Jan 2014
Posts: 1,540
Likes: 351
From: District of Columbia
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0
Our XJ is a DD on the street. The PowerTrax No-Slip is almost as invisible as a clutch type LSD.
With any traction enhanced diff on slick pavement u can't drive with SFB syndrome. Be smart/behave oneself and the torque of both wheels driving is way better than a one tire fire. Most auto lockers ratchet/click in a turn......the PowerTrax No-Slip is the only auto locker, that I'm aware of, that makes no noise in a turn. Install is easy....there's no ring/pinion set-up required.
With any traction enhanced diff on slick pavement u can't drive with SFB syndrome. Be smart/behave oneself and the torque of both wheels driving is way better than a one tire fire. Most auto lockers ratchet/click in a turn......the PowerTrax No-Slip is the only auto locker, that I'm aware of, that makes no noise in a turn. Install is easy....there's no ring/pinion set-up required.
My understanding is that the diff remains locked in turns when under power, and you need to lift off (or maybe just back of to light throttle) to get it to uncouple. With that in mind, is there a different driving style with that diff in the wet or snow. Either way, that seems to be the best lunchbox locker on the market.



