Sep 21, 2015, 03:49 PM
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XJ Ask the Question Thread
Herp Derp Jerp
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
No mechanic here either lol.
I forgot to mention that if you swap the whole DS the axles must be the same D35 and C8.25 are different sizes, as a result the C8.25 DS is shorter. If you don't have the same axle under both you can swap just the yoke. You can find details on that procedure in a writeup or video on how to change drive shaft U joints.
Angle chart regarding shimming:
These are just example numbers. With an SYE the pinion U joint should be flat under load, so aim a degree or two under the DS. This is why "at the tcase output" is easy. All of the angle work should be done at the double cardan joint.
I forgot to mention that if you swap the whole DS the axles must be the same D35 and C8.25 are different sizes, as a result the C8.25 DS is shorter. If you don't have the same axle under both you can swap just the yoke. You can find details on that procedure in a writeup or video on how to change drive shaft U joints.
Angle chart regarding shimming:
These are just example numbers. With an SYE the pinion U joint should be flat under load, so aim a degree or two under the DS. This is why "at the tcase output" is easy. All of the angle work should be done at the double cardan joint.
Senior Member
Joined: Apr 2012
Posts: 638
Likes: 0
From: Huntsville, Tn
Year: Different Years (I have several XJ's)
Model: Cherokee
Engine: 4.0 HO
No mechanic here either lol. I forgot to mention that if you swap the whole DS the axles must be the same D35 and C8.25 are different sizes, as a result the C8.25 DS is shorter. If you don't have the same axle under both you can swap just the yoke. You can find details on that procedure in a writeup or video on how to change drive shaft U joints. Angle chart regarding shimming: These are just example numbers. With an SYE the pinion U joint should be flat under load, so aim a degree or two under the DS. This is why "at the tcase output" is easy. All of the angle work should be done at the double cardan joint.
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
CF Veteran
Joined: Aug 2011
Posts: 1,994
Likes: 8
From: San Jose
Year: 89
Model: Cherokee
Engine: 4.0 I6
No mechanic here either lol.
I forgot to mention that if you swap the whole DS the axles must be the same D35 and C8.25 are different sizes, as a result the C8.25 DS is shorter. If you don't have the same axle under both you can swap just the yoke. You can find details on that procedure in a writeup or video on how to change drive shaft U joints.
Angle chart regarding shimming:
These are just example numbers. With an SYE the pinion U joint should be flat under load, so aim a degree or two under the DS. This is why "at the tcase output" is easy. All of the angle work should be done at the double cardan joint.
I forgot to mention that if you swap the whole DS the axles must be the same D35 and C8.25 are different sizes, as a result the C8.25 DS is shorter. If you don't have the same axle under both you can swap just the yoke. You can find details on that procedure in a writeup or video on how to change drive shaft U joints.
Angle chart regarding shimming:
These are just example numbers. With an SYE the pinion U joint should be flat under load, so aim a degree or two under the DS. This is why "at the tcase output" is easy. All of the angle work should be done at the double cardan joint.
Newbie
Joined: Feb 2014
Posts: 6
Likes: 0
Model: Cherokee
4.0 , cylinder 1 at 60 PSi
I have a 1989 jeep Cherokee that I was gifted. It has 168k miles . I ran a compression test on all cylinders, and got 130-150 on all but number one. Could I replace just the rings on that one piston? I'm not exactly the richest person, I cant afford a whole rebuild or new engine.
CF Veteran
Joined: Aug 2011
Posts: 1,994
Likes: 8
From: San Jose
Year: 89
Model: Cherokee
Engine: 4.0 I6
I have a 1989 jeep Cherokee that I was gifted. It has 168k miles . I ran a compression test on all cylinders, and got 130-150 on all but number one. Could I replace just the rings on that one piston? I'm not exactly the richest person, I cant afford a whole rebuild or new engine.
Herp Derp Jerp
Joined: Nov 2011
Posts: 18,251
Likes: 17
From: Parham, ON
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
I have a 1989 jeep Cherokee that I was gifted. It has 168k miles . I ran a compression test on all cylinders, and got 130-150 on all but number one. Could I replace just the rings on that one piston? I'm not exactly the richest person, I cant afford a whole rebuild or new engine.
