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XJ Ask the Question Thread
02-14-2014, 07:39 AM
Herp Derp Jerp
Join Date: Nov 2011
Location: Parham, ON
Posts: 18,251
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12 Posts
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.
02-14-2014, 08:00 AM
Senior Member
Join Date: Apr 2012
Location: Huntsville, Tn
Posts: 638
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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.
02-14-2014, 09:30 AM
CF Veteran
Join Date: Sep 2010
Location: Mercer County, NJ
Posts: 12,692
Likes: 0
Received 4 Likes
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4 Posts
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
02-14-2014, 09:52 AM
CF Veteran
Join Date: Aug 2011
Location: San Jose
Posts: 1,994
Likes: 0
Received 7 Likes
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7 Posts
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.
02-14-2014, 01:55 PM
Newbie
Join Date: Feb 2014
Posts: 6
Likes: 0
Received 0 Likes
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0 Posts
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.
02-14-2014, 03:25 PM
CF Veteran
Join Date: Aug 2011
Location: San Jose
Posts: 1,994
Likes: 0
Received 7 Likes
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7 Posts
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.
02-14-2014, 03:43 PM
Herp Derp Jerp
Join Date: Nov 2011
Location: Parham, ON
Posts: 18,251
Likes: 0
Received 13 Likes
on
12 Posts
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.
02-14-2014, 03:44 PM
Should I replace my rear brake cylinders before or after I flush the fluid?
