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XJ Ask the Question Thread
#5102
Junior Member
Join Date: May 2011
Location: Martins Ferry, Oh
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Year: 1989
Model: Cherokee
Engine: L6, 4.0L (242 CID)
#5104
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Join Date: Dec 2010
Location: Missouri
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Year: 1998
Model: Cherokee
Engine: I6 4.0 L
Originally Posted by razor02097
The older 8.25's had a 27 spline but later 96 and all 97+ Cherokees had a 8.25 with 29 splines. The axles and carrier are beefier than the older 8.25
#5105
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Join Date: Jun 2010
Location: Ohio
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Year: 1998
Model: Cherokee
Engine: 4.0 stock
A 29 spline axle has more contact area than a 27 spline axle. The 29 spline axle has a bigger diameter than a 27 spline axle. The 29 spline carrier is physically different than the 27 spline carrier. You can upgrade a 27 spline housing to 29 spline as the tubes and diff is the same dimensions.
#5106
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Year: 1998
Model: Cherokee
Engine: I6 4.0 L
Originally Posted by razor02097
A 29 spline axle has more contact area than a 27 spline axle. The 29 spline axle has a bigger diameter than a 27 spline axle. The 29 spline carrier is physically different than the 27 spline carrier. You can upgrade a 27 spline housing to 29 spline as the tubes and diff is the same dimensions.
#5109
☠ CF Sheriff ☠
no, you won't have any problems. With no locker the 8.25 is good for up to 35" tires (debatable) if you don't go too crazy.
#5110
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Year: 1998
Model: Cherokee
Engine: I6 4.0 L
Originally Posted by dukie564
no, you won't have any problems. With no locker the 8.25 is good for up to 35" tires (debatable) if you don't go too crazy.
#5111
☠ CF Sheriff ☠
maybe a bit. You will have to account for the change in tire diameter when calculating your MPG though. Here's a good calculator for the effects of different tire sizes:
http://www.1010tires.com/TireSizeCal...?action=submit
http://www.1010tires.com/TireSizeCal...?action=submit
#5112
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Year: 1998
Model: Cherokee
Engine: I6 4.0 L
Originally Posted by dukie564
maybe a bit. You will have to account for the change in tire diameter when calculating your MPG though. Here's a good calculator for the effects of different tire sizes:
http://www.1010tires.com/TireSizeCal...?action=submit
http://www.1010tires.com/TireSizeCal...?action=submit
#5113
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Join Date: Jun 2010
Location: Ohio
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Year: 1998
Model: Cherokee
Engine: 4.0 stock
MPG will also appear to drop if the speedometer isn't calibrated for the larger tires. This is due to you going faster than the speedometer indicates which means it will turn the odometer slower.
#5114
Newbie
Join Date: May 2011
Location: Michigan
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Year: 1998
Model: Cherokee
Engine: 4.0
Transmission swap
What will the problems be if I want to take the automatic trans from a 94 Cherokee Sport and put it in a 91 YJ that is a 5 speed manual?
My biggest concern is how much of the electronic components will have to be changed.
My biggest concern is how much of the electronic components will have to be changed.