wwood
Member
I have a 2013 JK 4 door with a factory drive shaft running EVO 3" plush rides.
What is the correct angle for the rear pinion?
Should the pinion center line be parallel to the transfer case center line (basically parallel to the ground) as in the first pic below
or should it point up directly in line with the drive shaft as in the second pic?
I cannot find a definitive answer. Look at this article written by Tom Woods, a driveline maker.
http://www.quadratec.com/jeep_knowledgebase/article-3.htm
The article indicates that the rear pinion center line should be parallel to the transfer case center line in a conventional 2 U-joint drive shaft configuration (first pic). But the JK factory rear shafts are not conventional 2 U-joint shafts, there are CV joints at both ends of the factory shaft. The article goes on to say that the pinion should point up directly in line with the drive shaft if there is a CV joint (double cardan in Woods example) at the transfer case and a U-joint at the pinion (second pic).
But again, the JK factory rear drive shaft has CV joints (Rzeppa) at both ends, not a CV at the transfer case and standard U-joint at the pinion as in Woods example.
So, what is the proper pinion angle if running a JK factory rear drive shaft?
Thanks
What is the correct angle for the rear pinion?
Should the pinion center line be parallel to the transfer case center line (basically parallel to the ground) as in the first pic below
or should it point up directly in line with the drive shaft as in the second pic?
I cannot find a definitive answer. Look at this article written by Tom Woods, a driveline maker.
http://www.quadratec.com/jeep_knowledgebase/article-3.htm
The article indicates that the rear pinion center line should be parallel to the transfer case center line in a conventional 2 U-joint drive shaft configuration (first pic). But the JK factory rear shafts are not conventional 2 U-joint shafts, there are CV joints at both ends of the factory shaft. The article goes on to say that the pinion should point up directly in line with the drive shaft if there is a CV joint (double cardan in Woods example) at the transfer case and a U-joint at the pinion (second pic).
But again, the JK factory rear drive shaft has CV joints (Rzeppa) at both ends, not a CV at the transfer case and standard U-joint at the pinion as in Woods example.
So, what is the proper pinion angle if running a JK factory rear drive shaft?
Thanks
