snwboardxj
NAXJA Forum User
- Location
- Virginia
Hey guys,
This is my first post on the board, but I've been reading through the board since I first got my XJ, and there's a wealth of knowledge in here. I'm hoping you guys can help me clear up my confusion with rear pinion angle. I've got a '98 XJ and recently installed a 3.5" RE Super Flex lift kit, and since have had vibrations at lower rpm's, and a grinding noise when I let off the gas. Here are my measurements....
Rear Knuckle - 7.5 deg up
Rear of Rear Drive shaft - 18.5 deg up
Rear Working angle - 11 deg
Front Knuckle - 4.5 deg down
Front of Rear Drive shaft - 18.5 deg down
Front Working angle - 14 deg
Now from everything I could find within the board and online, I want my rear working angle to be about 0.5 degrees less than the front working angle, which would mean I need 2.5 deg axle shims. But then I've also read that I want the rear working angle to be as close to zero possible, which would mean....11 deg shims?!? I've read most people are using 4 deg shims with this set up, I'm thinking I need 2.5 deg shims, but if you guys could clear up the confusion, it'd be much appreciated!
This is my first post on the board, but I've been reading through the board since I first got my XJ, and there's a wealth of knowledge in here. I'm hoping you guys can help me clear up my confusion with rear pinion angle. I've got a '98 XJ and recently installed a 3.5" RE Super Flex lift kit, and since have had vibrations at lower rpm's, and a grinding noise when I let off the gas. Here are my measurements....
Rear Knuckle - 7.5 deg up
Rear of Rear Drive shaft - 18.5 deg up
Rear Working angle - 11 deg
Front Knuckle - 4.5 deg down
Front of Rear Drive shaft - 18.5 deg down
Front Working angle - 14 deg
Now from everything I could find within the board and online, I want my rear working angle to be about 0.5 degrees less than the front working angle, which would mean I need 2.5 deg axle shims. But then I've also read that I want the rear working angle to be as close to zero possible, which would mean....11 deg shims?!? I've read most people are using 4 deg shims with this set up, I'm thinking I need 2.5 deg shims, but if you guys could clear up the confusion, it'd be much appreciated!