Shims for a small lift

FlexdXJ · Nov 14, 2009

Ok most of you know that my Jeep is small. I'm working on making it a little bigger. I was thinking of getting Shims for the rear along with new u-bolts. So what should I shoot for? I have the RE long AAL's (no t-case drop as I want to avoid it) so I was thinking probably 2.5* shims. would this be a good assumption? I have some vibes with them way its setuip now but they are not major.

kastein · Nov 14, 2009

Measure the angle of the shaft coming out of the transfer case, the driveshaft, and the angle of the pinion, all relative to the ground. With a regular 2-joint rear shaft, you want the pinion to point 1-3 degrees below being parallel with the transfer case output shaft (depending on who you ask); with a CV rear shaft, you want the pinion to point 1-3 degrees below being parallel with the driveshaft itself. All of this is measured at ride height - i.e. with the amount of weight in the vehicle that will be there when you drive it on-road. If you go to coil sprung rear suspension with control arms, links etc all bets are off (no spring wrap to worry about) - but by the time you're doing that, this advice shouldn't be needed

FlexdXJ · Nov 14, 2009

kastein said:
Measure the angle of the shaft coming out of the transfer case, the driveshaft, and the angle of the pinion, all relative to the ground. With a regular 2-joint rear shaft, you want the pinion to point 1-3 degrees below being parallel with the transfer case output shaft (depending on who you ask); with a CV rear shaft, you want the pinion to point 1-3 degrees below being parallel with the driveshaft itself. All of this is measured at ride height - i.e. with the amount of weight in the vehicle that will be there when you drive it on-road. If you go to coil sprung rear suspension with control arms, links etc all bets are off (no spring wrap to worry about) - but by the time you're doing that, this advice shouldn't be needed

This XJ will never see bigger than a 31-32. I would like to get an older one and go like 4 inches on 35's or something but Thats a ways down the road.

Shims for a small lift

FlexdXJ

NAXJA Forum User

kastein

NAXJA Member

FlexdXJ

NAXJA Forum User

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