You need to find the angle through a sweet. Using the upper ball joint not only you’re assuming the casing of the control And is 90 degrees flat but also assuming the upper control arm is facing directly into the lower. You have to measure the caster while doing sweep - turning outside and inside turn of 20 degrees
great video - what about the rear axle on a WJ ? once we set the lower arms to the desired distance how do we adjust the A adjustable arm>? according to what> Thanks!
@platonpanagopoulos73 To set the rear axle pinion angle you could use a similar setup to what you can see in this video. Level the Jeep with jack stands under both the front and rear axles. Measure the angle of the transfer case output. Measure the angle of the pinion (this is easier without the driveshaft installed. Disconnect the adjustable upper a-arm. Set the rear axle to match the angle of the transfer case. Adjust the a-arm until the holes align on the axle bracket and the male end on the a-arm. Reattach the a-arm. Tighten the jam nut. Recheck the angle and adjust if needed. put the Jeep back onto the ground and enjoy.
I started installing a lift kit on my jeep jk. 3.5 inch with adjustable control arms. Im just finishing the fronts. Do i focus on pinion angle first? To get it right? Or on caster angle? Also which arms do i adjust the top or bottoms first?
@mrcake4525 We do our best to tune the adjustable control arm lengths in our lift kits to give you a great starting point that balances pinion angle and caster. The great thing about your JK is the front driveshaft is pretty forgiving on pinion angle. If you'd like more caster, you would typically adjust the upper control arms to change it. We usually think of the lower control arms adjusting the axle position front to rear, and the upper arms tuning the pinion angle/caster angle.
I got you JEEP WJ 3" Benchmark Series Lift Kit and 1" trannsfercase drop. Set the front lower arms ar 6/16" longer, to get caster and avoid deadwobble. I got lot of noise from the front specirl after the 1" transfercase drop. Will it allways make lots off noise, when you raise it 3"? What will you suggest in caster/pinon angel?
Rather than getting perfect vehicle level couldn't you also just get angle from the flat on the front of the diff then subtract the difference to get a close enough caster measurement? The difference should be the same regardless of vehicle angle.
As long as you're finding a way to measure perpendicular to the axis running through the ball joints, you should be close enough for a home measurement. 🙂
Maybe close enough, but this method assumes that the axis of the ball joints is perfectly perpendicular to flat top of the "c". That is not necessarily going to be the case.
Yes, we agree .2 degrees is close enough to call accurate. This method has served us very well in initial suspension setup over the years. We have double checked countless Jeeps on an alignment rack afterwards with great results. It works amazingly well.
You need to find the angle through a sweet.
Using the upper ball joint not only you’re assuming the casing of the control
And is 90 degrees flat but also assuming the upper control arm is facing directly into the lower.
You have to measure the caster while doing sweep - turning outside and inside turn of 20 degrees
Did you watch to the end where we compare this method to the results of an alignment rack? 😁🤔
Bad English I don’t understand what he’s saying?
Sweet = sweep
Casing = Ball joint steel housing whatever
90 degrees thing = can't assume the Ball joint upper surface is true and flat.
great video - what about the rear axle on a WJ ? once we set the lower arms to the desired distance how do we adjust the A adjustable arm>? according to what> Thanks!
@platonpanagopoulos73 To set the rear axle pinion angle you could use a similar setup to what you can see in this video. Level the Jeep with jack stands under both the front and rear axles. Measure the angle of the transfer case output. Measure the angle of the pinion (this is easier without the driveshaft installed. Disconnect the adjustable upper a-arm. Set the rear axle to match the angle of the transfer case. Adjust the a-arm until the holes align on the axle bracket and the male end on the a-arm. Reattach the a-arm. Tighten the jam nut. Recheck the angle and adjust if needed. put the Jeep back onto the ground and enjoy.
@@IronRockOffRoad thanks !!! Legends !
I started installing a lift kit on my jeep jk. 3.5 inch with adjustable control arms. Im just finishing the fronts. Do i focus on pinion angle first? To get it right? Or on caster angle? Also which arms do i adjust the top or bottoms first?
@mrcake4525 We do our best to tune the adjustable control arm lengths in our lift kits to give you a great starting point that balances pinion angle and caster. The great thing about your JK is the front driveshaft is pretty forgiving on pinion angle. If you'd like more caster, you would typically adjust the upper control arms to change it. We usually think of the lower control arms adjusting the axle position front to rear, and the upper arms tuning the pinion angle/caster angle.
I got you JEEP WJ 3" Benchmark Series Lift Kit and 1" trannsfercase drop. Set the front lower arms ar 6/16" longer, to get caster and avoid deadwobble. I got lot of noise from the front specirl after the 1" transfercase drop. Will it allways make lots off noise, when you raise it 3"? What will you suggest in caster/pinon angel?
@aashoj We recommend adjusting caster as much as the driveshaft will allow without getting driveline vibrations.
Rather than getting perfect vehicle level couldn't you also just get angle from the flat on the front of the diff then subtract the difference to get a close enough caster measurement? The difference should be the same regardless of vehicle angle.
As long as you're finding a way to measure perpendicular to the axis running through the ball joints, you should be close enough for a home measurement. 🙂
Maybe close enough, but this method assumes that the axis of the ball joints is perfectly perpendicular to flat top of the "c". That is not necessarily going to be the case.
Yes, we agree .2 degrees is close enough to call accurate. This method has served us very well in initial suspension setup over the years. We have double checked countless Jeeps on an alignment rack afterwards with great results. It works amazingly well.
This would not work on my Dana 44. it has a 1.5 degree ball joint sleeve installed to correct the caster. @@IronRockOffRoad
@@CoroPlanesLLC An alternative to the upper ball joint measuring location would be the bottom of the lower part of your "c".
Why don't you just stick the angle finder on the hood of the car? Probably just as accurate
Did you watch to the end where we compare this method to the results of an alignment rack? 😁🤔