Thanks heaps! That was very helpful. I'm fairly certain that my caster angles are different between sides. Got an awful pull to the left, ATM. Hope to correct it this afternoon using this video.
I have a 2003 grand cherokee laredo, with a 2.5 lift, stock driveshafts and control arms 98k miles and what should it be? I get a bad vibration at 60 and I'm looking into the driveshaft and peaked my interest because just last week i started hearing a ujoint click, if I'm on a flat surface doing 60-70 nothing, hit a bump i feel the vibration you get before death wobble occurs but it's not deathwobble.. when i coast from 70, the vibration gets worse as it slows down and goes away at 45, then back at 55 the vibration occurs, let the jeep sit and rest and the problem is gone.. i don't know what gives me more of a headache, my girlfriend or my jeep..
quite a good video pinion angle is a great way to describe castor their relationship to each makes castor understandable I could make a video to show should I
I went out and bought the plastic one to recheck my caster after a 3 1'2 lift......just to hard to read, IMHO buy the 30 dollar electric one and save your self some time and fustration
I just took mine to get a alignment after putting a new tie rod in. Their telling me my tires have a slight toe inward their saying it’s because I don’t have adjustable ball joints. But said mine are not worn out. I wanted to ask you before I went out a bought what they’re telling me is the problem
Hey bud, great video. I just install a 4.5 inch long arm on a 2001 xj. Stock Dana 30 and stock driveshaft. What should my caster be in relation to my pinion?
Been a while since I messed with XJs, but on a xj you’ll want the pinion angle to be pretty good with the driveshaft. So you’ll probably be around 3* and 3*
I installed teraflex tierod and draglink but seems like the draglink is longer cuz I can’t centered my steering thru the adjustment sleeve on the draglink to make the draglink shorter sleeve is max in. Do u know why is that?
Great video! What would you recommend for my setup. I am running 37's, RK adustable mid arms upper and lower, rock jock 44 , psc steering, lift is between 5 - 5 1/2, king coilovers. I look foward to your reply 🤙👍
Great video!! New to your channel. I have jk 2008 and 6 inch rough country lift. On 37s everything still stock. What would be my best angle for caster? And drive shaft angle?
HELP!! So I just bought a zj with stock axle in the front with a 4in rough country lift, but it’s got non adjustable upper a arms, the guy removed the front driveshaft for “vibration” if I get adjustable uppers in the front and set the arms should it fix this problem?
Yes! But depends on which way the axle needs to go, if the pinion needs to point up more then get uppers, if the pinion needs rotated down then get lowers
JK Gear and Gadgets Thanks so much for the quick reply! I definitely will go with the upper! One more quick question, is shims needed on the transfer case???
Yep. Front lowers will allow you to change your caster angles. Both uppers and lowers just give you more ability to move the axle. But lowers if anything
JK Gear and Gadgets so just adjust the lowers to the eye to eye length of what I have now and I will be fine... even tho I have relocation brackets I can’t measure it from the actual axle mount eye to frame mount. Thanks again for the help I’m lookin at rubicon express or some jks arms
It has been about a year since I started following you. I'm just going through your videos and I can't find one for your rock ram hydro assist. Did you make a video for that install? BTW great videos and content on all of them.
so is the 10 degrees fine for the caster? for the 0 pinion. ive read some other peoples posts, and they say pay a little more attention to pinion angle. and the caster will follow.
It all depends on your lift height and driveshaft type. You can’t have a 0* pinion angle on a tall lifted jeep otherwise you’ll get driveline vibrations. What axle you do have?
I know it's an old video but I can't find what my angle should be. I have a zj and added 3in lift, have front and rear adjustable top and bottom arms, if you still read comments can you help me out? Thanks
I'm checking my caster.It looks like Im at 10 degrees, from a local 4x4 shop that just set it up. It's wondering left to right going down the road. If I understand it right, I need 4-6 degrees? The math comes out, as I measure the pinion at 4 degrees. That puts me at a difference of 6 degrees on my Gladiator.
@@JKGearandGadgets sounds like I don't understand 6 degrees of separation yet. I can't be measuring correctly. I'm getting a caster measurement of 8-9, and a pinion of 1-2 degrees. Ill watch more videos to try and see what IM doing wrong.
Im running a 4.5in lift with fully adjustable control arms with adams front and rear drive shafts. should i be focused on dialing my caster back to 5 or 6 if it isn't? I had it adjusted a while ago, but I hadn't upgraded my rear ds at the time.
It’s a mix of caster and pinion angle, add as much caster as you can without getting pinion angle vibrations. With a 4.5” lift you will probably max out around 4-4.5* caster
Thanks, I have a 3.5 lift with front adj upper control arms. OEM Dana 30. I bought this tool and will check tomorrow. What would be ideal caster for me?
would you mind to help me out I have a wj jeep lifted 4'' with adjustable uppers and lowers can you tell me what i should be set at..I have the digital locator just like yours,,,do you recommend that tool or using the gauge thanks..factory axels
I'm running a 4.0 to 4.5 lift not 100% sure though. Dana 30 for now on 37s with rk adjustable arms upper and lowers what would u recommend I be at?? Thank you.
I'm running a 3" EVO lift with lower adj control arms. I put in the Adams 1310 driveshaft and just put new 37" Yokos which smoothed out the ride a lot! I am still getting a little bit of vibration. Not much, but I'm trying to dial it in. My CAs are as short as I can get them. My pinion angle is at 0. My caster is 6.5 degrees. My driveshaft is at about a 5 degree upward angle. Any thoughts on what I could do to eliminate the last of the vibration? I have the Steer Smarts Yeti track bar, draglink, and steering stabilizer.
Did the vibration start when you got the new shaft? If you are running the factory front axle then 6.5* caster is too much, actually puts your pinion angle at -.5*. Since your arms are as short as they can get then you can’t make any more pinion angle adjustments. My recommendations are this: remove shaft to verify you are getting a shaft related vibe, make sure the yokes to the axle and tcase are torqued to correct spec, get adjustable upper control arms and set them longer than stock in order to bring your pinion angle up untill the vibes stop, then play around to get a good caster/no vibe medium.
Yes that's when it started. One of my buddies recommended that I take the shaft off. I did, there was no vibration, so I'm sure that's what is causing it. I re-took measurements last night. My caster is actually 6 degrees, maybe leaning towards 5.5* and pinion is 0*. The angle on the TC is 0* as well, so the shaft should be turning at the same speed since the angles are even on both sides. When I had the shaft off, I re-torqued the large yoke nut, and the other four bolts. The rep from Adams mentioned I might have to get adjustable uppers.I was hoping to avoid that lol. I'm nitpicking here since the vibration is so minor, but I can feel it just a little right under my feet when I'm driving. I guess the next box to check is getting the upper CA's and see what happens. Thanks for replying so fast!
Yeah I would do the uppers, while the vibration might be minimal and not bother you too much, it can eventually lead to failure of your tcase output bearings.
Okay I just installed a pair of Rock Krawler adjustable uppers. The vibration is mostly gone! However, I am pulling to the left pretty bad now, so I took caster angle measurements and I'm at -4* on the drivers side and positive 3.5* on the passenger side. With the lowers it was pretty straight forward how to adjust. With the uppers, I'm not sure. I know it's damn near impossible without looking at it, but any ideas?
Hopefully you see this, Im having a tough time. I have RC 3.5” lift I just bought and installed RC lower adjustable control arms. Obviously experiencing death wobble. What should my caster and pinion angles be? Can I adjust when jeep has tires on and on ground? Or do I need have jeep on stands?
No, camber is the tire leaning in or out. Caster is what I said, the angle of the balljoints relating to steering. Centering the wheel in the wheel well has nothing to do with either caster or camber.
