4.7L Powertech V8 l Iron Rock Offroad 3" Suspension Lift l Bilstein 5125 Shocks l Bilstein 5100 Steering Stabilizer l 17x8 Unique Steel Wheels l LT255/75R17 BFGoodrich Mud Terrain KM l Kevins Offroad Transfer Case Skid l Kevins Offroad Roof Rack Tire Carrier l Hella 500 Black Magic
You've got one impressive WJ there! I am amazed at how clean it is, I really like it! Great combo too, v8 with the 242!
I have to ask as to why you are running such little caster?
Thank you so much!
After lifting the Jeep, I was having problems with steering shimmy. I went over absolutely everything in the front end, pretty much replaced everything and came to the conclusion my caster needed to be adjusted. At that time I was running a Rough Country lift with fixed LCA's. I got rid of all the Rough Country stuff and converted to Iron Rock. Took the Jeep to the shop after I installed all adjustable control arms and had them adjust the caster. Turns out the shop I went to doesn't see too many modified Jeeps and didn't really know what they were doing. They said 3.8 degrees was the best they could get with the drive line angles. Didn't make much sense to me, but helped immensely with steering shimmy and bump steer. I still think it's too low though and they were too lazy to keep adjusting until I had the right angles and as much caster as I could have.
Needless to say after everything gets put back together, I will be bringing it to a known 4WD shop here in Jersey to get it's alignment.
For comparison I was at about ~3 inches of lift and had about 4.2* caster with stock control arms and it had some shimmy on a certain bump and some weird shimmy just because at 55mph on occasion. I increased caster to 6.7* with IRO LCA's and that made driving around town and return to center a lot nicer, along with a better tracking on the the highway. I am running ~6.7* caster now and ~3 in of lift and don't really have any vibes from the front shaft. I do still have some shimmy on the highway but that is probably because of my tires... that is another story though. But, that is so odd that 3.8* was the best that they could do, you should be able to get more caster out of it.
I wonder what caster you were at before the IRO arms, that would interesting to know. I find it impressive that you are able to run that little caster without any issues. Maybe those RC arms just had you at a ridiculously low amount of caster.
~ 04 WJ 4.0 | Selec-Trac 242 | MBP | OME HD 3" Lift | JKS TB | IRO Front LCA's and UCA's| Bilstein 5100's | Custom Front D.S. | Stillen Rotors/Metal Matrix Pads | Tow Package w/ 3.73's | Projectors w/ 55w HID H1 5000K Lows | Sylvania Ultra 9005 Fogs | Moog HD Steering | Kenwood eXcelon Radio | Memphis Speakers | Alpine Amps | Alpine Subs | Moog STB SS | Superchips Flashpaq | Auxiliary Transmission Cooler | Rock Lights | Light Bars ~
Having the caster set this low definitely makes it hard to keep the Jeep straight, especially at highway speeds. I'm hoping they can set the caster as close to stock as possible with no shimmy! We'll see.....