bump steer
02-18-2014, 08:58 AM
#1
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bump steer
Ok. Need some some assistance from the mechanically inclined! Have a 2011 jku with a teraflex 3" lift. Bilstein shocks. Just changed out the shocks for fox teraflex tuned set and upgraded the complete control arms from teraflex. Rides great etc but now i have bump steer! What gives? Did i blindly overlook something? Do i need a steering upgrade? Any help will be greatly appreciated! Thanks
02-18-2014, 09:02 AM
#2
JK Jedi
Your new shocks may have a higher pressure then the 5100's that may have raised your ride height enough for you to notice bump steer.
Bump steer is generally an indication that a steering upgrade may be needed.
Bump steer is generally an indication that a steering upgrade may be needed.
02-18-2014, 09:17 AM
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Thanks! I suspected this but wanted someone elses opinion that knew more than me ( very little here!) Thanks again.
02-18-2014, 09:50 AM
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Caster could be needing adjusting. Don't go replacing steering components until you figure out where you are with that.
If the shocks gave you are rise then the caster angle changed.
If the shocks gave you are rise then the caster angle changed.
02-18-2014, 10:34 AM
#5
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Ok. Need some some assistance from the mechanically inclined! Have a 2011 jku with a teraflex 3" lift. Bilstein shocks. Just changed out the shocks for fox teraflex tuned set and upgraded the complete control arms from teraflex. Rides great etc but now i have bump steer! What gives? Did i blindly overlook something? Do i need a steering upgrade? Any help will be greatly appreciated! Thanks
Bumpsteer is what happens when the drag ling and trackbar travel in different arcs because the mounting points don't run parallel.
Here is an sample diagram (not of a JK):
02-18-2014, 10:45 AM
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By bump steer- im refering to when i turn a corner ( somewhat tight corner) like parking and the steering wheel jerks if the corner is too tight compared to before the control arms were replaced and the fox shocks where put on. The shop said caster and pinion where dead on . Specs provided by teraflex that came with control arm kit. Drives great xcept the " bump steer" i apologize if that is not the correct term .
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02-18-2014, 10:55 AM
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Dirtman
Ran out and checked. Negative. Control arms are bent in towards driveshaft as per instructions. Tires would hit frame before the control arms. But was a good call enough to make me run out and check. Lol.
Ran out and checked. Negative. Control arms are bent in towards driveshaft as per instructions. Tires would hit frame before the control arms. But was a good call enough to make me run out and check. Lol.
02-18-2014, 10:57 AM
#9
JK Jedi
I would add to planmans diagram by stateing that your drag link and track bar should not only be parallel to each other but as parallel to the ground as possible to minimize bump steer caused by axle shift.