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adjustable tack bar vs drop pitman

3K views 18 replies 11 participants last post by  Triple88a 
#1 ·
ive heard some talk about these two, whenever i decide to lift my tj, which should i go with, ive seen more say to toss the pitman and get a track bar
 
#2 ·
both.

track bar doesnt correct your steering geometry, but it does locate your axle side to side. (when you lift your jeep, your axle gets pulled to the drivers side slightly, a longer tracbar fixes this).

the drop pitman arm does fix your steering geometry, which is also needed. if you put on a drop pitman arm, the factory steering geometry is kept.

but it is ALWAYS best to do both at the same time. if your trac-bar and draglink are not parallel, you WILL get bumpsteer to some extent .... how bad it will be depends on the difference in angle

do both

you can skimp on seats, paint, mirrors, fuzzy dice, etc. but NEVER skinp on steering, suspension, brakes, and rollcages ... among other things that could save / endanger you or someone else
 
#4 ·
you can skimp on seats, paint, mirrors, fuzzy dice, etc. but
yea, who needs suspension seats when you got good milkcrates :D and fuzzy dice, well, theyre good firestarters i suppose
 
#5 ·
the drop pitman arm does fix your steering geometry, which is also needed. if you put on a drop pitman arm, the factory steering geometry is kept.
If you install a dropped Pitman arm onto a TJ with otherwise stock steering components or a non-dropped upper trackbar mount, you WILL get bumpsteer.

Installing a dropped Pitman arm on a TJ with anything less than at least 6" of lift is guaranteed to screw up the geometry and cause bumpsteer.

While a dropped Pitman arm was required for the older steering geometry used in both the CJ and YJ after installing nearly any suspension lift, the TJ's inverted-Y steering system has a newer improved steering design. The trackbar and draglink remain parallel to at least the 6" suspension lift height and dropping the upper part of the draglink via a dropped Pitman arm will just remove that required parallel relationship.

So unless you have a monster lift and/or you have installed some kind of trackbar that uses a dropped upper mounting point like the Rubicon Express 1610, avoid installing a dropped Pitman arm or it's guaranteed you will then quickly learn what the symptoms of bumpsteer are. :)
 
#7 ·
What Jerry said. I always went by the 6" rule too. If less than 6", the drop pitman causes more problems than it solves. The trackbar will be most noticeable/effective in lifts 3" or over. For under 3" the drop pitman is not needed and the adj trackbar is not a necessary, but a nice to have.

Over 3", the adj trackbar becomes more necessary as the axle shift to the side becomes greater. The drop pitman is not needed until 6".

YMMV.
 
#10 ·
What Jerry said.
 
#12 ·
For a 4" lift use a drop pitman off of a Cherokee. It drops it enough to correct steering geometry but the often included drop pitman for a 4" lift is too much.

As for causing problems....??? That makes no sense. When all of the componenets are lined up properly the gearbox and powersteering pump does not have to fight poor alignment/binding in the steering geometry.

The other reason for NOT leaving a stock pitman all the way up to a six inch lift is the bind that happens at the pitman arm when articulated.
 
#18 · (Edited)
give me a symptom of bump steer..

I have 4" of lift and a DPA... I re drilled my tracbar 3/4" over on the axle end..

1) where exactly am I supposed to have bump steer? on the freeway @65mph ? or on the trail at minus 10mph?

2) how am I supposed to know I'm having bump steer caused by my DPA ?

keep in mind the lift has been on my DD for 16 months and If I've had bump steer all this time I must be living with it.. or not know what it feels like, or the DPA has not caused it with my 4'' lift.

PS> this lift is on my 2001 TJ sport with 44K on the ticker
 
#19 ·
Vector i'm still stock but bump steer is preatty much you are driving on road or whatever with 30 some mph or above and you hit a bump and your truck steers.. i'm guessing if you put a lift on and dont put the DPA it will steer one way usually but if you dont put lift on and still install a DPA it will steer the other way. As easy as it sounds its all geometry. Preatty much everything has to be parallel.

On trail i dont think it will be any different from the next big rock you come up to.
 
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