Interference between torsion bar & tie rod end link
#830483
10/15/10 03:19 PM
10/15/10 03:19 PM
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Joined: Feb 2003
Posts: 1,142 Tucson, AZ
cruzin
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super stock
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OP
super stock
Joined: Feb 2003
Posts: 1,142
Tucson, AZ
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What’s my problem??? I reassembled my ’73 Challenger (which included removing the torsion bars) front end suspension and notice that the driver’s side tie rod end link that connects to center link, contacts the torsion bar when I turn the steering wheel.
As you can see from the picture, the top of the end link and the pitman arms are in line with the lower portion of the driver’s side torsion bar. Consequently when the steering wheel is turned to the right they contact one another. I have not placed the wheels on the car and dropped it on the ground however, I don’t recall experiencing this interference problem when I have previously performed K-member removal and front end reassemblies. I did place a jack underneath the lower control arm and loaded the front driver side which did not appear to alleviate this interference. The car is not aligned or ride height set. The passenger side does not have any interference with the torsion bar when rotating the steering wheel.
Initially I thought the pitman arm was incorrect which may have placed the centerlink in an incorrect position. However, I eliminated that the pitman arm is incorrect. I double checked and the torsion bar are correct for each side; driver’s side (left), passenger side (right). The centerlink is not backwards or flipped over either. Everything was bolted up and initially I did not notice the interference since I had everything pointed straight. I did replace the steering box with a Firm Feel however, they assured me that it’s not the issue and comparing it to another ’73 Challenger, the pitman arm’s drop appears to be in the correct position. I double checked the outside tie rods and they are correctly orientated on the lower ball joint. At this point, I’m lost what else it can be. The only other thing I’m thinking is could I have clocked the torsion bar into the lower control arm at an incorrect position when reassembled them and would that have any affect?
Any ideas???
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Re: Interference between torsion bar & tie rod end link
[Re: cruzin]
#830485
10/15/10 03:55 PM
10/15/10 03:55 PM
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Joined: Dec 2006
Posts: 3,533 Indiana
Fury Fan
master
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master
Joined: Dec 2006
Posts: 3,533
Indiana
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Quote:
... I have not placed the wheels on the car and dropped it on the ground however, I don’t recall experiencing this interference problem when I have previously performed K-member removal and front end reassemblies. I did place a jack underneath the lower control arm and loaded the front driver side which did not appear to alleviate this interference. The car is not aligned or ride height set. ... The only other thing I’m thinking is could I have clocked the torsion bar into the lower control arm at an incorrect position when reassembled them and would that have any affect?
I'd recommend putting wheels on and putting the car on teh ground and set it at a reasonable approximate ride height via a floor jack and see how things look. (probably won't change the results, though, unless you didn't get the LCA in the right attitude earlier when you were evaluating it with the jack).
The T-bar rides in the pivot for the LCA, so if you had the bar clocked/reversed, etc, that would show up in suspension behavior, not in the geometry regarding the tierods. the T-bar woudl either not hold the vehicle up or if it was clocked incorrectly you would not be able to set ride height within the range of the adjuster bolt.
So unless your frame, K-member, structure, etc is tweaked, I would look at steering component geometry again.
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Re: Interference between torsion bar & tie rod end link
[Re: cruzin]
#830488
10/15/10 05:43 PM
10/15/10 05:43 PM
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Joined: Jan 2003
Posts: 74,962 U.S.S.A.
JohnRR
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Quote:
I believe so. As I recall the steering box mounting holes are fixed and do not provide for movement/adjustment. I think there are three stout bolts which affix the steering box to the K-member.
The shank of the gear box, where the pitman arm attaches appears to be in the proper location when I compared this to another '73 Challenger.
When I say centered did you spin it thru it full range of motion and get it in the middle of turns lock to lock ?
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Re: Interference between torsion bar & tie rod end link
[Re: chache876]
#830493
10/15/10 08:41 PM
10/15/10 08:41 PM
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Joined: Sep 2004
Posts: 654 MN
astrobuf
mopar
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mopar
Joined: Sep 2004
Posts: 654
MN
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I think you have the tie rod end in backwards. The inner and outer tie rod ends are different. The stud length is longer on the outer end if memory serves. I just did this on my '71 Challenger and put them in backwards myself. Pull the rod end-sleeve assy out and swap end for end.
I suspect if you look closely, the present inner tie rod end castelated nut is way down on the stud and the cotter key is not closely engaged either.
Astrobuf
So, are you really a Rocket Scientist?
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Re: Interference between torsion bar & tie rod end link
[Re: astrobuf]
#830499
10/15/10 09:55 PM
10/15/10 09:55 PM
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Joined: Feb 2003
Posts: 1,142 Tucson, AZ
cruzin
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super stock
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OP
super stock
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Tucson, AZ
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The tie rod ends are different. The difference is right hand and left hand threads used to adjust tie rod. The the size of the tie rod end links do not appear any different in size.
I've considered the idler arm and thought about how that may alter the pitman arm's geomerty if it is the wrong one. Will have to investigate further. I was able to compare the centerlink and initially thought it may have been reversed however, that wasn't the case.
Last edited by cruzin; 10/15/10 10:02 PM.
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Re: Interference between torsion bar & tie rod end link
[Re: autoxcuda]
#830503
10/15/10 10:38 PM
10/15/10 10:38 PM
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Joined: Jan 2003
Posts: 4,711 Moved to N.E. Tennessee
GomangoCuda
master
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master
Joined: Jan 2003
Posts: 4,711
Moved to N.E. Tennessee
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I had to shim the steering box to get everything where it belonged. The MP Chassis manual explains how and why. My driver side inner tierod end was hitting the torsion bar and the centerlink was rubbing the oilpan. Bumpsteer was real bad. Everything is fine now.
Last edited by GomangoCuda; 10/15/10 10:39 PM.
In theory, there is no difference between theory and practice. In practice, there is.
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Re: Interference between torsion bar & tie rod end link
[Re: cruzin]
#830505
10/15/10 11:27 PM
10/15/10 11:27 PM
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Joined: Jan 2003
Posts: 27,453 So Cal
autoxcuda
Too Many Posts
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Too Many Posts
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So Cal
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Quote:
GomangoCuda,
I hadn't consider this!!! I'm trying to think if the original box was shimmed when I removed it. If so, would it have been shimmed with those square-ish looking horse-shoe shaped shims? I sort of recall seeing these now that I'm thinking about this.
Yes they would have been horse shaped shims typically.
A car with stock parts shouldn't need those. I wonder if something is bent somewhere?
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Re: Interference between torsion bar & tie rod end link
[Re: BDW]
#830508
10/16/10 11:19 AM
10/16/10 11:19 AM
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Joined: Jan 2003
Posts: 27,453 So Cal
autoxcuda
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So Cal
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Quote:
Wouldn't a shim move the box up? Making the problem worse?
If you just shim the top bolts and not the bottom ones the box tilts down.
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Re: Interference between torsion bar & tie rod end link
[Re: cruzin]
#830510
10/16/10 07:33 PM
10/16/10 07:33 PM
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Joined: Jan 2003
Posts: 28,067 Irving, TX
feets
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Senior Management
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Irving, TX
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Is the center link horizontal? If not, either the pitman arm or idler arm are incorrect. They should be at the same distance off the ground. That means they should be the same height from the frame rails too.
JohnRR referred to this but in an odd manner. The idler arm and pitman arm do not set ride height. However, they are the points that are supposed to be measured to set the ride height.
My money is on the center link being installed backwards or upside down.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: Interference between torsion bar & tie rod end link
[Re: cruzin]
#830512
10/16/10 11:05 PM
10/16/10 11:05 PM
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Joined: Jan 2003
Posts: 28,067 Irving, TX
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Senior Management
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Irving, TX
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I'm running a 69 B-body k frame in the hot rod. My pitman arm is about an inch below the torsion bar. The tie rod actually sits below the T-bar with the wheels centered. That's pretty far off from where you're at.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: Interference between torsion bar & tie rod end link
[Re: cruzin]
#830513
10/16/10 11:12 PM
10/16/10 11:12 PM
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Joined: Dec 2007
Posts: 18,157 Mass
DAYCLONA
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I Live Here
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Mass
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Cruzin,
From your photo it appears you have the wrong end of the centerlink assembled, it appears that you have the idler arm end assembled to the pitman arm end,....the pitman arm end should be angled rearward, and have a slight forward pitch looking from the rear,...the idler arm end is somewhat straight,....as I'm sure your aware there is no way to install the centerlink upside down, because of the joints taper,....but it's easy to swap the wrong end,...a photo taken looking straight up at the centerlink would confirm,.....
Mike
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Re: Interference between torsion bar & tie rod end link
[Re: BigTerry]
#830514
10/17/10 11:49 AM
10/17/10 11:49 AM
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Joined: Jan 2003
Posts: 74,962 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
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U.S.S.A.
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Quote:
shouldn't the hole the tierod end go into be chamfer??
Yes so there is no way it would be upside down unless he has the wrong pitman arm.
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Update.. Interference between torsion bar & tie rod end
[Re: JohnRR]
#830515
10/18/10 03:25 PM
10/18/10 03:25 PM
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Joined: Feb 2003
Posts: 1,142 Tucson, AZ
cruzin
OP
super stock
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OP
super stock
Joined: Feb 2003
Posts: 1,142
Tucson, AZ
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** Update ** Over the weekend it appears that I got this problem squared away. I wish the problem was as simple as having the center link reversed or flipped or a bent part, as some had suggested. However, that was not the case.
What I did was obtain another new pitman arm (third one) and replaced it. Also, I shimmed the top bolt on the new steering box. Not sure if the shim was necessary however, it appeared to add a slight amount of clearance and it doesn't seem to affect anything so I left it in when I re-torque the steering box. The new pitman arm was Moog same as the prior two, new ones. Comparing them side by side, and taking some measurements with a caliper, I could not find any significant difference. Apparently, Moog sources these parts from other vendors since none of them had an actual Moog part # as far as I could tell. All I can say is upon reassembling and torquing everything back up, wall'la no more interference!
Anyway, thank s for everyone's help and suggestions.
Last edited by cruzin; 10/18/10 03:28 PM.
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