84-85 Trucks & 4Runners 2nd gen pickups and 1st gen 4Runners with solid front axles

whats this do? - Torque Rod

Old Nov 2, 2010 | 03:22 PM
  #21  
GranVille-4crawler's Avatar
Thread Starter
Registered User
 
Joined: Mar 2010
Posts: 706
Likes: 2
From: charlotte nc and beaufort sc
Every time I see the letters TR all I can think of is texas ranger haha. So besides the brake lines stretching you haven't broken your j arm while under flex (as some stated this could happen). If I remove mine it would be only during the time i'd be wheelin it., reattatch when I'm hittin the road. Think that would cause any issues?
Reply
Old Nov 2, 2010 | 03:26 PM
  #22  
DeathCougar's Avatar
Donny, you're out of your element
20 Year Member
Liked
iTrader: (23)
 
Joined: Jan 2003
Posts: 17,692
Likes: 58
From: Marysville, WA
Originally Posted by XtraSlow_XtraCab
I can agree with DeathCougar's analysis and the physics behind what would make the TR useful, but how is it then that other leaf style front ends on other trucks do not have such a part?
See here:

Originally Posted by 4Crawler
Assuming you are referring to Toyota solid front axle trucks w/o the torque rod. The reason many don't is that they have crossover steering. Why does that matter? Simple, w/ stock (push-pull) steering, look at the torque rod and look at the steering drag link:



See how they are essentially parallel? That is no accident, in order to work right, the T/R and D/L must be lined up and it is the T/R that controls axle rolling forward and backwards and having that motion enter the steering.

With cross over steering, the drag link is parallel to the axle and thus having the axle roll back and forth has no impact on steering. So no need for the T/R, and in fact, the steering parts live when the T/R would have run, so it must be removed:

Ford, Chevy, Dodge, etc who used a SFA and leafs used crossover. Toyota used Push/pull for some god forsaken reason
Reply
Old Nov 2, 2010 | 07:08 PM
  #23  
peow130's Avatar
Registered User
 
Joined: Sep 2008
Posts: 3,887
Likes: 16
From: Spokane, WA
Not true.
&0's chevy trucks have push pull, and none of them have the torque rod mentioned here.
But i think i know why.
The 70's chevy trucks have a wider track width, longer leaves, and a wider frame.
So the longer leaves aliminate alot of the axle wrap, as well as the brake-steering.
Reply
Old Nov 3, 2010 | 06:12 AM
  #24  
GranVille-4crawler's Avatar
Thread Starter
Registered User
 
Joined: Mar 2010
Posts: 706
Likes: 2
From: charlotte nc and beaufort sc
Makes sense with the longer leafes, we were wondering about that with blaines gmc.
Reply
Old Nov 3, 2010 | 01:37 PM
  #25  
GranVille-4crawler's Avatar
Thread Starter
Registered User
 
Joined: Mar 2010
Posts: 706
Likes: 2
From: charlotte nc and beaufort sc
Still wondering if would be safe to take off for trail use only? Anyone personally have any problems on the trails with it removed?
Reply
Old Nov 3, 2010 | 01:50 PM
  #26  
4Crawler's Avatar
Contributing Member
20 Year Member
iTrader: (3)
 
Joined: Jun 2002
Posts: 10,822
Likes: 34
From: SF Bay Area, CA
Originally Posted by GranVille-4crawler
Still wondering if would be safe to take off for trail use only? Anyone personally have any problems on the trails with it removed?
Have done it and did see some increase in flex (with 3.5" lift springs). But do realize that now your drag link and steering J-arm will be the droop limiter for your axle, so steering arm breakage is more likely.
Reply
Old Nov 3, 2010 | 06:30 PM
  #27  
GranVille-4crawler's Avatar
Thread Starter
Registered User
 
Joined: Mar 2010
Posts: 706
Likes: 2
From: charlotte nc and beaufort sc
Any thoughts on fabbing up a beefier steering arm? I'm not too crazy about lifting my truck which is why I just want to get the most out of stock suspension.
Reply
Old Nov 3, 2010 | 06:45 PM
  #28  
minit's Avatar
Registered User
 
Joined: Nov 2010
Posts: 2
Likes: 0
I may not be completely right about this but if you have military wrap style leaf springs you can eliminate the torque rod. I think the extra wrap around on the eyelets eliminate the axle from moving back and forth under braking and bumps.
Reply
Old Nov 23, 2010 | 08:46 PM
  #29  
nothingbetter's Avatar
Registered User
 
Joined: Jul 2009
Posts: 727
Likes: 1
From: Rocky Mtn. House AB, Canada
well I learn't something tonight. I had always called these "torque bars" traction bars. And I was under the impression that they were purely for stopping axle wrap upon hard accelleration/braking and stopping wheel hop and thus preventing broken u-joint/driveshafts.

As for minit, What exactly do you mean by the axle moving back and forth? The extra wrap would help control the axle rotating due to more stiffness in the spring pack.
Reply
Old Nov 24, 2010 | 06:13 AM
  #30  
4Crawler's Avatar
Contributing Member
20 Year Member
iTrader: (3)
 
Joined: Jun 2002
Posts: 10,822
Likes: 34
From: SF Bay Area, CA
Originally Posted by minit
I may not be completely right about this but if you have military wrap style leaf springs you can eliminate the torque rod. I think the extra wrap around on the eyelets eliminate the axle from moving back and forth under braking and bumps.
Mil-wrap only comes into play if you break the main leaf, that that 2nd leaf wrapped around the spring eye helps to keep the axle located.

But a mil-wrap doesn't do a whole lot to control for spring wrap, especially under braking. And it is the axle rolling back and forth under the springs that is what the torque rod helps with.
Reply
Old Dec 2, 2010 | 06:22 PM
  #31  
94sasyota's Avatar
Registered User
 
Joined: Jan 2009
Posts: 129
Likes: 0
From: Mooresville NC
i would go with 5in shackles in the front and 5.5in in the rear. it will give you a little lift and a little more flex i had that on my truck when it was stock. i never took off the tq rod tho. if you plan on keeping stock leaf springs i have a nice set of rear springs that you could maybe try building a pack out of just a thought.
Reply
Old Dec 4, 2010 | 07:41 AM
  #32  
wannagetrdone's Avatar
Registered User
 
Joined: Oct 2009
Posts: 67
Likes: 0
if you lift your truck in anyway fashon or form it is advised to modify the torque rod accordingly. nwor sells a bracket that welds on that allow you to adjust it for the lift. most are correct in saying that it is to prevent axle roll and wrap under hard accel or braking. it is also used to minimize that hunting associated with uneaven road surfaces. most full size leaf vehicles dont have the same style steering as stock toyota. generally the pitman arms runs left to right and does not depend on ridigity to move the steering like the toyota. thats why when you change to crossover you dont need it. if you remove it in trail situation you eliminating a safety that protects the steering and most likely if you need what little flex that will allow you could have done it with it on there anyway. I have a straight axle truck. i have lifted it both ways one keeping the factory steering and lengthing the torque rod and draglink and the other w/crossover. crossover is by far the way to go. I got 6in of lift in the front and crossover fits great. just man up and do it.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
kawazx636
The Classifieds GraveYard
34
Oct 6, 2021 03:03 PM
ladybugRC
86-95 Trucks & 4Runners (Build-Up Section)
458
Aug 21, 2020 10:41 AM
primordialbeast117
86-95 Trucks & 4Runners
11
Dec 19, 2015 12:23 PM
83yotastockR
86-95 Trucks & 4Runners (Build-Up Section)
11
Nov 10, 2015 06:54 AM
Kamaloha
86-95 Trucks & 4Runners
1
Oct 16, 2015 05:13 PM


Thread Tools
Search this Thread

All times are GMT -8. The time now is 12:32 PM.