torsion bars???

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69fastbackfish

69fastbackfish

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what is the proper way to load torsion bars, and which end goes towards the front, the part number stamped end, or other end?
 
Are these new or used torsion bars?

If they are used, they have to go in the same way they were.

If they are new, you can put them either way you want.
 
It doesn't matter, new or used which end goes forward. Which side they go on does matter. You want to install them and put a load on them with the LCA pivot pin nuts loose (and the pins loose, too). Get the frames off the LCA bumpers and bounce the car. If there is still a gap at the LCA bumpers, tighten the pin nuts and adjust so that both sides have about an inch between the bumper and frame with both sides equal. Then align the car.

There has been an opinion for decades that you much leave the pin nuts loose until the ride height is set completely. This is not the case as the adjuster bolt moves the LCA away from the frame independently of the t-bar socket.
 
Jim Lusk said:
It doesn't matter, new or used which end goes forward. Which side they go on does matter.
Click to expand...

It does matter which end goes forward on used bars. If you put used ones on the same side as they were, and then switch the ends front to back, then you will be twisting the bar the opposite way. In theory, if it does not matter front to back, then it should not matter side to side.
 
An old school suspension tech will tell you that the majority of the bars were installed at the factory so that the L and R markings can be seen.
When you come across those that aren't in this position you can't know if they were installed different initially or if someone before you has had them out.
In any case. Mark them yourself before removing them.
Left and right reference marks on parts can make or break a suspension tech.
Bottom line, none of us can say for sure which way your torsion bars go in.
 
The twist does not change if you swap the front and back of the t-bar..........
 
The direction of the twist doesn't change but how the stress is distributed throughout the bar might change. Only a egg-head structural engineer with a slide rule would know for sure. :)
 
Bars have been swapped end to end, bars have been sold and reinstalled. Bars fail where there are nicks, grooves, or rust, NOT because the ends have been swapped.
 
I'm confused in how there is so much debate about something that has been in production and use for so long. How is this not an exact science by now??
 
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