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Old 02-02-2011
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Quick question on torsion bars

I have a 2000 Ranger with 112,000 miles. My truck has OEM # 1 bars that have never been cranked.

My question is, should I get new # 1 bars because that's to many miles on the stock torsion bars regardless if they've never been cranked. OR, the stock # 1 bars are fine if they have never been cranked.
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Old 02-02-2011
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I would give them a shot first, cranking them i mean... worst case they will just sag, then if thats the case you can find some new ones..
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Old 02-02-2011
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crank them on up
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Old 02-02-2011
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Do you need an alignment after cranking?
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Old 02-02-2011
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depends how much you crank them
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Old 02-02-2011
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So, as the bars begin to sag then you need then you need to keep re-aligning?
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Old 02-02-2011
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or keep cranking back to the ride-height where you had the alignment done ...

Measure the height between the LCA Pivot bolt and the edge of the steering knuckle <-- that'll get you to a good measurement of the angle on the LCA which directly relates to the opreating angle of the LCA as a result of the torsion bar loading.

If you think you've sagged, go back and re-check that height difference (reseting that value to where you were aligned should get you happy again -- of course, you've prolly knocked the alignment out on something else, but it'll addess the 'sag' portion ...
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Old 02-02-2011
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Sticky: torsion bar cranking lots of information on tbar cranking can be found here
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Old 02-02-2011
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Quote:
Originally Posted by satan View Post
or keep cranking back to the ride-height where you had the alignment done ...

Measure the height between the LCA Pivot bolt and the edge of the steering knuckle <-- that'll get you to a good measurement of the angle on the LCA which directly relates to the opreating angle of the LCA as a result of the torsion bar loading.

If you think you've sagged, go back and re-check that height difference (reseting that value to where you were aligned should get you happy again -- of course, you've prolly knocked the alignment out on something else, but it'll addess the 'sag' portion ...
how do you suppose he will be able to keep cranking the torsion bars up everytime they sag? the bar itself sags...not the bolts loosening off. there may not be any adjustment left
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Old 02-03-2011
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Originally Posted by ranger4.0 View Post
how do you suppose he will be able to keep cranking the torsion bars up everytime they sag? the bar itself sags...not the bolts loosening off. there may not be any adjustment left
Tightening the bolt adds torsion, restoring the torsion it had 60k miles ago
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