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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

How do I know if the torsion bars are turned up?

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Old Apr 13, 2018 | 09:22 AM
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From: NNJ
How do I know if the torsion bars are turned up?

Bought a 92 pickup a few months ago and noticed the upper A-arms are resting pretty heavy on the cracked bump stops. Truck does look higher than stock but really hard to tell with the small tires & does ride pretty hard. It has 28" tires (235/75/15) on 7" wide wheels and measurement from floor to middle of fender is 36.75". Thanks!

Last edited by Paul22RE; Apr 13, 2018 at 09:38 AM.
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Old Apr 13, 2018 | 12:02 PM
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Also compare distance from lip of 15-inch rim to lip of wheel-well with others. This will be independent of tire size.
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Old Apr 13, 2018 | 01:19 PM
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From: NNJ
Originally Posted by RAD4Runner
Also compare distance from lip of 15-inch rim to lip of wheel-well with others. This will be independent of tire size.
That measurement is about 15", rear is about 14.75". I turned the bolts 3 full turns each and now front is 14.75". Do you know what that measurement is supposed to be out of the factory?
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Old Apr 17, 2018 | 03:50 PM
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From: SD Cali
You can look under the truck and see how far the threads are sticking out of the top for your torsion adjustment.
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Old Apr 17, 2018 | 04:08 PM
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From: NNJ
Originally Posted by -Loki-
You can look under the truck and see how far the threads are sticking out of the top for your torsion adjustment.
Are the upper A-arms supposed to be resting so hard on the bump stop that that are halfway compressed (and cracked)?
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Old Apr 17, 2018 | 05:09 PM
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Originally Posted by Paul22RE
That measurement is about 15", rear is about 14.75". I turned the bolts 3 full turns each and now front is 14.75". Do you know what that measurement is supposed to be out of the factory?
Need to compare measurement above with other members who have stock same year-model trucks.

Last edited by RAD4Runner; Apr 17, 2018 at 11:38 PM.
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Old Apr 17, 2018 | 06:56 PM
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On a stock truck your control arms are going to be close to level with the ground. The more downward they point the more the bars have been cranked.
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Old Apr 23, 2018 | 01:19 PM
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The attached file from the FSM shows the official factory way to measure suspension height. This is independent of tire size, inflation, sagging body mounts, bent fenders with missing trim, etc.
Attached Files

Last edited by RJR; Apr 23, 2018 at 01:22 PM.
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