How to Adjust the Front Torsion Bar for Additional Height on a 1988 Toyota 4Runner

In its stock configuration, the 1988 Toyota 4Runner has very little height adjustment possible; you safely may raise it no more than 1 1/2 inches without adverse effects. When its lifted, you loose control arm travel. Anything higher causes multiple problems. The bump stops easily bottom out, it increases the driveshaft universal angle, substantially increases tire wear, as well as produces a harsh ride. The way to raise a Toyota 4Runner is to purchase a lift kit, which includes ball joint spacers, different torsion bars and rear springs.

Instructions

1

Roll under the truck and soak the torsion bar adjuster bolt and top two nuts with rust penetrating oil. Allow the bar to soak for one hour, then apply a second soaking. Allow this to work for a day or two. If you dont allow these bolts and their accompanying locknuts to free up first, the bolt or nut may strip.

2

Jack up the front of the truck with the floor jack, and place jack stands under the frame. Lower the truck so it rests on the stands. This takes all the weight off the torsion bars with the exception of the adjuster spring pressure.

3

Look at the top of the torsion bar adjustment housing and you will see where the adjusting bolt passes through and has a large nut with an additional locknut on top of it. Remove only this locknut using a combination wrench.

4

Measure from the bottom of the remaining nut to the top of the bolt threads. Make a note of this measurement should you want to return it to the normal position. Both sides must be the same measurement when adjusted to preserve the alignment and ride height.

5

Measure from the outside top of the wheel rim to the bottom of the fender well. Make a note of this measurement. It should be between 13 1/2 to 14 inches. This means that 15 1/2 inches is as far as the truck can be raised without difficulty.

6

Turn the adjusting bolt with a socket and ratchet, keeping track of the exact number of turns. Apply the same number of turns to the opposite side. Raise the truck in small increments and check both sides for height until the maximum or desired increase is achieved. Install the locknut on both sides and torque them to 61 foot-pounds using a torque wrench and crowfoot attachment.