In the instructions that came with the t-bars, it says "tighten the torque arm bolts to factory specfications."

I don't want to seem :bloated: but I gotta ask, what exactly is factory spec, how is it measured?

Someone with the factory manual can tell you what the specs are. All you need to do is return the height of the frame or a-arm (whichever you measured) to the height it was before you replaced the torsion bars.

This should require less turns on the torsion bars since you have a stronger bar that is less resistant to twisting.

The factory specs are measured in the height of the shortest side of the triangle created by your a-arm.

Unfortunatly I formatted my hard drive and lost the factory specs for this distance. OffroadX might have them for you.

I doubt this is quite what you need since you have stiffer bars, but here's what the factory spec sez:

The bottom of the anchor should hang 25-39 mm (V6) or 6-18 mm (I-4) below the bottom of the crossmember before you begin tightening.
Tighten until the distance from the tip (threaded end) of the bolt to the bottom of the adjusting nut (bottom of the two) is 70 mm (V6) or 54 mm (I-4).
Bounce the vehicle to settle the suspension. Then measure the height to the center of the front pivot for the lower arm, and the height to the bottom of the steering stop bracket, and subtract. The difference (for V6) should be 45.5 - 49.5 mm (4WD) and 37.7 - 41.7 mm (2WD). Bounce again and re-check, then adjust if necessary.

Brent

Originally posted by OffroadX


Bounce the vehicle to settle the suspension. Then measure the height to the center of the front pivot for the lower arm, and the height to the bottom of the steering stop bracket, and subtract. The difference (for V6) should be 45.5 - 49.5 mm (4WD) and 37.7 - 41.7 mm (2WD). Bounce again and re-check, then adjust if necessary.

Brent

Thanks Brent. This is the "factory spec" you're looking for Aquamander, as it's the tolerances that Nissan designed the A-arm to be within, and would be independent of the stiffness of your torsion bars.

When you hear people that have gone to Nissan, and the service department says they adjusted their torsion bars "out of spec", they're using this distance to gauge that.

Thanks Brent, that's exactly what I wanted to know. This will give me a range to shoot for when I start the adjustment phase. Since the new bars will be stiffer, I'll be interested to see how far out of spec I'll be after adjusting everything. I can print this off and put it on my trusty old clipboard with Schlud's install instructions! If I see anything that I can add-lib to, I'll get some notes and pics.