i have shackles for my 05 adrenaline but was told not
to use the torsion twist that it will cause too much stress on
the torsion bars?
but from what i read everyone seems to use the 2 inch twist
method, will this eventually break the bars or wear out other
parts?
thanks
It will ride more rough. A full 2" will leave very little down travel (or droop) in the front suspension, so the shocks will top out (extend all the way) very easily, causing the harsh ride. It will also put the CV joints at a higher angle, causing a bit more wear on them.
It would take a lot to break the bars, but it's possible. Increasing the pre-load to lift the front simply means that the torsion bar will twist much more when the front compresses all the way to the bump stop. That means more fatigue, the torsion bars will sag sooner, and it could (potentionally) break them if it twists more than it is designed to.
Still, a lot of people do it without major problems. I would not crank them for more than 1" of lift, personally. I measured how much downtravel my front end had from stock position, it was just over 2.5". If I raised the front 2", my front end would top out every time I drove over a drain almost.
I think that a lot of people measure 2" of lift from cranking, possibly after the front end has already settled a bit with mileage.
My suggestion is to measure the wheel-to-wheelwell height on both front wheels on level ground, write the numbers down. Place a hydraulic jack under the front subframe and raise the truck until the tires are both off the ground, and re-measure each wheel-to-wheelwell height. You can decide for yourself how much down travel is "enough" and tighten the bars until you're satisfied.
Do the adjustment with the weight off of the truck. Count how many turns you make on each side, lower the truck, and bounce it so it settles. Measure and repeat until you're satisfied.
Don't forget to check the alignment when you're done.
What shackles do you have? The warrior shackles will lift 1.5", for reference.
