On 2005-11-30 23:44, cummins freak wrote:
you are putting more pressure on the "spring" forcing it to hold up the truck so the truck will not have as much give or travel
More pressure how, the truck still weighs the same; so there is the same amount of force on the torsion bar (other than the difference in the leverage caused by the angle difference of the lower A-arm from stock to cranked, which isn't much). By cranking up the torsion bar, you allow the bar to be twisted farther before you hit the bumpstop, so it would take more weight or a larger force to be able hit the bumpstop. But that doesn't mean the spring rate was increased, you just need to twist the bar more to bottom out.
You can't magically change spring rates. As you stretch/compress/twist a spring from its resting place, the further you go, the harder it becomes. Sit on your tailgate and the truck squats a little bit, put some more people on it and it squats more. Yeah everybody will agree with that... So if you put a 4" block on the rear axle, and you sit on your tailgate, will it still squat the same amount as it did without the 4" block?

oke:
By putting a spacer above the coil on a dodge increase the spring rate?! "No", you just moved the spring down. And once again it will just take more force to hit the bumpstop because you are going to compress the spring further than you would stock. But your factory spring characteristics remain the same.
The truck will have more compression travel, and less 'droop' from its setteled position.
That's my theory and I'm stickin to it!