Adding More Torque

Is there no way that this can be done?

If there is no way this can be done, can I somehow fake it. If I use addForce it produces a unrealistic effect, I don't know what to do.

Is it really necessary to use physics? Otherwise I could give you some pseudo-code on how to write your own rotation code.

That way you have full control over the rotation and its speed.

I want the character to be completely physics based along with most other things in the game.

torque needs to build up to work, one instance for one frame only won't 'twist' the character. in a new scene, create a cube with rigidbody and mass 1. add the following script to the cube. then create another larger cube for the floor, add rigidbody and set to is kinematic - true :

 public var turnForce : float = 1000.0;
 private var moveX : float = 0.0;
 
 function FixedUpdate() 
 {    
     moveX = Input.GetAxis ("Horizontal");
     rigidbody.AddTorque( Vector3.up * moveX * turnForce * Time.deltaTime );
 }