I asked this before but it may have gotten lost in translation
Anyway there are two feats specifically for warforged that improve their damage when fighting unarmed.
One ( I can't remember the name ) i think its improved Natural Strike.
It ups the damage from 1d8 to 1d10
The next feat is one I do remember and I would love to have it added.
Battlefist -
Increases the damage of a warforged unarmed strike to 2d6
Battlefist (Eberron Campaign Setting) increases your damage as if you were one size larger. You have to be warforged or have the mighty arms graft (Faiths of Eberron) to use it.
That would be a formidible way to have warforged monks.
MT might have to step in and give some insight because I know there is a feat that does this.