I don't think it's possible to scale the brickSIDE texture on a model without it losing quality, the bricks have a special way of using it so that it doesn't blur when stretched to fit the brick
I know the Source engine has a thing like that where you can set a texture's Point Sample flag to make it pixelate instead of blur, people tend to use that flag for Minecraft textures and it works pretty well, but obviously Torque doesn't have such a feature, not even Milkshape 3D has such options in the DTS Plus exporter