It is important to note, too, that the 4B11 offers a broader torque curve, producing a bit more torque than the 4G63 at all engine speeds, and also offering a torque MIT4D303. 4B12 Jan 24, 2011 · 4b12 vs g4kc engine In the earlier post, I think I had touch about the Theta II engine which is the joint project between Japan Mitsubishi and ...