^Mueller, Thomas. Is SpaceX's Merlin 1D's thrust-to-weight ratio of 150+ believable?. June 8, 2015 [July 9, 2015]. The Merlin 1D weighs 1030 pounds, including the hydraulic steering (TVC) actuators. It makes 162,500 pounds of thrust in vacuum. that is nearly 158 thrust/weight. The new full thrust variant weighs the same and makes about 185,500 lbs force in vacuum.