torque wrench and piston question

Yea I agree also, that there are a lot of mistakes made when torquing fasteners and my biggest pet peave is technique. You don't use the torque wrench like a ordinary rachet. The wrench is only accurate if the operator is using a "slow progressively higher" pull to the point of the click and no further. You young wrenches will love this because it's a great way to build up your biceps but us old guys are sick of it because of the tendonitis that long term wrench pulling causes. I by the way show customers how to rebuild gas turbines, steam turbines and centrifugal gas compressor and you ain't seen nothing until you run a hydraulic torque wrench that'll take a big assed nut to 50,000 foot pounds. Thankfully stud torqueing has progressed from the middle ages so that today most of the large studs are actually stretched, to the proper dimension, using a hydraulic stud tensioner and then simply run the nut down by hand and release the hydraulic pressure. This device actually allows you to monitor and measure the stud stretch in thousands of an inch. Neat eh.