RB20/25/30's crank bolt is torqued to 142 - 152Nm. Most torque wrenches will do that, so there is no excuse for not torquing the crank bolt on those engines.
RB26, different story, 446 - 466Nm to torque that sucker. Only proper way to do it would be to have it in the car (Engine stand will move far too much applying that torque), sump off, nice stopper between the crank wall and the crank and use a 1" torque wrench capable of that torque. Might have to pay someone like a truck tyre shop to borrow a wrench that big for a day.