Cale, one "torque amplifier" you can find around the house is a cut piece of PVC pipe. Slide it over the wrench on the nut side for more leverage. The first time I used a vacuum cleaner extension tube. Mine was hard to "break" the first time. I use the Sears cheaper 1/2" torque wrench for checking that it is tightened back properly.
It's not hard to tighten something to 85Nm. Many service dealers actually over tighten them sometimes. The flex type torque wrench is not expensive, works, and is a great piece of mind.
