[jakeru]

Torquing properly without getting a torque wrench onto a fastener is not a problem if you have a similar fastener you can get a torque wrench onto. Then after using the torque wrench, use a hand wrench on the torqued fastener to get a sense of how much force you need to press with your hand on the hand wrench to make the torqued fastener move (just a little bit), and immediately duplicate that force on your difficult-to-reach fastener.

As I recall, all the fasteners for the entire motor mount job called for the same torque setting so it's very easy to apply this technique to torque everything properly.