scroll down a little on this link for a common torque driver that many racers use. Has some info listed. The numbers were based on the older Short Stroke racing motors, the newer motors tend to vibrate a tad more, and we have increased the torque slightly.

http://www.darrolcady.com/Accessorie...ries_tools.htm

I have found, you can find a much better deal on a certified torque driver on that big auction site.