Torque wrenches

[scratch]

But, what if you are looking for break-away torque?

For instance, the break-away torque of my cylinder head nuts is over 75ft-lbs (as my break-away clicker-type torque wrench only goes up to 75ft-lbs).

[MarkusN]

Also my wrench only has Meter Kilograms and Foot-Pounds......Haynes lists rear axle torque as 60N. A Newton is 1 kg * m^2..... Did they mislabel my wrench? Why then does the Meter Kilograms only go up to 20. like 20 Meter Kilograms is equal to 140 Foot-Pounds on the scale...HELP...ANYONE?!

Using kg as a force unit is not admissible from a physicists POV, but it's done all the time. It's meant to be equal to the weigt of 1 kg of mass. Thus equal to 9.81 N, or roughly 10 N. Just shift the decimal point on your Wrench over to the right by one digit and you have Nm.

(and one N actually is 1 kg m / s^2, the force that accelerates 1 kg with an acceleration of 1 m/s^2. g, acceleration of earth's gravity, is 9.81 m/s^2; that's where the above conversion factor comes from.)

[EDub]

i found a nice pro-am clicker wrench at napa for around 30 dollars if you decide to go that route

[Suzuk-E]

Nice. I'm shopping for a torque wrench tomorrow. Good info in these old threads. 

hmm, whats the book says "Nm". How's that convert to pounds.

[sledge]

To convert Nm to lb/ft, multiply the figure by 0.7376
To convert lb/ft to Nm, multiply the figure by 1.3558.

Or you can use an on-line calculator like this one......
http://www.convert-me.com/en/convert/torque