Thread: Doing a pan drop tomorrow any tips?

Originally Posted by GR8racingfool

My service manual reads

"Install all 20 bolts and tighten to 97 inch lbs. (11 Nm)."

I do not have a inch torque wrench so I convert that number to foot lbs.

97 / 12 = 8.08 which means 8 ft. lbs.

~F~

It would serve you well to pick up a in lbs torque wrench. Most torque wrenches are inaccurate below ~30% of their adjustable range. This is such an issue it's a big safety violation for us (Air Force air craft maintainers) to use a ft lbs torque wrench for only 8 ft lbs.

Just FYI.

Not my picture but



I'm very sure its accurate. I own one like this. But I have heard that yes to use inch for inch, and foot for foot.

~F~

Originally Posted by GR8racingfool

I'm very sure its accurate. I own one like this. But I have heard that yes to use inch for inch, and foot for foot.

~F~

It's not a question of who makes it. It's the design of breakaway torque wrenches. They can't be entirely accurate under ~30% and usually over tighten. The only torque wrenches that retain accuracy across their entire range is the "beam" style, but they suffer from being inconsistent in general.

I own a beam type only for torquing things like lug nuts since breakaways that go to 100+ ft lbs are expensive. I have two breakaways; one ft lbs and one in lbs that have always met what I needed otherwise without going below the ~30% mark.

Back to the point, the brand doesn't matter. We use Snap-on torque wrenches at work and if you take it down to PMEL (Precision Measurement Equipment Laboratories) they'll show you the inaccuracies at certain levels. If you think a Snap-on torque wrench is cheap, go pick one up and see how much it costs.

Originally Posted by Sabrewings

If you think a Snap-on torque wrench is cheap, go pick one up and see how much it costs.

Ya, already own one skippy.

I bought me a semi-cheap off brand 1/2" drive torque wrench for lug nuts and other various high torque nuts and bolts. It does the job. Through my brothers work, I get mine calibrated yearly for free.

I have removed and installed enough wheels to know what 100 lbs. ft. feels like on my hand just using a break over bar. I check my work with a torque wrench and always pretty dead on.

~F~