[T3] Torque wrench?

William Jahn willjahn975 at gmail.com
Sun Jul 2 14:29:19 PDT 2023

 I only have two 3/8" drive 5-75 click type , on is an older sears with
numbers in a window and onee I got at auto zone which has the scale
micrometer. One 3/8" bean type 0-800 in lb and 0 90 NM . and a 1/2" beam
type for the lug nuts , also auto zone. And a 1/4" 20-200 in lb.

 My main concern was torquing the runners to the heads. I did use the old
sears set at 14 ft lbs and it clicked with very little effort, meaning it
felt right. I wanted to try and compare each just to see what they actually
read. .

On Sun, Jul 2, 2023 at 1:42 PM Jim Adney <jadney at vwtype3.org> wrote:

> On 2 Jul 2023 at 10:09, William Jahn wrote:
> > Is it true if you use one that is 0-75 ft lbs and you torque a nut to 14
> > ft lb it will be at a much higher valve
> I don't think that's generally true. It's probably true that all
> manufacturers
> calibrate their torque wrenches at one value, but the good ones will make
> an
> effort to make their wrenches linear. None will be perfect, but it's
> probably
> impossible to predict in advance what imperfections remain.
> It's probably true that most makers calibrate their wrenches near the top
> end
> of their range. What happens below that is probably more random than
> systematic.
> If the choice was mine, I would do the calibration somewhere between 66%
> and 90% of full scale. 75% seems like a nice happy medium.
> --
> *******************************
> Jim Adney, jadney at vwtype3.org
> Madison, Wisconsin, USA
> *******************************
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