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Old 07-26-2006, 04:26 PM
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torgue wrench

Is there a way a guy could check the calibration of a clicker style torque wrench??

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Old 07-26-2006, 04:37 PM
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yes but you need an open end pointer style/ dial style torque wrench ( that is calibrated ) and 2 sockets that are the same size welded togther, then put the pointer wrench in a vice and set the clicker for 50 ft/lbs or so and then crank on it, if it reads 5o ft/lbs when it clicks, it's in calibration.
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Old 07-27-2006, 10:34 AM
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Last edited by sbchevfreak; 07-27-2006 at 10:36 AM. Reason: double post
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Old 07-27-2006, 10:35 AM
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What kind of torque wrench? I don't really agree with the previous method, as clamping any kind of precision tool like a torque wrench in a vise is not advisable.
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Old 07-27-2006, 10:58 AM
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Sbchev, I agree I just don't see how a pointer type (I am assuming he means a beam type) wrench could even work if clamped in a vise, besides the possibility of damage to the wrench. Theoretically I suppose a dial type wrench may read correctly if clamped in a vise but I would not do that to any precision tool The simple and proper way to do this is to have it calibrated by a shop, check with a large service center or car dealer service shop to find where they have it done in your area. Even the local Sears here, at least some years back, would have any brand wrench calibrated for a small charge.
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Old 07-27-2006, 11:37 AM
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Thanks guy's for the come back,,
I'm getting ready to put my engine together,
My dad gave me this clicker and I'm not to sure of it's accuracy,
I have my old beam style wrench, I've been using for years, I trust it, but
I'd like to try the clicker, finally stepping up to the 70's, LOL

Bob
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Old 07-27-2006, 12:13 PM
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70, I know what you mean about wanting to check the accuracy of that thing before using it on your engine, I probably go a little overboard when I assemble an engine and have my wrench checked first if it has been used for any thing else in the recent past. Don't forget to "warm up" that clicker by first cycling it at the desired setting a few times when you get ready to use it. As far as the beam type if used properly they are very accurate and I myself even prefer them to a clicker but then that is just me.
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Old 07-27-2006, 02:18 PM
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A couple years back, Stock Car Racing Magazine had an article on how to check the calibration. If I can find the article, I'll see if I can type it out. I believe it used a "fixed, known weight" one gallon jug of water and a fulcrum to see the percentage it was off at a given torque setting. You just adjusted for the "off percentage" by adding that percentage to your old setting. If you follow me. I'll see if I can find it.


In a while, Chet.
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Old 07-27-2006, 02:23 PM
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I agree, send it out. I'm not sure, but Snap On used to calibrated other brands for a "small" fee. If taken care of properly, and never left on a loaded stting, a good quality torque wrench rarely needs calibrated.
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Old 07-27-2006, 04:03 PM
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Sbchev, Good point about leaving it on the setting for any length of time. There are a few no-no's such as NEVER pull on the wrench past the torque setting and never back it off much past the min. setting, loss of calibration can occur if you do either and of course as already mentioned never leave it on a setting.

NEVER, NEVER, NEVER let anyone use your torque wrench unless you are absolutely certain they know how to properly use it. Also NEVER EVER use a tool rental torque wrench because you have no idea how it has been treated and in all probably it has been abused to the max!
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Old 07-27-2006, 04:30 PM
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What do you guys mean (leave it on a setting)? Do you mean you should return it to zero when your done? I think mines been set on 25lbs since I did my intake 3 years ago! Good thing its a great neck and not a snap on!
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Old 07-27-2006, 04:37 PM
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I have a one 1/2" MAC click-off style since the sixties and instructions then were to leave it rest @30ft lbs. I have a MATCO 1/4" that I have never used and can check the instructions.

Most tool trucks can send them out for calibration (and yes it is good to check on a scheduled basis). I think I have the name of a calibrater here...I will have to try and find it.

I understand the new models can be left at whatever setting, but all of this depends upon quality of the tool.
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Old 07-27-2006, 07:41 PM
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yeah, don't do my method, someone at my autoshop class tried to convince me to do that. just wanted to hear peoples responses
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Old 07-27-2006, 07:47 PM
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Weird, If you are talking about a 1/2" drive that probably won't hurt a thing and could very well be a good setting to leave it on. If it is a 1/4" drive then it is a bit on the high side for most but most likely no harm done here either. Probably the biggest destroyer of calibration is over torquing past the setting, that will get one in a hurry! I have even known guys who would grab their torque wrench, because of it's long handle, and use it for a breaker bar without giving any thought at all to calibration loss, of course these are the guys who can never seem to figure why they have all the bad luck.
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Old 07-27-2006, 08:12 PM
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How do the clicker wrenches work? I'm curious as to how they can be damaged by the prolonged high torque setting. I hope this is not high jacking a thread...
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