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Any way to "guess" torque without a torque wrench?

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Old 03-26-2010, 01:25 PM
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Any way to "guess" torque without a torque wrench?

I want to do my crank pulley, because I have to change the crank seal, so why not get a new pulley, right? My only concern is torquing the thing back down to 85 ft/lbs. My current torque wrench only goes up to 75. Is there any way to sort of "guess" where 85 ftlbs is, once I've torqued it up to 75? Like say 75+ an extra turn?

And no "buy a new torque wrench!" comments.
 
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Old 03-26-2010, 01:49 PM
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Originally Posted by Aeromax

And no "buy a new torque wrench!" comments.
You can get Harbor Freight 1/2 for about $10.
Just saying.
 
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Old 03-26-2010, 01:52 PM
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I wouldn't say buy a new one....but... borrow one? Torque specs are something you don't want to guess on. Especially on an important part of your engine. Trust me.... you don't want to lose your crank pulley!
 
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Old 03-26-2010, 02:17 PM
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A good mechanic could probably come close. The rest of us, well, short answer is no. I'd definitely buy, rent, or borrow...
 
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Old 03-26-2010, 02:18 PM
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Well

I'm calibrated to three+ settings...

Snug
Snug+
Tight
Really F**king Tight!

For 85, go to when the 75 pops, then go a tiny bit more!

But really, if you don't have the tools to do the job right.......

Matt
 
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Old 03-26-2010, 02:48 PM
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Torque is force times lever arm, so if you had a good-sized breaker bar, a coffee can, a piece of rope or wire, and a large quantity of pennies, you could get as close to 85 lbs-ft of torque as most (uncalibrated) torque wrenches. ;-)

Alan
 
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Old 03-26-2010, 02:52 PM
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Originally Posted by Blu_Pug
Torque is force times lever arm, so if you had a good-sized breaker bar, a coffee can, a piece of rope or wire, and a large quantity of pennies, you could get as close to 85 lbs-ft of torque as most (uncalibrated) torque wrenches. ;-)

Alan
Sorry Alan...but I think its nickels not pennies
 
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Old 03-26-2010, 05:54 PM
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many chain part stores will loan tools

you just leave a deposit which they return when you bring the tool back undamaged......
 
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Old 03-26-2010, 06:16 PM
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so 400.00 for the damper and another what 75 or 100 for the torque wrench ?buy a torque wrench!!!!
 
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Old 03-26-2010, 06:46 PM
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Please do as suggested a buy a torque wrench with a higher setting. It'll pay off in the end because if you are doing a crank pulley, you obviously will be doing something else in the future that will use it. It's a great investment. If you don't, then at the least do like the Capt. Suggests and use Advance Auto Parts loan a tool. You'll get your money back provided you don't break the tool. Torque settings are very important, but more so on some than others. I wouldn't guess on somehing like a crank pulley unless my life depended on it.
 
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Old 03-26-2010, 07:01 PM
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Use the German standard - 'gutentite'
(but really, get the wrench!)
 
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Old 03-26-2010, 07:30 PM
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Originally Posted by Aeromax
...My current torque wrench only goes up to 75. Is there any way to sort of "guess" where 85 ftlbs is, once I've torqued it up to 75? Like say 75+ an extra turn?

...
Definitely not one extra turn. That would be way too much!
 
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Old 03-26-2010, 07:43 PM
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Originally Posted by Aeromax
where 85 ftlbs is, once I've torqued it up to 75? Like say 75+ an extra turn?
You already have your answer, but think about what you just said above.
An extra turn (360 degrees to be exact) wouldnt that be way more than the extra 10 ft Lbs after the 75?

Now I'm just guessing at that figure and so are you..So I Wouldn't.
 
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Old 03-27-2010, 04:34 AM
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You'd be surprised on what a click type wrench set a 75 is actually pulling. It takes a alot of finesse to get 75 out of one. I calibrate torque wrenches all day long. If your talking about a click type with a twist handle they have a spring that is compressed , at the top of the scale there is some spring left but it will go coil bound if you went too much over scale.
 
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Old 03-27-2010, 05:26 AM
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Originally Posted by ntmid8r
You already have your answer, but think about what you just said above.
An extra turn (360 degrees to be exact) wouldnt that be way more than the extra 10 ft Lbs after the 75?

Now I'm just guessing at that figure and so are you..So I Wouldn't.
That completely depends on the threading of the bolt/screw.

To the OP, get a foot long wrench and something weighing 85lbs. That's as good a guess as any.
 
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Old 03-27-2010, 07:57 AM
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Ok well... I guess I'm getting another torque wrench! I knew it was a bad question to ask...
 
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Old 03-27-2010, 08:06 PM
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Originally Posted by Aeromax
I knew it was a bad question to ask...
shocking...

If your torque wrench only goes to 75, how do you torque your wheels?
 
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Old 03-27-2010, 08:14 PM
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Originally Posted by IanF
shocking...

If your torque wrench only goes to 75, how do you torque your wheels?
You really want me to answer that?
 
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Old 03-29-2010, 11:32 AM
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Originally Posted by Aeromax
You really want me to answer that?
Taking the 5th, eh?
 
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Old 03-29-2010, 12:38 PM
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Originally Posted by IanF
Taking the 5th, eh?
After that flaying I got, hells yes.
 
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Old 03-29-2010, 12:41 PM
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Originally Posted by JPMM
You'd be surprised on what a click type wrench set a 75 is actually pulling. It takes a alot of finesse to get 75 out of one. I calibrate torque wrenches all day long. If your talking about a click type with a twist handle they have a spring that is compressed , at the top of the scale there is some spring left but it will go coil bound if you went too much over scale.
Where can I get my torque wrench calibrated for less than the cost of a new one?
 
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