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Tool Talk Discussion Forum

How to Torque with Impact Wrench, (shamelessly sto

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Dell (WA)

12-28-2004 20:44:36




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Just ran across this

HOW TO TORQUE WITH AN IMPACT WRENCH.

(Remember this is just a joke!)

Yes you can use your impact gun to torque nuts and bolts if you use this handy chart along with your ears and a quick trigger finger.

TORQUE VALUE INGERSOLL IMPACT SNAP-ON IMPACT
25 to 35 ft/lbs BAP! BAP!
35 to 45 ft/lbs BAP! BAP! BAP! BAP!
45 to 60 ft/lbs BAP! BAP! BA... BAP! BAP! BAP!
60 to 75 ft/lbs BAP! BAP! BAP! BAP! BAP! BAP! BA�
75 to 90 ft/lbs BAP! BAP! BAP! BAP! BAP! BAP! BAP! BAP! BAP!
90 to 100 ft/lbs BAP! BAP! BAP! BAP! BAP! BAP! BAP! BAP! BAP! BAP!
110 to 300 ft/lbs ALL GUNS BAP! BAP! BAP! BAP! BAP! BAP! BAP! BAP! BAP! BAP! BAP! BAP! BAP! BAP!

(Source - Bubba's Auto Teknikal Tips, 1123 Chaw Rd., Spit, TX 75999

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txblu..sarcasm

01-02-2005 17:40:17




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 Re: How to Torque with Impact Wrench, (shamelessly in reply to Dell (WA), 12-28-2004 20:44:36  
Well for any purists here having a big laugh, when is the last time you had your torque wrench calibrated; or your dial caliper, or your micrometer?

Consistent pressure is more important than actual torque and if you know what you are doing with an instrument you know you can do a fine job of repairing machinery with a torque wrench.

Now let's see the head bole torque is 150 ft/lbs..... hmmmmm now is that with a boiled out block and new bolts, or with the block the way the threads were when I took the bolt out, and do I have to wire brush my bolts prior to installing.....hmmmm wonder how much any of these variables will affect my "non-calibrated" torque wrench.

Mark

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txblu...correction

01-02-2005 17:42:33




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 Re: How to Torque with Impact Wrench, (shamelessly in reply to txblu..sarcasm, 01-02-2005 17:40:17  
Second paragraph, next to the last word.

Torque should read impact. Got my dander up and can't even type.

Mark



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txblu...forgot sumpin

01-04-2005 05:18:58




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 Re: How to Torque with Impact Wrench, (shamelessly in reply to txblu...correction, 01-02-2005 17:42:33  
Now let's see what was the tolerance on that 150 ft lbs? Funny I didn't see one. Well everything has to have a tolerance of some kind. Is it .00000 00000 00000 000001 ft/lb or +/- 10% or what? It wasn't stated????? ??? Must not be all that important then..... ..hmmmmm mmmm.



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NC Wayne

12-29-2004 22:03:39




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 Re: How to Torque with Impact Wrench, (shamelessly in reply to Dell (WA), 12-28-2004 20:44:36  
Dad and I are a little less sophisticated. We both use the proper tool when building engines etc, but when it comes to the non critical parts torque is measured in "grunts"..... .IE-how much you stress yourself and grunt before the bolt is tight..... ... I've never actually checked the range grunt scale, it differs for everybody, but it goes from something like a 1/4 bolt at say 1/10 grunt up to a 1/2 bolt at about 1-1/2 grunts Then you get into the larger sizes at 2+ grunts on up til you grunt so hard that you know it's plain sh-- tight because you grunted so hard tightening it that you thought you just did..... Like another post said though when your tightening fasteners all the time after while you get to where you can do it pretty consistently without a torque wrench. What really screwes me up nowdays is these bolts with the washer head. I've yet to find a way to even get close to consistent with them without a torque wrench.

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ShepFL

12-29-2004 08:27:05




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 Re: How to Torque with Impact Wrench, (shamelessly in reply to Dell (WA), 12-28-2004 20:44:36  
Wish I had this earlier :)
I would have shared this with the fella who rotated my tires. See link for a long but funny read!



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Big Jim

12-29-2004 01:27:48




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 Re: How to Torque with Impact Wrench, (shamelessly in reply to Dell (WA), 12-28-2004 20:44:36  
May be intended to be a joke but it actually happens. I used to build a number of engines. With a little practice, I got to where I could consistanty hit the rods, mains, and heads to roughly 80% of the final value and never be over. Definitly not a recommended method unless you do it frequently.



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Butch(OH)

12-28-2004 20:57:02




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 Re: How to Torque with Impact Wrench, (shamelessly in reply to Dell (WA), 12-28-2004 20:44:36  
LOL, You know what BAP, BAP, BAP, BAP, wizzzzz zzzzz means? Time for a new nut and stud and use the right tool next time. There is a handy item called torque sticks, normanly sold for tire shops to install wheels on cars. I have a set in the shop that I use for certain jobs that require less than torque wrench accuracy but better than guessing. They require that you test them with your gun at X setting and check with a torque wrench before you hammer away on some bolts but are more consistant in there torque than I would have thought.

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Big Jim

01-02-2005 22:15:30




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 Re: How to Torque with Impact Wrench, (shamelessly in reply to Butch(OH), 12-28-2004 20:57:02  
I heard about a way to torque unknown fasteners: Tighten untill it breaks and back off 1/4 turn :-}



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lucassS

12-30-2004 12:58:46




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 Re: How to Torque with Impact Wrench, (shamelessly in reply to Butch(OH), 12-28-2004 20:57:02  
for some reason this takes me back to the 1960's when i was 14 working on weekends at our local marathon station.basically , i didnt know what the hell i was doing. they would send me on wrecker runs,,with no drivers liscence ...oil changes, and tire repairs... the first time i had a chrysler in to take a left tire off,,BRAP BRAP BRAP...i twisted the nuts off with the impact..they were left hand threads.... och!! LUCASS

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