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What Impact gun for removing crank bolts?

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Old 01-08-2014, 01:24 PM
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Default What Impact gun for removing crank bolts?

Getting really tired of the cheater pipe method lol. I do have a cheap Craftsman 1/2 inch impact driver but that thing has trouble getting my wheels off at times

The compressor I have maxes out at 125psi, Is that also a problem?

Can anyone recommend a good impact gun?
Old 01-08-2014, 11:59 PM
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aside from a good impact..........you can try cranking the pressure up on the regulator and running a 1/2" or bigger air line from the regulator to the gun.

Ls crank bolts are mean as **** when torqued properly.
Old 01-09-2014, 12:02 AM
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more time in the gym. i just use a regular 1/2 breaker bar. with the flywheel locking tool i have its easy to break that ****** loose. i have used my 18v Dewalt 1/2 drive impact before though.
Old 01-09-2014, 01:01 AM
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I use a matco mt1769 it's pricey but works awesome. Over 1100 ftlb of breakaway torque. The psi of your air compressor isn't important. Most air tools use 90psi the cfm is the important number usually the better quality of tool the less cfm required to use it.
Old 01-10-2014, 12:13 AM
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Originally Posted by goinfast
I use a matco mt1769 it's pricey but works awesome. Over 1100 ftlb of breakaway torque. The psi of your air compressor isn't important. Most air tools use 90psi the cfm is the important number usually the better quality of tool the less cfm required to use it.
Your mistaken.

The cfm rating of the compressor is used to determine its capacity for continuous use, and likely would have no effect on how good it would run an impact tool as they are not used continuously with the compressor running. The tool has a cfm usage rating at 90 psi which, across brands and tools, isn't a likely measure of how much power the thing generates.

Cranking the psi up on the regulator will have a drastic effect on impact performance.
Old 01-10-2014, 09:57 AM
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Yup I screwed that up. Sorry for the bad info guys.
Old 01-10-2014, 11:17 AM
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Harbor Freight has their "Earthquake" series which works really well. For about $80 (plus can use 20% coupon), you can't beat the 1/2 inch impact in my opinion.

If you don't want HF, I suggest IR or Snap On if you want something really nice. Of course you'll pay for it though.
Old 01-13-2014, 09:16 PM
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i used a cheap $30 Harbor Freight impact when i took mine off my LH6 5.3 ... had to heat up the bolt head a LITTLE to soften up the sealer on it. used propane and counted to 90. after that the bolt came right out. didnt even use the locking tool to remove or install

hope that helps.
Old 01-18-2014, 10:19 AM
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On a lot of cars you can't get a impact on it with the engine in the car.

Locking tool and a breaker bar is what I use.

Tim
Old 01-18-2014, 04:00 PM
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I have an older Snap On 1/2" drive that took mine off lickety split
Old 01-18-2014, 06:19 PM
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I would hate to snap a crank bolt off .
Old 01-24-2014, 01:12 PM
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I would tend to think a breaker bar is sometimes easier to get on the crank bolts.

Given the space allowed most of the time between the motor and radiator etc., a socket and breaker bar takes up far less room than a gun and hose.

If it's not that easy...put an extension on lol.
Old 01-24-2014, 02:25 PM
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I have an
Ingersoll-Rand 2130 Ingersoll-Rand 2130
that I use as much as possible. It should be able to handle correctly installed (non-cross threaded) crank pulley bolts without a problem. However, I always recommend using hand tools to remove a crank pulley bolt to prevent the possibility of the head breaking off and the rest of the bolt being stuck inside of the crank.
Old 01-24-2014, 02:29 PM
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Aside from compressor and gun, take a look at your plumbing situation. An impact and full load uses quite a bit of air. If you have a lot of fittings more a long length of small diameter hose, that will cut the power drastically.
Old 01-25-2014, 02:10 AM
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Originally Posted by ZexGX
I have an Ingersoll-Rand 2130 that I use as much as possible. It should be able to handle correctly installed (non-cross threaded) crank pulley bolts without a problem. However, I always recommend using hand tools to remove a crank pulley bolt to prevent the possibility of the head breaking off and the rest of the bolt being stuck inside of the crank.
I agree with this guy. I have screwed up more crap regarding crank bolt/balancer removal on ls motors using air that I care to share. If you have the right hand tools for the job, removing the bolt and balancer by hand is the safe (only) way to go.
Old 04-21-2014, 05:28 PM
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I use an IR-7150. No air needed. I also use 2135QTiMAX. They both work great. Hand is the smartest way, but I am lazy and my joints hate loosening the high torque fasteners.
Old 05-19-2014, 10:54 PM
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I don't care what you all are saying. I have a 1500lb impact and there are times when the 4ft gas line pipe/cheater is the only way to go. Pyramids were not built with cranes. They used simple machines. You can feel what the bolt is doing by hand.

Map gas torch and pb blaster over night helps. The 1/2 in air line makes a big difference though. Like a fire hose compared to a garden hose. Which will you use to put out a house fire......
Old 05-31-2014, 11:23 AM
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I have an EQ 1/2" impact and it serves me well for general duty but it couldn't remove a crank bolt in it's own wet dream, ever.
Old 06-26-2014, 04:33 PM
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ive been using my craftsman heat gun for over 10 yrs. got I when craftsman still made quality tools. the heat gun gets hot enuff to make metal glow red. im not big on using torches near electric wiring and plastic parts.
use a heat gun. with a breaker bar to remove the bolt. I think my 12 point 24mm 1/2 drive deep socket bites better on the hex head of the stock crank bolts. ive yet to break a stock crank bolt. so far.so good



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