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  1. #1
    Jr. Mechanic Bowtied's Avatar
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    2004 Silverado 5.3L
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    Default 1/4" or 1/2" impact wrench

    hey guys i am wanting to buy an impact wrench and im curious here i want one that i can work on my bike and my truck with (so if the 1/4" means it will do everything BUT take of the wheels of the truck thats not a big exception) with emphasis on working on the bike more than the truck.

    im wondering whats the main differences with the 1/4" and 1/2" drive? just limited by range of sockets that will fit? if i need a metric impact gun should i not get one thats labeled in inches?

  2. #2

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    Get a 1/2" drive and you can use reducers when you need to use it for 1/4" sockets, but almost any socket in 1/4" is available in 1/2" too.
    Get a set of metric sockets with 1/2" drive too. A couple of extensions wouldnt be a bad idea either.

  3. #3
    Jr. Mechanic Bowtied's Avatar
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    Default

    I am thinking about buying this electric wrench:

    http://www.harborfreight.com/12-elec...nch-68099.html

    Is it any good? Should I wait til it goes on sale? Does it go on sale(With a coupon?)

  4. #4

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    Definitely the 1/2" drive for a few reasons. First of all is torque. To keep from breaking sockets and snapping fasteners, the 1/4" drive will not put out nearly the amount of ft-lbs of torque the 1/2" drive will. Most of the time that's good, but sometimes you do want lower torque. Some impact guns offer adjustable torque. Also, if you need to break a small fastener loose, a 1/2" drive ratchet with a couple reducers should be able to loosen those fasteners. I have access to a 1/2 drive and a 3/4 drive impact for my impact needs.
    Christopher

    1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4.10 gears 200K miles
    2005 Saturn ION-2 Stock 265K miles
    1982 Bronco, 1993 Bronco (sold), 1971 M35A2 Deuce and a Half



    There are 10 kinds of people, those who understand binary, and those who dont...

    Remember kids, the only difference between screwing around and science is writing it down- Adam Savage

  5. #5

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    just want to clarify do you mean 1/4" or 3/8" or 1/2". using a 1/2" to do stuff with 1/4" will give you too much torque and break most things needing 1/4". reducing 3/8 to 1/4 or 1/2 to 3/8 is most common. In your example the 3/8 will do most everything except the bigger bolts (ie lug nuts bolts 18mm+). the 1/2 will do thos bigger ones. 1/4" is typically you smaller low torque bolts 10mm and below (obviously can do bigger etc. and 3/8 will reduce down) but look at the socket wrenches 1/4 is real small/short. 3/8 is bigger and a little longer, and the 1/2 is much bigger and longer giving more leverage.

    in your other post. I use the 1/2 impact gun for lug nuts big bolts etc. I have a 3/8 impact wrench for the other smaller stuff.
    Last edited by dsfloyd; 10-25-2011 at 11:17 AM.
    David
    2004 Silverado 2500 Crew Cab 4x4, AMSOIL EA air filter, Granatelli MAF sensor, Throttle body spacer, Magnaflow exhaust (true dual to 2 in 1 out muffler), 6" ProComp lift (add a leaf and 5" superlift rear block), Bilstein shocks, 35's (Cooper Disoverer ST) and 4.10 gears, Rhino Liner, EGRUSA fender Flares and widow visors, extended stainless steel brake lines, firestone airbags w/onboard air compressor, Pioneer Avic X940BT navigation, Accel backup camera.
    http://www.gmtruckclub.com/forum/sho...Silverado-2500
    1960 Land Rover Series II 88
    2001 Pontiac Sunfire
    2013 Toyota Avalon Limited (Wife's Car)
    NRA Life Member

  6. #6
    Jr. Mechanic Bowtied's Avatar
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    Default

    in your other post. I use the 1/2 impact gun for lug nuts big bolts etc. I have a 3/8 impact wrench for the other smaller stuff.


    do you mean you bought the same electric impact wrench from harbor freight? i plan on doing some work on my motorcycle and truck with the impact wrench. i think i may end up getting 1 of each tho, a 1/2" and a 1/4"

  7. #7

    Default

    Quote Originally Posted by drwombat View Post
    do you mean you bought the same electric impact wrench from harbor freight? i plan on doing some work on my motorcycle and truck with the impact wrench. i think i may end up getting 1 of each tho, a 1/2" and a 1/4"
    no i havent purchased the electric one. I have a 1/2" impact gun (like the pic but pnuematic) which i use for lug nuts and larger bolts or I will reduce it to attach 3/8" sockets for some of the more stubburn standard bolts. for most bolts on the car/truck i use a 3/8" impact wrench (pnuematic) or just a regular 3/8 socket wrench. I hardly use the 1/4 socket wrench as its mainly for small low torque bolts which I will do by hand. I do 95% of the work with 3/8" or the 1/2" reduced to a 3/8" socket size. if you are going to buy one get the 1/2" with 1/2" sockets and a 1/2-3/8 adapter with 3/8" sockets. or get a 1/2" and 3/8 if you want two
    David
    2004 Silverado 2500 Crew Cab 4x4, AMSOIL EA air filter, Granatelli MAF sensor, Throttle body spacer, Magnaflow exhaust (true dual to 2 in 1 out muffler), 6" ProComp lift (add a leaf and 5" superlift rear block), Bilstein shocks, 35's (Cooper Disoverer ST) and 4.10 gears, Rhino Liner, EGRUSA fender Flares and widow visors, extended stainless steel brake lines, firestone airbags w/onboard air compressor, Pioneer Avic X940BT navigation, Accel backup camera.
    http://www.gmtruckclub.com/forum/sho...Silverado-2500
    1960 Land Rover Series II 88
    2001 Pontiac Sunfire
    2013 Toyota Avalon Limited (Wife's Car)
    NRA Life Member

  8. #8

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    Chicago tools, too many nightmares here haha


    2003 GMC Sierra 1500 SLE 5.3
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  9. #9

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    I would go with the 1/2inch drive, way more power and overall performance. Buy a good one that will stay with you for a while. I have had a few that went to crap from Harbor Freight, yes the cheaper ones. I tell you what, 2 years ago I bought a Snap On 1/2inch drive that has various settings. The main reason I got it was for stubborn nuts and bolts. This gun has 1600lbs of take off and 1000 lbs put on. Yes that's right, no error here, this gun is my baby I have yet to see a rusted or stubborn bolt that this thing cannot buzz off.
    Dave V. -- Riverside, California
    Owner of --
    2008 Chevrolet Silverado 1500 4.8Liter V8 engine 2WD w/Kenwood Double DIN CD/DVD Player
    1971 Chevrolet Chevelle 350ci V8 engine with 500+ horsepower (Still Under Construction)

  10. #10

    Default

    I'll spare any of the reasons because every one else has more or less covered it. lol but iv'e got both and i don't even use the 1/4" only use the 1/2"
    2003 Chevy Silverado
    4.8l 5 speed
    Reg cab Long bed
    Rhino Lined
    (Gotta love your truck!)

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