jeggy

ingersol rand 2135ti. 1,000 lbs-ft. weighs 4 lbs. most powerfull 1/2 impact i know of. stronger then most 3/4 impacts.

clawhammer

I should add no more than $150

jeggy

anything IR. i think most snap-on are rebadged ingersol's

cdelena

I have loaned my IR impact twice now to people that have cheap wrenches that cannot produce enough torque. Mine is a 2131A but you find a wide variety of IR impacts to choose from.

RadioZero

after reading the specs on your compressor, make sure you buy an impact gun that can run on your CFM's @ 90 psi. the impact gun will specify what CFM it takes to operate correctly.

Picturepro

i bought the sears 33 gallon compressor kit

The impact and air rachet are POS, line pressure to 100lbs... and impact would not break free 100 lb tq wheels lugs.

anything GOOD cost $$$

RadioZero

line pressure on most air tools is Max 90 psi. compressors are more about CFM @ 90 psi. also not all impact guns are created equally.

clawhammer

Well I'm watching a few Ingresoll Rand impact wrenches on ebay. I already have a set of impact sockets from Ingresoll Rand.

Slows2k

For pnuematics I've used/owned IR 231, IR 2131, Snap-On IM6500, ATC500 and a Matco badged 2151Ti.

The 231 is the best for the $, great ergonomics and tough as nails. A co-worker of mine used his 231 for 8 years every day doubling as a hammer. He would smack brake drums with the back of the wrench to loosen them.

The 2131 has more power and speed, and the same great IR durability/ergonomics. You just can't use the composite wrenches as a hammer.

All the Snap-On wrenches have top heavy ergonomics, and less power than the IR's at the same inlet pressure. To much $$ for the performance. The Ti series wrenches make great power, and low noise. Any IR impact you will love.

For Electrics, I've got 2 Snap-On cordless in 1/2 and 3/8 drive 12V and 18V respectively. Both get used heavily, the 3/8 has gone for 6 years without any problems. The 18V model will take off lug nuts with ease. The Snap-on wrenches have power than the Makita cordless models as well. (The Makita's I've used at least)

Race Miata

Agree that don't get cheap on tools. You don't want to buy again later because the one you bought is not good enough. IR is the best (and not cheap). I love my IR (I think 2131). Compare with my friend's similar class 600lb-ft rated Snap-On, the IR is smaller, lighter and consumes less air (which can be beneficial if your compressor and hose are marginal which I think yours are). Most 600lb-ft guns need 4+CFM at 90PSI. I have a belt-driven (much more quiet) twin-cylinder compressor (9 CFM IIRC). I noticed improvemnt when upgraded from the 1/4" compressor hose to 3/8". You'll probably find those coiled hoses don't flow good enough (we did).

EDIT: Oops, correction. I meant changing from 1/4 to 3/8 hose.