We use an IR 2135 to remove the center lug nut on a Porsche. These get
torqued to 340 foot pounds and left for a while, I figure breakaway
torque is around 500 foot pounds for removal. It won't do that on the
little compressor even if I charge it up to full 120 psi before pulling
the trigger. We usually do that job off of a N2 bottle regulated at 150
psi. Even then it takes a few moments to see it start to loosen and move.

I suspect you need larger hoses. I have a 3" cutoff tool that runs fine
in the shop, does not work at all well in the garage even though the
only difference is 50' of 1/2" ID copper pipe.

mark wrote:
I bought what is apparently the most powerful 1/2" drive impact wrench
available IR 2135 with 1000 ftlb or torque and am still finding it
weak. The other day it would not remove the bolts that hold on my
front brake caliper bracket and sometimes it wll not remove lugnuts. I
am using it at 125psi with 50' of 3/8" hose and 1/4" M (milton) quick
connects). Would going to 3/8" qc fittings help at all? I notived a
local tire shop has the air pressure at 150 psi. Is this what is
needed? How come air tools say never to go above 90 psi?