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Old 09-09-2003, 09:26 AM   #1
Scooby Newbie
Member#: 13399
Join Date: Dec 2001
Location: Stevensville, MI
91 Legacy
2.2 Liters of ScoobyPwr

Question Free 90 psi compressor - Accept or Reject?

I had a hard time deciding which forum to use for this ?.

I have a line on an older air compressor that's good for 90psi with a reservior that's about 1.5'diameter X 2.5' tall. Would this be good enough to run an impact wrench?

2nd question: Any suggestions on good places to pick up a wrench and hose? how bout size (1/2" or 3/4")? I'll be using it mainly to do work on my car.

Thanks for any info as I'm new to purchasing this type of equipment. I've used them before. I just never worried about sizing/psi ratings for the compressor etc...

If this works out like I hope, I'm going to one happy shop monkey!!!

Thanks, Brandon
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Old 09-09-2003, 01:34 PM   #2
Scooby Newbie
Member#: 19410
Join Date: May 2002
Chapter/Region: VIC
Location: Richmond, BC
'02 WRX Sedan
'95 LWRX Stage Rally


I'm no expert, but I'll write about my experiences. I think most gun-type impact wrenches are going to be 1/2" drive anyway, except the butterfly ones. It's a brute-force tool, so my main uses for my impact wrench have been to loosen wheel lugs, loosen frozen bolts (i.e. exhaust), and to loosen crank pulley bolts, so these are fairly heavy-duty things you'd want, or need a 1/2" for.

I'm assuming it has all the usual compressor stuff like the automatic switch, and a pressure regulator. It sounds like it has a fairly good air tank on it, so I think it would be fine for your use. My compressor tank is that size and I have no problems running the impact wrench and air wrench on it, especially since I only use one tool at a time. You only need a huge tank and pump capacity if you're using things like a die grinder, sander, etc. that need lots of air at high pressure for a long time. Most tools don't need more than 90 psi. Does it have a SCFM figure? Also, is it an oil-free compressor? Oil-free compressors will wear out, so keep in mind how long this might have been used.

You can pick up tools for pretty cheap ~$20-$30. What the more expensive ones do is consume less air, while the cheaper ones use more air because of their cheaper construction. The more expensive ones will usually have a higher torque figure.

The compressor is one of the best things I've gotten for working on the car. Just a quick blast on the impact wrench can be worth a few hours of frustration.


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Old 09-10-2003, 09:56 AM   #3
Scooby Newbie
Member#: 13399
Join Date: Dec 2001
Location: Stevensville, MI
91 Legacy
2.2 Liters of ScoobyPwr

Thumbs up 5yrs old

Well, I talked to the guy yesterday. He said it works good and that he has used it for 5 yrs. He needed higher pressure for work on his house so he bought a new one. Sounds good to me. Thanks for the input.

Now if I could just get that hydraulic lift
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