Well guys for those of you that service your own A/C sys. here is a tip. Go find an old water cooler or small fridg. and remove the pump inside of it, it should look like the one in the pics below. Use the pics. to set it up, fitting wise. I cannot take credit for this, it is a coworkers that I have borrowed.
http://www.sr20forum.com/gallery/data/971/thumbs/100_5427.JPG (http://www.sr20forum.com/gallery/showphoto.php?photo=14081)http://www.sr20forum.com/gallery/data/971/thumbs/100_5428.JPG (http://www.sr20forum.com/gallery/showphoto.php?photo=14082):biggthump

And Yes vacuum, say it: VACUUM

thats cool....,but I found that Autozone will rent it FREE(like other tools)
You have to pay for it in full and they refund ALL your money when you return it.
The bad side....its like 200 bucks for the pump for the deposit

LOL, thats a refrigerator compressor, I dont think that is going to pull a vacuum on your A/C system, get a real vacuum pump and run it for 20min it will clean the system, then see if it holds the vacuum presure for another 20 that you will know if the system has leaks. Charge it with this stuff : http://autorefrigerants.com/co00033.htm

This lil vac pulls it down to -28in/hg, It did state in the fsm that the low press gauge should indicate -29.13 to -29.92. your right, although this is "oak tree" mechanics I am talking about. It works, trust me, and if you can get one free, why not.
Thanks for the tip on the frigerant, seguroski, and thanks for your support.

28in/hg! with a fridge compressor, cool!
I migth try that myself if I find a old fridge

Well guys for those of you that service your own A/C sys. here is a tip. Go find an old water cooler or small fridg. and remove the pump inside of it, it should look like the one in the pics below. Use the pics. to set it up, fitting wise. I cannot take credit for this, it is a coworkers that I have borrowed.
http://www.sr20forum.com/gallery/data/971/thumbs/100_5427.JPG (http://www.sr20forum.com/gallery/showphoto.php?photo=14081)http://www.sr20forum.com/gallery/data/971/thumbs/100_5428.JPG (http://www.sr20forum.com/gallery/showphoto.php?photo=14082):biggthump

And Yes vacuum, say it: VACUUM

We have been doing this for years. It works awesome. We even put an old boost guage on it to read the vaccum :D

The lil pump that could.
found a dorm fridge for sell yesterday, $25
I have been pricing vacume pumps for about a year, even at pawn shops, the cheapest I have found was 100.00 bucks.
Ed