a/c specs
Le Mans Master
Joined: Aug 2000
Posts: 9,662
Likes: 7
From: Semper ubi, sub ubi
Cruise-In VI Veteran
Cruise-In VII Veteran
Re: a/c specs (Trent81)
Try posting over on http://www.aircondition.com they have a forum with experts to ask these sort of questions.
Good Luck!
Good Luck!
Race Director
Joined: Sep 1999
Posts: 11,361
Likes: 383
From: Plano TX
Re: a/c specs (Trent81)
Trent, The low side is what you should pay most attention to. Notice how the compressor cycles. With it off, pressure will go up until the compressor kicks on again. You want enough refrigerant to where it doesn't short cycle. I like to see the low side over 40 PSI before the compressor kicks on. You should then see a nice, gradual drop to 20 PSI or so where it turns off.
The high side varies a lot. If you start the engine cold in 85F weather, you should see about 200 PSI on the high side. After the car has been run for awhile I wouldn't be surprised to see 250 PSI. If it starts nosing up towards 300 I'd say you're either overcharged or under-fanned.
The high side varies a lot. If you start the engine cold in 85F weather, you should see about 200 PSI on the high side. After the car has been run for awhile I wouldn't be surprised to see 250 PSI. If it starts nosing up towards 300 I'd say you're either overcharged or under-fanned.
Instructor
Joined: Mar 2001
Posts: 225
Likes: 0
From: Pflugerville Texas
Re: a/c specs (Trent81)
Don't forget to see zwede' excellent writeup of the A/C system on his website. I found it very informative and will be revisiting that site when I get around to fixing (re-installing) my A/C.
On another note, I saw this on the harbor freight website and think it might be an alternative to the pricier stand alone vacuum pumps if you already have an air compressor... http://www.harborfreight.com/cpi/cta...temnumber=3952
-Jason
On another note, I saw this on the harbor freight website and think it might be an alternative to the pricier stand alone vacuum pumps if you already have an air compressor... http://www.harborfreight.com/cpi/cta...temnumber=3952
-Jason
