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Join Date: Dec 2001
Posts: 147
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Last edited by FR Wilk; 04-11-2007 at 04:59 AM.. |
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08-21-2003, 09:35 PM
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Join Date: Jun 2003
Location: Phoenix, AZ
Posts: 1,327
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High side pressures are well above the range of most tire gages.
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87 951, K27/6, Almond Beige, 17" Turbotwist 87 944S, alpine white, 5sp died a violent death 84 944, silver/brown, auto, gone but not forgotten "may the force be with you" |
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08-21-2003, 09:59 PM
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vott does ziss do?
Join Date: May 2003
Location: Seattle
Posts: 6,676
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whence ye hail, my friend? for I am endowed with said proper instrument, lest ye borrow that which is mine.
oh wait, you're in Cali, aren't ya.
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08-21-2003, 09:59 PM
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vott does ziss do?
Join Date: May 2003
Location: Seattle
Posts: 6,676
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so then why would you want to use a tire pressure gauge, *** ****?
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08-21-2003, 10:28 PM
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That Wilk, always a-thinkin. Y'know, a lot of bike gauges (where the shraeder has it's 3 most applied application, next to a/c and Big Apple Dominatrix') go well over 100psi (road bikes have insane pressures). How high would an auto a/c be? Do you have to check it on the high side? would the low side be adequate just to see if you have press. or not?
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*Disclaimer: The person above is actually dumber than he appears. my web site Torque values maintainance and repairs lots of my rebuild pics weights and measurements '84 944 auto/ps/ac/cc '86 951 Providing ignorance one post at a time. |
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08-21-2003, 11:06 PM
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Join Date: Jul 2003
Location: Cincinnati, OH
Posts: 1,025
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how can you tell if youre system has been switched over to the new freon?
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Special Edition 924S 1988 <- SOLD! Asking if you should replace that timing belt is like asking if you should re-use a condom that may have in hole in it with a hooker. |
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08-21-2003, 11:35 PM
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Join Date: Feb 2000
Location: Kingsport, TN
Posts: 2,935
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When the system is off, the pressure should equilibrate to somewhere around 60 psig everywhere, depending on the temperature which defines the vapor pressure. I've never put my tire gauge on it but I don't seen any problem. My gauge is a Bourden (sp) type gauge. I even use it to check water pressure. Innards are brass, I believe. When running, high pressure side would be way to high for my gauge which only goes to 60 psig.
I'm off to Road Atlanta for a PCA DE this weekend. Leaving shortly and will enjoy my new Sanden compressor that I installed two months ago. Also just finished replacing compressor on my old MB last weekend. I feel cool!
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Lawrence 1986 951 2002 SLK32 AMG 1987 328GTS 2011 528i Last edited by Lawrence Coppari; 08-22-2003 at 03:44 AM.. |
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08-22-2003, 03:41 AM
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Join Date: Jun 2003
Posts: 396
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I can think of one issue with using a tire gauge(other than the high side pressure).
It would lead to frost bite  You know how you always seem to lose about 5psi of pressure just trying to get the damn gauge to read on the tire..... Besides, most gauges are metal, it'll get cold real fast.Here is a good question. Where can we get just the Barrier hoses without having to buy the whole Kuehl A/C kit?
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Jack 86 Red 951 - Turbo Twists, otherwise stock for now 83 Black 944 w/86 951 front end - still down and out, but coming back slowly. 02 Altima SE 3.5 - grocery go-getter 00 Yellow Ducati Monster 900i.e. 88 Chrysler Conquest TSi |
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08-22-2003, 07:43 AM
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Join Date: Jun 2003
Location: Phoenix, AZ
Posts: 1,327
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I'm 57 years young and can't for the life of me ever remember any r12 cans with anything but the male threaded end which would be connected to the yellow hose on the a/c manifold set or directly to the low pressure, male threaded, side of the compressor.
If you piped it directly into the compressor from the can with the hose that came as a kit, without a manifold set, you had no idea what the high side pressure is, taking a big chance on running the pressure too high. I've worked on a bunch of old a/c when r12 was $1 a can and never saw any r12 systems with a schraeder valve on the high or low side.
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87 951, K27/6, Almond Beige, 17" Turbotwist 87 944S, alpine white, 5sp died a violent death 84 944, silver/brown, auto, gone but not forgotten "may the force be with you" |
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08-23-2003, 09:04 PM
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'84 Porsche 944 2.5L
