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BMAN 07-15-2012 07:14 AM

Is The A/C High Side On The Top Left Of This Picture
Its been many years when I had my old 86 930 and just can't remember which one is the high side? Thanks

aerochip 07-15-2012 07:46 AM


BMAN 07-15-2012 09:55 AM


Miguel Antonett 07-16-2012 10:48 AM

When in doubts DON'T...

aerochip 07-16-2012 11:08 AM

I am pretty sure the high pressure line comes from the Condenser. High Pressure is also "Discharge", which is noted by the "D" on the fitting he is referring to. On my '85 930, the Condenser is connected to the High Pressure, D side. Low pressure goes to the Evaporator, which is inside the car.

This article was helpful when I went through this question and my a/c tech verified: Pelican Technical Article: Air Conditioning on the 911 - 911 (1965-89) - 930 Turbo (1975-89)

WinRice 07-16-2012 11:23 AM

On a factory system (read as un-hacked) the high pressure side is the smaller diameter hose, the low side is the large hose. In the above pic, high is the top hose.

BMAN 07-16-2012 01:28 PM

Thanks guys I charged it yesterday but the low side at the valve is leaking. I notice the valve is sticking out much more then the high side. I tried to tighten it with no luck.

SEE YA 07-17-2012 05:05 AM

Most 930 owners in the U/K remove them I did anyway?

BMAN 07-17-2012 02:25 PM

My old 86 930 with the low side set at 30 and high side 200 would blow 34 and that was on a stock system.

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