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

http://i414.photobucket.com/albums/p.../930acline.jpg

Yes.

Thanks

When in doubts DON'T...

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)

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.

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.

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

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.