924Board.org

[Defender405]

I searched the internet for hours and could never find the exact easy answer to where the low pressure service port is on my 1979 N/A. In case I'm not the only one wondering, the Low Pressure port is located on the line that enters the compressor on the drivers side. Mine has the Nippondenso compressor, and looks to be one of the factory type units. The port near the dryer (beside the driver side headlight) is a high pressure test port, so don't try to add your freon there. R12 is actually pretty easy to come by around here, $20.00 per can on Craigslist, so I didn't bother to do a 134A conversion. The port on mine is pretty accessible from above and the Schraeder valve seems to hold pressure just fine. I had to jump the pressure switch, which is located on the dryer near the aforementioned high pressure port, to get the compressor to start. Added one 12 ounce can of R12 to the system, and now the A/C blows pretty dang cold. I can still see some bubbles in the sight glass, but the air is cold enough that I may just run with what I have for the present time. I will get photos of the associated parts and post them when I get home tonight, that way if anyone else has this question they can see what I'm talking about.
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Its only money, you can always get more.

1979 924 N/A
1975 MGB
1991 Infiniti M30
1987 300ZX Turbo

[michaelodonnell123]

Nice write up. I charged my a/c on my 1988 924S with R12 and yes...its pretty cold.
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MOD
1988 Porsche 924S
2007 Jaguar XK
2012 Fiat 500

[brealytrent]

I did some work to my turbo with the factory Nippondenso system as well but unfortunately there is a significant leak in one of the hoses... anyone know a place that can replace the old leaky hose?

Also, why are rebuilt compressors so expensive?! Are there any kits out there that I can purchase so I don't have to spend an outrageous amount to have some nice A/C?

One last question: The A/C fan never wanted to turn on when I got the car, found a ground at the fan/fan relay bracket was dirty. The A/C fan works miles ahead of the regular fan! Is the regular fan supposed to be so slow???
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1977 Porsche 924 - sold
1980 Porsche 931 - sold
1984 Porsche 928 'S2' Euro - sold
2016 Ford Fiesta ST - sold
2009 Porsche Cayman

[Grenadiers]

There are several write-ups on Pelican on general compressor rebuilding. And, yes the heat fan is incredibly slow.
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'83 944 Track car.
'88 924S Track car.
'89 944 Turbo
2004 Winnebago Vectra monster RV
2012 Jeep Wrangler
2014 Kia Soul
2001 Ford F350 powerstroke

[michaelodonnell123]