924Board.org

[chris79]

In my 924 I have not original air conditioned system.
This picture is the exact point for charge the system ? Above the accumulator? There is a thread and if I remove the screw inside there is a transparent surface. This can be the valve for charge ?

http://plus.google.com/photos/photo/106493825386573398385/6305765586321080274?icm=false&authkey=CMPkhrihqqu9Rg
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Porsche 924 2.0 na 125hp (1979) euro
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Alfa Romeo Spider "Duetto" 1.6 104hp (1986) euro

[morghen]

That's the bubbles visiting thing. You charge it before the compressor. Go to a clima garage.
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Supercharger and EFI kits
https://www.the924.com

[TJC]

No! The transparent window is the sight glass to monitor the flow of Freon. The system gets charged through a threaded port with a Schrader valve in it on the low pressure (suction) side of the system. If you are not familiar with charging an A/C system I strongly suggest you take it to someone who is or educate yourself thoroughly before you do it yourself. I'm not trying to dissuade you from working on your own car just advocating safety as an incorrect move could have serious effects. Also, if the system has been empty for awhile it should be evacuated first and left in a vacuum for at least 1/2 hour to determine if there are any leaks otherwise you're just wasting your time.
Good Luck!
_________________
'95 BMW 318i/5 ..."Pearl"
'87 Porsche 944 NA... "Liebchen"
'02 Porsche Boxster..."Sunbeam"
'04 BMW X3..."Xander"
Still on the Prowl!

www.ttrs1.com

[brian19600]

The purpose of the sight glass is to see if there are bubbles. If there are, then the system needs more freon.

The connection may be at the back end of the compressor. You will have a high and low pressure connection.

LOL, it looks like 3 of us all answered at the same time.
_________________
78 924

[chris79]

I read that system must have a low and high pressure valve, but I don't found it.
Compressor have two pipes, one that go directly in cockpit, one that go to coolant system, then to accumulator and to cockpit.
There are no others valves.
_________________
Porsche 924 2.0 na 125hp (1979) euro
------------------------------------------------------
Alfa Romeo Spider "Duetto" 1.6 104hp (1986) euro

[brian19600]

Yes, and they may/should have plastic or metal caps covering them. You going to have to search around on the various hose fittings and find them. They are there in the engine compartment somewhere! Mine were on the hoses that connected onto the compressor. They shouldn't be hard to find.
_________________
78 924

[chris79]

I check system and there are no valves! How it's possibile?
_________________
Porsche 924 2.0 na 125hp (1979) euro
------------------------------------------------------
Alfa Romeo Spider "Duetto" 1.6 104hp (1986) euro

[morghen]

you're blind
_________________
Supercharger and EFI kits
https://www.the924.com

[chris79]

Not, I followed path of all pipes and I don't found valves.
_________________
Porsche 924 2.0 na 125hp (1979) euro
------------------------------------------------------
Alfa Romeo Spider "Duetto" 1.6 104hp (1986) euro

[TJC]

There are valves. They may be just on the compressor but there are valves either there or on the lines or on the receiver/dryer. Have you done any A/C research yet? Not trying to be sarcastic but you may just not know what you are looking for.
I still suggest that you take it to a pro, learn from him and then the next time you'll have the knowledge to do it yourself.

Look at these: https://www.bing.com/images/search?q=auto+ac+system+diagram&qpvt=auto+ac+system+diagram&qpvt=auto+ac+system+diagram&qpvt=auto+ac+system+diagram&FORM=IGRE
_________________
'95 BMW 318i/5 ..."Pearl"
'87 Porsche 944 NA... "Liebchen"
'02 Porsche Boxster..."Sunbeam"
'04 BMW X3..."Xander"
Still on the Prowl!

www.ttrs1.com

[chris79]

The pipe from cooling system to accumulator go in the front of car, ir may be that I don't look well this zone.
_________________
Porsche 924 2.0 na 125hp (1979) euro
------------------------------------------------------
Alfa Romeo Spider "Duetto" 1.6 104hp (1986) euro

[brian19600]

Here is a couple of drawings from the factory manual showing what the valves look like.




[/img]

Here they are on the back end of the compressor. They should be in a place where the gauges and hoses can be connected on for charging. I've seen some of the newer accumulators also having a low pressure charging port on the top, but that would be very easy to see.
_________________
78 924

[chris79]

Ah ok then I found them, there are two caps on compressor, these probably are the valves.

I need even of compressor belt that is broken, where can I find a personalized belt ?
_________________
Porsche 924 2.0 na 125hp (1979) euro
------------------------------------------------------
Alfa Romeo Spider "Duetto" 1.6 104hp (1986) euro

[chris79]

However I thought that instead of restoring the air conditioning , I could remove the compressor and make room for a turbine and then start turbo conversion 😃
_________________
Porsche 924 2.0 na 125hp (1979) euro
------------------------------------------------------
Alfa Romeo Spider "Duetto" 1.6 104hp (1986) euro

[morghen]

What a way of thinking...
You can probably keep the value of your 924 a bit higher if you dont destroy the AC and find a different place for the turbo.
_________________
Supercharger and EFI kits
https://www.the924.com