I recently had the aircon system in my euro Minty converted to R134, as the system was empty after many years storage anyway, but also because its near impossible to find R12 freon anywhere in Europe. After I had the aircon converted it worked nicely for the first days when its was really hot. The next time I needed to use aircon was a month later and no cool air what so ever.. Looking under the car the reason was pretty clear..






When it was converted, it also had the oil changed in the compressor, but nothing beyond that. So I guess the compressor seals have dried out causing the massive leak everywhere.. My question is, can the compressor be rebuild or do I need to source a new one.? If it can be rebuild, does it just need new seals or is it more complicated then that.?

Thanks - Alex

 

griffiths is the go to source for air conditioning components. 134 molecules are slightly smaller than 12s so a barrier hose is recommended for the high side.

i would recommend one of his kits for the conversion which includes the reciever/dryer/dehydrator, high side hose and the compressor. it is recommended to flush the system first with the compressor removed as the oils are not compatible. always replace the dryer when the system has been open. any residual moisture will eat the aluminum components from the inside out.

 

Thanks Thomas, the system has already been converted including new dryer, flush, new oil etc. But besides a barrier hose for the high pressure side, can the compressor itself be reconditioned so it doesn't leak everywhere.? Its works fine it seems, it just leaks R134 everywhere..? Or I am better off buying a new one.?

Thanks - Alex

 

the reconditioned units Griffiths sell are theoretically better than new ones but they do sell rebuild kits.

http://griffiths.com/products/porsch...essor-parts-2/

 

Alex,

Not sure if this will help, but I found the information interesting...

https://griffiths.com/product/968-re...ndenso-kit-92/

-Yogii
AKA 968 Novice

 

I would say you could do either, depending on how much time you personally want to invest in the compressor. As far as the high side hose goes, when I did the conversion on my 968, I asked Griffiths about the barrier hose and they said I didn't need to purchase it. Air runs 38F at outlets, so I am pleased with performance. All I had to change was fitting adapters, new oil and refrigerant. Didn't even have to change dryer, temporarily sealed it when unhooked, no issues.

 

The compressors are available "new" in the US for very reasonable prices; not sure if that's the same in Europe.

 

I had a similar problem back when I was driving my old Volkswagen. It was a nice car, but it was getting old, and one day the AC broke. It was also not changing from hot air to cool air. I thought there was something wrong with the AC, so I ordered a new one from https://www.socool.sg/. I removed the old AC from the car and placed the new one in, thinking this would fix everything, but the problem still occurred. I went to the car service, and they told me the heater was the one causing problems. I switched it, and everything was fine from then on. I suggest you try the same thing.

 

Porsche was wise enough to use a Denso compressor which is an excellent Japanese unit. When it comes to A/C compressors, I never sell my customers rebuilt units. The failure rate is unacceptable to we professionals. My preference is to always go for new Denso when available. As I have said for years, "Do it once; get it over with"

Cliff

 

You have two options:

1. Purchase a Denso compressor from Griffiths (good choice).
2. Watch the video and then decide if you want to rebuild your compressor (buy the kit from Griffiths).

10P Video (Not 944 compressor but better detail)

10P15E Video (944 compressor)

Rebuilding is a challenge but can be done well if you take your time, keep things operating room clean, and can follow directions.
The quick route is to buy a Denso "rebuilt" and install it, either yourself or a repair facility.

Good luck either way.....

 

If I were you, I'd replace the compressor instead of looking for the exact location of the fluid leak.