Mike10956 Posted May 18, 2019 Share Posted May 18, 2019 The aircon on my 1985 911 Carrera 2 hasn't worked properly for ages. When I asked a local specialist to recharge it he told me that it was originally filled with R12 gas. It is apparently illegal to use this now and the fittings for recharging it are different. I have been told if I get adaptors on e-bay they can charge it with the later gas 134 Although this has now been superseded you can still use it The Porsche manual says if you have lost gas you should replace the drier unit. The questions are Will the system work OK with 134 gas ? Where are the charging points ? Do I need to change the drier HELP !!! Link to comment Share on other sites More sharing options...
Roy M Posted May 18, 2019 Share Posted May 18, 2019 I thought the hoses were incompatible as well - they leak the more modern gases. To be honest your money may be better spent on one of Jonny's systems Link to comment Share on other sites More sharing options...
Mike10956 Posted May 18, 2019 Author Share Posted May 18, 2019 What are they ? and where do you get them ? Link to comment Share on other sites More sharing options...
Roy M Posted May 18, 2019 Share Posted May 18, 2019 Check out the classic retrofit website or look for electric air conditioning on here - Jonny Hart https://www.classicretrofit.com/collections/electric-air-conditioning Link to comment Share on other sites More sharing options...
Mike10956 Posted May 18, 2019 Author Share Posted May 18, 2019 Thank you Link to comment Share on other sites More sharing options...
Roy M Posted May 18, 2019 Share Posted May 18, 2019 Good luck with it. Cheers Roy Link to comment Share on other sites More sharing options...
Mike10956 Posted May 18, 2019 Author Share Posted May 18, 2019 Will let you all know how I get on with it. We are doing the Trois Epis Rally and Hillclimb in Alsace next month and it can get a bit warm and wet at this time of year Mike Link to comment Share on other sites More sharing options...
rubatoguy Posted June 29, 2019 Share Posted June 29, 2019 You can retrofit the 134 refrigerant on a 911 that originally used R12, but you will have to replace the hoses, dryer, and compressor oil. The R-12 hoses are semi-permiable and will allow refrigerant to escape. Using R134 will not provide as good cooling as with R12. Check out Griffiths https://griffiths.com/porsche/air-conditioning/911-930/ Link to comment Share on other sites More sharing options...
Jonny Hart Posted June 30, 2019 Share Posted June 30, 2019 Fixing old air con in my experience is a ‘chase your tail’ type job. All the components must be in good order for the system to function effectively. If the system doesn’t work due to failed compressor, then all the other components could be full of crap. Converting an R12 system to R134 also requires that all the o-rings are changed due to incompatibility with the oil. The old hoses are even less likely to hold R134 since it has smaller molecules. Our system is complete and every part is new. Make sure with other vendors that you are getting a full quote for everything as some of the website prices are for partial systems which is misleading. Link to comment Share on other sites More sharing options...
Jonny Hart Posted June 30, 2019 Share Posted June 30, 2019 Out and about yesterday... Link to comment Share on other sites More sharing options...
mean in green Posted June 30, 2019 Share Posted June 30, 2019 It doesn't get any less impressive Jonny, particularly for a car like a 911 with so much glass. Wonder how many factory systems would be able to match that... Link to comment Share on other sites More sharing options...
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