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Join Date: Dec 2005
Location: Pine Mountain Georgia
Posts: 844
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A/c
The a/c on my 75, 911 was not working so I decided to vacuum it down and add some freeze12. All was going well until I started adding the second can. Blew a hose up by the right front tire. All pressures were OK at the time. Weak hose I guess. Question to ya'll is would you spend 1300.00 to replace everything and just be done with it? I have been looking at the kit which promises 35 to 38 degree air. I have the Sanden 508 compressor, which is still set up for R-12. Thanks for any help. Spence
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1990 Wanderlodge PT-40 75 911S Silver Anniversary 1952 MGTD 1983 Mercedes 300 TD 1969 Lincoln |
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08-03-2006, 03:43 PM
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I used a kit from Retroair.com that included rear multiflow condenser, serpentine evaporator, drier and hoses -- everything but compressor for about that cost. With R134a my AC cools as well as any car out there. I was getting 36 degrees out the center vent when it was over 105 in Dallas.
I installed the parts but had a fellow Porsche owner who had some significant professional AC experience do the system evacuation and charging. I credit that for why the system works so well in equal part to the high-efficiency new parts and meticulous installation.
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John 2005 997 Carrera S -- Artic Silver/Sea Blue Former friends: 1989 930 factory Slantnose / 1998 C4S Coupe / 1973.5 911T / 1976 914 2.0 |
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08-03-2006, 04:12 PM
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Join Date: Mar 2005
Location: Tucson
Posts: 914
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Yup, in fact I'm in the process of installing Rennaire's kit with the procooler. Came with a new compressor, hoses, evaporator, expansion valve, reciever/dryer/procooler and all the hardware. There's quite a few on this board who have had good results improving their systems with kits from Rennaire & Griffiths. So a good working AC system is possible.
The real question is how much are you willing to pay for a system that works.
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1986 Carrera Coupe 1999 Chevy Tahoe 1987 Chevy Blazer 1955 Chevy Apache 3100 Pickup "A little knowledge is a dangerous thing" |
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08-03-2006, 04:21 PM
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Join Date: Oct 2005
Location: Niceville Florida
Posts: 274
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Re: A/c
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08-03-2006, 04:21 PM
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Join Date: Mar 2005
Location: Northern CA
Posts: 4,703
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I'm in a similar boat.. got R12 with components that seem to work ok...when the juice hasn't leaked out. Car is 89 3.2
want to switch to 134 but not sure if go with just hoses and new r/d or do nothing but clean out pump down, new r/d and refill I figure all the labor/etc. could be wasted if not installed properly and I have to clean out or add better components and refill all over again even if it is 134. I'm thinking of calling Retroair and maybe Rennair and see what they say on the phone.... I'm not finding shops up in Northern California that are 911 134a change experts or really know what they are doing for AC. I guess I'll be mulling this over for awhile more. |
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08-04-2006, 01:53 PM
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Note that Pelican Parts now sells RennAire products. The complete line-up is found in the 911 (1965-73) and 911 (1974-89) A/C sections.
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08-04-2006, 02:08 PM
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MAGA
Join Date: May 2004
Posts: 10,781
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I don't really feel like getting in a big arguement, but here is a link to my DIY AC repair and 134 conversion that has lasted for a year and still works fine without requiring a recharge yet. I drove it today in 90 deg temps and it still is working fine (it is even an old original York!).
IT CAN BE DONE, but you need to have an understanding of what you are doing.DIY 134 conversion in SC complete!
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German autos: '79 911 SC, '87 951, '03 330i, '08 Cayenne, '13 Cayenne 0% Liberal Men do not quit playing because they get old.... They get old because they quit playing. |
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08-04-2006, 02:13 PM
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I just had the RennAire front condenser installed; I already had the evaporater and ProCooler. The uprated nose condenser was the perfect finishing touch. I'm getting super fast cooldown, and cold AC putput. I had been having a problem with pinging when using the AC on hot days on hills or in the mid range under load. That has gone away, and the engine runs MUCH better when in use on hot days. The condenser throws out a lot of heat, so I prefer beefing up the nose condenser rather than the decklid one, because of increased intake air temps from the decklid condenser.
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86 Carrera, black on black, 16x7-8 Fuchs, SW chip, front & rear spoilers, Siene shift, pro-cooler |
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08-04-2006, 02:23 PM
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Join Date: Mar 2005
Location: Northern CA
Posts: 4,703
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just got car back from AC specialist in Campbell CA. Bill Auto Electric.
Anyway he recommended no conversion that if all the parts are working ok...just recharge with R12 at I forgot to look $60/lb. So he did the full standard AC service and found the juice low... so we will be checking over time to find the leak and fix....so far so good. Just didn't want to get into a whole engineering thing with no 911 conversion experts in the area... and also see if I can put it off for another year or so... it's not that hot around here anyway except for some trips to Thunder Hill
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Sold: 1989 3.2 coupe, 112k miles |
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08-15-2006, 05:25 PM
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1971 Porsche 911E
