What was the 1st year A/C systems actually worked
 

I was wondering if you guys know in what model did the A/C system in the 911 actually start to work? Don't even bother in replying if you live in Wyoming or some other state where your summers are a joke.

I live in Arizona where the temps regularly hit above 110 in the summer, so you southwestern states go ahead and chime in.

Thanks,

993 is what I'd say.

I'd also say 993 (1995).

Demanding but perhaps true..

I am however rather pleased with the A/C in my ´85 Carrera.

996 is what I'd say
none air cooled car has a great A/C

So the A/Cs in the 964s stunk as well?

I wish that the 87 - 89 carrerar's had good A/C, my SCs A/C stinks and I even have fans on the condensor, updated rotary compressor, and a procooler, all a waste of money in my opinion!!!!!!!

Some say the 964 had the modern ac

The vent addition was in '86 so you could probably add that year...but they still left much to be desired.

I dunno, maybe 2006?

I sold my mid-year S and bought a '90 only so I could have air in Atlanta. It works great.

I owned 2 993s and neither of them had really good AC. On hot days if the car had been sitting in the sun the AC could not cool the car to my hot blooded satisfaction. GM's AC works well and the AC in my BMW 3 series gets really cold (that large center vent is magnificient engineering).
My 83 SC AC is a joke, the vents couldn't be any smaller, what were they thinking?

110 ? I'd wait till I got the chance to test the 997's I think even the 996's were marginal for that sort of heat. Try and find a light interior. The 993's and marginally better than the 964's the 964's marginally better than the 911's.

I don't know about 110 degrees but in 93 degree temps during an L.A. trip last summer, my 87 A/C was nice and cool. The P.O had replaced the compressor (nippodenso) about 4 years ago.

Only trouble now is that since last year the last critical bits of freon has leaked out and I now need a recharge.

Question please:
Is a nippodenso condensor a typical replacement for the a stock compressor? Or is it a POS? Seemed to work fine until the leak out.

Rod,

See the following link, basically I added a fan on the deck condenser and an additional condenser w/fan behind the rear wheel, charged with R-12 and am good to go. Not blowing ice cubes but close.

I can show you what I've got if you are interested.

http://forums.pelicanparts.com/showthread.php?threadid=176468&highlight=griffiths +condenser

Re: What was the 1st year A/C systems actually worked
 

Still waiting for PORSCHE to make a car with a decent A/C that is not a SUV.

I'm in Tucson as well and since I bought my '86 coupe last February this
is my first experience with 911 AC in the summer. A week or so ago when it hit 107 it did marginally OK until I got stuck in traffic. Then the
AC was still not bad but the oil temp started rising. When the needle
hit the second white line on the gauge I shut it off not wanting to risk
getting closer to the red. (Anybody know what temps those lines
correspond to?) Even after shutting down the AC the temp stayed at the
second white line & didn't drop back down until I started moving again.

As far as I can tell the system is totally stock so I'm thinking with a
few upgrades, like a procooler maybe, it could be made to actually work
reasonably well. That might need to include some oil cooling upgrades.

Barrpete,

Does your car have a fan on the oil cooler, I think the fan was added in 1987 though you do have the better oil cooler, if not it would be a good idea to add one.

As for the gauge marks,
- first lower white block...60 degC ( 140 degF)
- next white line up.........90 degC ( 194 degF)
- next white line up........120 degC( 248 degF)
-bottom of next-up red block...150 degC (302 degF)
if you look at the gauge face at at angle you'll see the celsius numbers next to the lines

what a bunch of poppycock. I know damm well that if my 964 AC actually worked it would kick @ss.

964 and 993 have the same HVAC system.


In '86, it became marginally usefull. Then in '90 it became usefull. The 996 and newer are a no excuses set-up.

My '79 blows colder than my wife's '05 Denali... and that's down here in San Antonio. I rarely have to turn it to the highest setting, and it usually stays at the lowest.

I have a sanden style compressor, fan on the rear deck condenser, additional center vent and a huge under-belly condenser. It works!

- Skip

This...is the best question of the day.

Bill,

Thanks for the info on the temps. No fan on the oil cooler. I believe you're right about it being added in 87. Is it a big deal to add one?

And there is your answer.................

See the Tech Article below. You already have the cooler so adding the fan should be fairly easy. Does the car cool down once you are out of stop and go? Any chance you have a clogged cat convertor?

http://www.pelicanparts.com/techarticles/911_carrera_oil_cooler/911_carrera_oil_cooler.htm

I'm not a big fan of the under-belly condenser for this area given that the temp of the asphalt in the summer is in the 120~140 deg F range. For stop and go traffic an active condenser is needed along with R-12 charge.

Yeah, it took a few miles but once I started moving again the temp dropped down to just above the first line. About 200 degF I guess.

No clue about a clogged cat. How would I tell? Seems to run fine and passed emissions back in Feb with flying colors.

I have a 964, and I live in Texas. And I can say that the AC sucks!!!!

I'm happy with my AC in my 83SC but this is after replacing all rubber hoses with barrier type,receiver drier change and adding a underbelly condensor and a rear quarter panel fan assisted condensor. I am running HC12 which is a R12 replacement and it cools nicely. I also have a Griffiths Kool vent which replaces the bow tie. I do agree that the underbelly only works well while moving but anything over 10 mph and you can feel the difference. I am still trying to figure out how to get more air volume, the air is now cool enough but I would like to increase the air volume.

more air volume is going to mean a more powerful fan associated with the evaporator..this is one area i have heard nothing that i can recall about upgrades for..

skip,
did you cut the airbox on your '79 with cis to fit the condenser fan..or did u buy an aftermarket, low profile condenser? got pics if you did anything unique? i really think this mod is the only kind to solve the 'stop and go traffic' problem.
ryan

Lived in Tucson for two years. Track season is late Oct - April, which is nice and long. Enjoy your Porsche during those months. Good luck staying cool in any vehicle from May - Sept.

If you have to drive the Porsche May-Sept, get up early and be home by 10 am :)

There is a reason that half the population of the town leaves for the summer months.

If you want to stay cool during the summer, sell you Porsche and build a swimming pool.

Those of us in Tucson during the summer think it's great when all those weenies leave. Problem is they keep coming back in the winter!http://www.pelicanparts.com/support/smileys/sunny.gif

Well, there is a lot less traffic isn't there? :)

"89...964 series. I rode in a friend of mine's 964 in Dallas a few summer afternoons and it seemed to work great. MUCH better than my '88.

Re: What was the 1st year A/C systems actually worked
 

Living in AZ I know how you need great ac. I know that 964s ac blows cold even on the hottest day and the 993 is just that much better.

do 964's and 993's have electric fan cooled condensers? or is the system fairly similar to the older generation - working best while moving? i know they have barrier hoses, especially the latter cars..what about the design? where did they make the improvements?
ryan