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