Grab another cup of coffee and find a comfortable chair, you're going to be there for a while:

http://forums.pelicanparts.com/porsche-911-technical-forum/364796-ultimate-ac-thread.html

Mike,

Believe me there's a lot of ways to conquer the inadequate air conditioning system of our cars, it just depends on how much time and money you want to throw at it.

Here's what I did... Pelican Technical Article: 1984 911 AC Upgrade

I hear you Mark!

Mitch - nice write up...this is a good read - thanks.

Mike

Another thing you may want to consider is adding a fan to the oil cooler in the front fenderwell. The AC condensor in the rear decklid dumps its heat into the engine bay so anything that helps removing heat is a plus.

I know my engine temps would get a quite a bit higher with the AC running before I added the fan. After adding the fan the needle never goes above about 9 o'clock on the temp gauge even in 100+ city driving temps.

Oil Cooler Fan...
 

BP, Is that fan switched manually or by a thermostat controlled switch? Do you have any pixs and mounting information. Great idea... I guess if you did a search there's already information that's been posted on the subject?

What kind of a fan (size & CFM rating?) did you install? I have a manual override switch on my factory carrera front fender oil cooler fan but I really don't see that much of an impact switching it on in traffic. I think the factory fan may be a little puny on CFM vs a Spal replacement.

I actually see more of an impact revving the engine and keeping the RPM's at 2,000+ which really moves air across the engine oil cooler - I can see the needle start to drop.

I installed the fan that Elephant Racing sells, along with the aftermarket installation kit. It's not a SPAL but its very similar and rated at 800 cfm.

ELEPHANT RACING Oil Cooler Fans

The install kit is pretty slick. It comes with a relay and fuse holder and an adjustable thermostat. I really liked the thermostat feature. It has a probe that you inert into the fins on the oil cooler and the controller mounts in the trunk. You can set it to switch the fan on anywhere from 170 to 210. So no need to add an on/off switch on the dash. I installed it about 3 years ago and it still works like a charm.

The install was pretty straightforward, the tricky part is getting the clearance so you have to move the horns and ideally source the shortened upper mounting bracket. I couldn't find one at the time so I just made one out fo some scrap metal. I think I have some pics somewhere, but its been awhile. I'll have to see if I can dig them up.

BP,

I assume this fan set up is only for the radiator oil coolers and not the trombone style?

The installation is designed so that the fan mounts to directly onto the Carrera cooler. With a trombone style you would have to rig up some type of bracket to hold the fan I would think.