Registered
Join Date: Aug 2005
Location: Albuquerque, NM
Posts: 261
|
I did it too...Pro Cooler Mod for my A/C
So, I'm a newbie to this forum but have been reading it since I purchased my 1974 Turbo Style 911 a couple of months back.
Mine is a beautiful white, wide body, 911 coupe with a new 2.7 litre engine, transmission, power windows, power locks, alarm, new interior and exterior. This car was a steel. However, I was not so pleased with the A/C when I brought it back from San Jose, CA. I had asked the guy I bought it from if the A/C worked and he said yes, I turned it on and it blew cool...but not cold. In San Jose, this was not a huge issue I guess. So when I was driving it through the desert to my home in Albuquerque, NM (also the desert) I found out how cool it really blew...and let me say, it really blew...not so good.
When I got it home the first thing I had done to get it raised about an inch. It was so low that the front tire rubbed against the A/C receiver/dryer when I made a right hand turn. The next thing I did was read all the forums here and other sites in reference to the A/C systems for the Porche 911's and found alot of information. Much of it said that the only way the A/C systems would work is if you have (2) condensers or more and change out all the existing components for hybrid components. My pocket book was feeling the pain...so I opted for a compromise with the option to upgrade the system one component at a time until I was happy with the outcome.
The car was equipped with an after market A/C. It had an original York compressor, an aftermarket evaporator coil...VW COOOL, a standard receiver/dryer in the right wheel well and one condenser mounted on the rear deck above the engine. So now being exposed to mechanical systems...working in the engineering field I started asking some questions about the existing components on my car. The first is "was the evaporator large enough?" Mine was about 2" deep and about 8"x12". Everyone said yes, and it worked. It's motor blows three speeds. So I Pulled it out, cleaned it made sure the carpet didn't cover the coil and put it back. Next I installed (2) two electric fans in the tail on top of the condenser coil blowing into the engine compartment and blowing across the condenser coil and hooked in a relay so that they turned on when the clutch engaged on the compressor. (worked great)...still the air was hot and my York compressor was not holding the cahrge for more than a few weeks. I did not add another condenser coil as the hoses were already long enough and I didn't want to install more stuff on the car. Next I removed the York compressor and installed a new Sanden 507 and a Pro-Cooler by Rennaire. Only three items were purchased...A pair of electrical fans, the Sanden compressor and the Pro-Cooler. Everything else stayed the same in it's original configuration.
My installation did not go per plan because of my aftermarket A/C, but I managed. I took it to my mechanic for a vacuum test and some minor A/C hose modifications and then charging.....and the outcome.....it blows sooooo coooold. Outside temps at 97 to 100 degrees F and the inside temp somewhere between 115 and 125 degrees, turn it on and within 5 minutes I have to switch it to low. It's awesome. The car always runs just a hair under 250 degrees in this heat...and the electric fans I installed really helped the engine heat as well, dropping it to just about 210 degrees....
That's my story....any questions??
Last edited by Elu; 08-09-2005 at 06:33 AM..
|