I have the Gen II compac in my 53 and am very pleased with it. I wonder how one would introduce outside air to any aftermarket unit? You are right Tacson, go as big as you can. Joe

 

Joe, I've heard that some people leave the vents on the side of the cowl uncovered to provide circulation in addition to the pop-up in the front. I think this would just make it harder for the A/C unit to put out cold air. How's the weather in OK? I heard mother nature was trying to blow you guys into Minnesota! Jag

 

Your right about the weather Jag, we have had about six inches of rain at our place the past few days. Better than the drought we were in last year. I don't understand the introduction of outside air into the heat and air unit. I am not saying that is wrong, just that I can't quite comprehend it. I do remember cracking the windows in my VW bug many years ago to get more heat out of the heater, I assumed that was due to simply transfering the air, more out, more in. Don't see how that applys to A/C. Joe

 

The inlet on the A/C unit is situated on the back. (Near the louvers in the cowl) The A/C fan blows air out the vents and warmer air flows in the inlets to replace it. Some people prefer outside air because it is "fresh" air. I look at it as "HOT" air. The A/C unit only has a limited ability to cool the air entering the back by XX degrees. Suppose the unit has the ability to reduce the air entering the unit by 15 degrees... If the air coming from outside is 90* then the air being provided out of the vents would be 75*. I like the air to be recirculated so that it gradually decreases to meat locker level. 60* in and 45* is good. Mine is feable on the blower end. The air is cold but the amount is too little. So I just drive around with the windows up acting like the A/C works well!! Jag

 

Every instruction sheet with any unit I have used says to make sure you have eliminated all sources of outside air prior to intalling unit. I know that late model vehicles incorporate that feature but I assumed it was just so they could have a fresh air option on the heat/air controls. I am just so glad that the Vintage Air unit in my 53 works so good. I am using the same unit in my 40 coupe and am anxious to se if it does the same. hey Jag, while I am thinking of it, did you change your user name way back when? Joe

 

That is my problem Jag with my OLD AIR unit. It gets somewhat cold 47 but the volume/force from the vents thru out the cab is very Feable, very feable.

 

I recently installed a unit that I got from MustangsUnlimited.com, it's their "daily driver" model, underdash a/c only. Very similar to the dealer installed a/c from the 60's and so far have been very happy with it. We'll see how well it works here in GA in August!

 

That is really a more effecient a/c unit I would think The flex hose obviously reduces flow to the vents. Although my VA unit seems to overcome it well. I was tempted to go with that style of unit myself on my 53 Doug. Bet yours works well. OT somewhat, but I bought a 65 Mustang new. the A/C worked pretty well it seems, but the old York compressor vibrated big time. Ford had several additions to supposedly eliminate it, but never did all the way. I assume you are using rotary compressor, I sure hope you are. Joe

 

Yes, a modern Sanden compressor, R-134a. It has been dubbed "The Super Chilly" by my wife. As in, "Turn on the Super Chilly, it's hot in here!"
I was amazed at the ease of installation of the package. I did have to fabricate a small brace for the forward compressor bracket just to stop some vibration. I'm not sure if there was something missing from the kit or if I did something wrong with the install, but for the money it was a great deal, and works well too!