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So even if you had a 72 ac box the firewall would be different. The best way to approach it if you have the car that the 73 is going to come off of you could cut a piece of the 73 firewall to use as a template or weld it in place of the 72.. Some of the controls and dash switches will be...

A bodies were different both between AC and NON ac vehicles in the same year PLUS there were some pretty significant changes from 67-72 and 73-76. You didn't say whether the 72 had AC or not but there will be some differences in the firewall either way. Also, I THINK that 72 was the last year...

I found a pic of the one I sold on Ebay in 2005

Uh, ?? what's wrong with feeling the heater hoses and see if they are hot? Nothing, but it doesn't give you much info. Shutting down the flow can tell you if the ac system is working well without any additional hot water in the system. In the time it takes you to touch the hose, I can...

Here's a quick trick to check the Heater (water) control valve: Snap a pair of needle nose vice grips over the heater hose in front of the valve (pinching down on the hose thus closing it off) If the ac gets a whole lot colder, then you should replace the valve (Although I have driven half a...

You could go to the plumbing department at Lowes or Home Depot and buy a one or two inch steel pipe nipple threaded on both ends. Get the correct size to thread into the manifold and the threads on the other end will make the 5/8 hose fit much tighter than the stock nipples. You could also coat...

The easiest and IMHO best looking way to fake a passenger heater delete is to take a driver side and put it on the passenger side. The door will open on the wrong side, but you can open it being carefull getting your hand next to the kick panel. 99.9% of the people will never know. As I...

But does any know if they made a passenger side vent with out the heater box? This response is years late, but for information and the archives, the answer is YES and it's one of the rarest parts there is. In 25 years of selling parts, I've had ONE. I got it on a 67 Dart with factory heat...

I've always been a big block guy so I can only answer in those terms. On the 383-440, the non-ac pump had larger impellers but fewer of them. The ac pump had a much larger circle of blades but they were much shorter (I'll look and see if I can get pics). The idea was that the AC pump was...

BillGrissom;1970034241]As I recall my 69 Dart, the factory AC had just a thermo-mechanical expansion valve on the firewall. It had a "gas thermometer" that stuck in a well in the tube after the expansion valve, a thin copper tube like you see on older gas water heaters w/ continuous pilot flame...

I've got used ones laying around somewhere

The top one looks like an ac box and the bottom looks like a non ac. If so, they are always different.

If it's an AC heater box it definately will NOT fit. They changed from 72-73. I THINK the non ac might be different too, but I am not as certain of that.

Got it! Thanks Tony!

I sell a lot of them on Ebay. I'm not certain if it's "correct" but I hit them with flat black and then a semi-gloss clear coat. It gives them a good "not to shiny, not too flat" look.

IT'S COLD IN THERE! I put three 8 oz cans cans charge. It's 75 here now and it's cold. Will it be cold at 100 degrees? I don't know. Here's the final gauge readings engine at idle, ac on. I appreciate the help A LOT! Any ideas on those readings still appreciated. With AC, I'm like a 3 year old...

Ok, here's the new readings..would that indicate that I just need to charge it more? engine running:

Cool! We''ll reverse them and see what happens!

First pic is of gauge hookup: one fitting on the head of compressor-I have that as high. Other fitting on discharge hose to condensor.I have that as low. Is this backward?

At this point the only possible line restrictions would be the slight restriction in the evaporator (which I know about) or a bad or improperly installed new expansion valve. I have edited the above post to include pics of the gauge pressures.

I went outside this morning and the sun was shining right on the hood of the car, so it was perfect lighting for pictures and I got a great idea! You guys are all better than I at this, so here's some pics of the gauge setup, and closeups of the gauges both static and with the compressor...

Expansion valve is brand new. No Service Valves. Factory compressor. I was looking at the EPR valve in the shop manual. If/when I replace the compressor (perhaps next) It should have a new one! :)

Wow, I'm frustrated! I have a 72 Scamp with a slant. It's an ugly 4 door driver, but it HAS to have working ac. When I got it, some of the factory ac parts were missing and some were replaced with aftermarket and hose clamps, etc..it was a mess. I chased down all the correct hoses to and from...

First, I like to give a shout-out to Whitepunkonnitro for the great used AC hose..MUCH better than anything I had! Thanks,Tony! Ok, now I need to know if the rubber in the fitting that bolts to the compressor is a standard round "O ring" that gets crushed to look like this, or if I have...

A fairly simple test would be to install a manual shut-off valve in-line with a heater hose .. An even QUICKER test is a pair of needle-nose vice grips clamped on the heater hose for a couple of days. It's amazing how much cooler the car gets sometimes when you do that! (and yes, it indicates...

Some people "think" Freon is "safer" because Propane based refrigerants "explode." Those same people never consider the implications carrying around 25 gallons of high octane GASOLINE in your trunk! :) Duracool (Google it) is available mail order. It works VERY well as an R-12 replacement!

I need an AC discharge hose for my 72 Valiant with a slant. Mine has a splice with a hose clamp that I expect wont last very long! I can't get one made locally (for some reason they have a problem with the muffler). Several companies have offered to splice mine (which is marginal at best) for...

Also note that the AC box is different from 72 to 73. That's even ANOTHER different firewall configuration :(

Be warned in advance that if you convert to a non-ac heater box it will not bolt in without mods to the firewall! :(

It's a six cyl factory ac setup. It did not work when I got the car. It was not open however. It was an original r 12 system never upgraded. It was almost (but not completely) empty. I used the Duracool because it mixes with anything. With the compressor on and running (it IS turning) and the...