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KJS
GenIII
 
6/13/2005
04:53:46
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 Subject: R-134a and compressed air
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Correct me if i'm wrong but doesn't R-134a (1,1,1,2 tetrafluoroethane) have the same ingredients as a simple can of compressed air that you use to blow off your computer, because if so i could get that stuff alot cheaper than a can of R-134a, anybody?
My truck looks like it was in a knife fight, and lost! http://www.cardomain.com/ride/1275365
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Bob Lincoln
Dodge Dakota
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6/13/2005
10:05:42
| RE: R-134a and compressed air
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Some of those sprays do contain R134a, but I think you'll find a 12-oz can of R134a is only about $7, whereas the air is probably $5. So why not use the right stuff?
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daddio
Dodge Dakota
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6/13/2005
10:53:55
| RE: R-134a and compressed air
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besides, how would you get that "canned air" from the can into the a/c system?????????
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Use your head
Dodge Dakota
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6/13/2005
15:34:15
| RE: R-134a and compressed air
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This question is soooo stupid. Does that mean the guy asking it is too?
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KJS
GenIII
6/13/2005
22:10:47
| RE: R-134a and compressed air
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Message:
O i'm sorry to have bothered you d!ck weed if you didn't like the question, then why the hell did you repond to it in the first place a$$ munch
"opinions are like a$$holes, everybodies got one"
My truck looks like it was in a knife fight, and lost! http://www.cardomain.com/ride/1275365
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Adam
Dodge Dakota
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6/14/2005
00:04:12
| RE: R-134a and compressed air
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U recharging ur A/C? I need to do the same thing but Ihave no idea what to do. And it's gonna start getting hot and I would realy enjoy being able to use my A/C.
'00 CC Sport 4x4 3.9 Tow Package
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Dan
Dodge Dakota
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6/14/2005
01:42:19
| RE: R-134a and compressed air
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R-134A is very different than the compressed air you get in a can. The properties of a regrigerant (R134A for examnple) make it able to be compressed and then to dissipate its heat. And then to require a large amount of heat to expand (hence the refrigeration cycle). Air will do this to an extent but nowhere near as effeciently (actually only a tiny amount).
Dan
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KJS
GenIII
6/14/2005
04:34:27
| RE: R-134a and compressed air
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Hi Adam, yes i have to recharge my a/c and i too do not know how to go about it, i was on a web site last night that was comparing R-134a to compressed canned air and pointed out that the ingredients were exactly the same but only the top end was different, the R-134a can had a female end wich the connecting hose plugs into and the compressed air can had a male end wich takes a trigger spray end nozzle, but if modified it could be used, my problem is that i discharged my system but i don't want to pay to have it vaccumed out, and i am worried that if i just add a can of R-134a the ac will either not work or screw up something up.
My truck looks like it was in a knife fight, and lost! http://www.cardomain.com/ride/1275365
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Bob Lincoln
Dodge Dakota
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6/14/2005
10:59:54
| RE: R-134a and compressed air
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It MUST be vacuumed out, or it will not cool nearly as well, and will suffer an early death, which is very expensive.
The compressed air in a can CONTAINS some R134a, but it's a small part of its content. As I said, R134a is cheap, why wouldn't you buy the right stuff? And why try to rig it to put the wrong stuff in?
Why was your system emptied to begin with? You need to verify that there are no leaks before refilling.
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slopehead
Dodge Dakota
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6/14/2005
17:09:25
| RE: R-134a and compressed air
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do not even think of using canned air to recharge the A/C. there is no oil in it and without replacing the oil that leaks out with the 134a your gonna tie up the A/C compressor.
you guys continually entertain me with your discussions of stupid ideas.
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99Dakspt
Dodge Dakota
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6/14/2005
17:49:23
| RE: R-134a and compressed air
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How long was the system open.? I bled mine off to install cam, lifters, timing chain, valve springs etc. It was open for a couple of days, I recharged with the proper amount of 134 without evacuating the system. It has been three years, the air is cold and there are no problems.
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Homer .S.
Dodge Dakota
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6/14/2005
19:04:29
| RE: R-134a and compressed air
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I'll be polite.......leave it to a pro!
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Bob Lincoln
Dodge Dakota
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6/14/2005
19:31:20
| RE: R-134a and compressed air
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"I recharged with the proper amount of 134 without evacuating the system."
You cannot recharge with the 'proper' amount if there is air (and MOISTURE!) in the system.
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Russ roulette
Dodge Dakota
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6/14/2005
19:32:47
| RE: R-134a and compressed air
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I pulled th trigger FIVE times with the gun to my head, and never blew it off.
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Big Ed
Dodge Dakota
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6/14/2005
20:48:53
| RE: R-134a and compressed air
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Sure u can bob, u feed refrigerant in the high side without it running till it comes out the low side. then shut the high side valve on your gauges, start the a/c and fill it till you have about a 35# back pressure. It works, but a good deep vacuum is always best.
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Bob Lincoln
Dodge Dakota
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6/15/2005
08:32:09
| RE: R-134a and compressed air
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That's a cheesy way to fill a system, and it still doesn't remove moisture, which is lethal to A/C systems. It also allows for excessive venting of R134a while filling.
Why are you so resistant to just doing what the factory recommends to service these systems?
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Dan M
Dodge Dakota
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6/15/2005
09:54:32
| RE: R-134a and compressed air
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Man what problems I have caused :)
I found a shop that will do just the vacuum for $37.50.
- Dan M
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Big Ed
Dodge Dakota
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6/15/2005
11:40:37
| RE: R-134a and compressed air
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Cool Beans Dan. good luck.
It is a cheesy way Bob, but the point is, it can be done and successfully. I'm not resistant, I do refrigeration the legal, safe way. I'm just stating that it can be done without vacuum. Especially on auto system.
PS, I don't believe anyone has been fined 10 grand for illegal venting although thats the stated fine.
also, if 134a is sooooo leathal, why can any joe blow buy it. You need at EPA cert. card for 22, 12 and other refrigerants. You also need a MACS card for small cans of 12. Amazing. More government red tape.
Again , Good luck Dan.
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Bob Lincoln
Dodge Dakota
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6/15/2005
12:42:01
| RE: R-134a and compressed air
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Well, it's a $25,000 fine, not $10,000, and your way is not legal.
No one said that R134a is lethal. But it is illegal to vent. It's easy to encourage someone else to take the risk when your neck is not on the line.
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99Dakspt
Dodge Dakota
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6/15/2005
17:19:55
| RE: R-134a and compressed air
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As stated it has been three years, still waiting for the thing keel over.
Bob you seem a bit anal retentive, you get worked up about A/C systems, cat converters among others.
Before you reply, I know you are trying to save us sapps from ourselves. I thought that was the government's job.
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Bob Lincoln
Dodge Dakota
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6/15/2005
17:48:09
| RE: R-134a and compressed air
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Nope, I'm just letting you know what the law is so when you crybabies get caught, you've got no reason to complain. If you don't like the laws, change them. But understand the risk when you break them. You can't have it both ways. Take responsibility for your actions. I don't have any use for pussies who get caught and then complain that they didn't know, or it's not fair.
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