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Freon

86.5 I think it is 2 lbs of r-12?

Anyone confirm?

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Old 04-11-2011, 07:40 AM
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Originally Posted by Fredfox View Post
86.5 I think it is 2 lbs of r-12?

Anyone confirm?
where do you get r-12?
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Old 04-11-2011, 08:53 AM
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I'd like to know that, too!
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Old 04-11-2011, 09:00 AM
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I think Kyushu's power plant may have some spent, i mean spare R-12 hanging around right now.
Old 04-11-2011, 10:30 AM
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I always have some around.
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Old 04-11-2011, 11:39 AM
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You just like to keep it handy in your back pocket or what?
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1978 Porsche 928 Euro 5spd. Silver metallic/Black
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Owning a 928 is risky business - but sometimes you just gotta say "what the fudge".
Old 04-11-2011, 12:03 PM
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Originally Posted by riber.bentsen View Post
You just like to keep it handy in your back pocket or what?
R12 not as easily had here in the USA. EPA stuff and all. Most Auto places carry the R134a stuff.
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Old 04-11-2011, 12:31 PM
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R12 not as easily had here in the USA. EPA stuff and all. Most Auto places carry the R134a stuff.
Oh it is the same in Europe. EU has completely banned R12!
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Owning a 928 is risky business - but sometimes you just gotta say "what the fudge".
Old 04-11-2011, 01:00 PM
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R-12 vs. Freeze 12

Hey Fredfox, I do not think 2 lb’s will be adequate to provide a full charge for your A/C system. There are actually several things (like condenser/evaporator volume, hose length/diameter, compressor design, type of Freon(molecule size) used and outside temperature) to consider. Although most automotive A/C systems are generally designed to hold a targeted volume in pounds, this is often just a approximation. For example - Freon was originally sold in the U.S. with 16 oz or 1/lb in small cans when our 928’s were built but today the single can of Freon is often about 12 oz. It is best to watch your high/low system pressures as the Freon is being filled. I normally service my A/C systems from a 30/lb bottle.

In the U.S., I have seen some of the remaining available R-12 sell for as much as $50/lb. There are a few questionable sources from Mexico for $30/lb but this Freon is often of very poor quality and heavily contaminated with various metals.

You should look for an R-12 Freon replacement called Freeze 12. I have used Freeze 12 (fed-environmentally approved) very successfully as a direct replacement ever since R-12 began to be eliminated from the market. What is great for owners of older cars is that Freeze 12 is compatible with the R-12 compressor oil and often sells for around $12 - $15 a can. Naturally, it is best to change out all your hose/connection seals then pull your system down using a vacuum pump to verify that your car has a tight system. Then, if your original compressor is in good condition, replace the drier, make sure you can hold a static 29 inch vacuum for at least 30 minutes, charge everything up with Freeze 12 and you will be traveling in comfort this summer.

Good Luck, Michael
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Last edited by JK McDonald; 04-12-2011 at 02:00 AM..
Old 04-11-2011, 01:04 PM
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i just did the conversion,,, new reciever dryer for $80 on ebay , i dropped the compressor poured in the 134 oil i think it was a half pint , changed the o rings ,, use the green ones only,a couple of new fittings that go over the r-12 fittings one on the reciever dryer high side,one on the line under the rad hose low side, and a vac n charge of 134 and im chillin like a villan looking for r-12 is a headache and they outlawed it for a good reason go green
Old 04-11-2011, 06:54 PM
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r12can be easily bought on fleabay.

I've got 2 older 12oz. cans sitting around here somwhere. I think the've got rusty tops but you just buff them with some emery cloth and drop them in. I don't need them anymore as I've got a 30lb. can.
Old 04-11-2011, 07:46 PM
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Quote:
Originally Posted by bluemane500 View Post
looking for r-12 is a headache and they outlawed it for a good reason go green
Was it outlawed for a good reason? Usually stuff gets outlawed because a few congressmen invest in r134a plants I wonder about a lot of stuff that's "green" (I'm not against it, just skeptical) Kinda like, we are supposed to use florescent bulbs because the burn less energy and we completely ignore the fact that on a large scale the pose a mercury issue.
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Old 04-11-2011, 08:06 PM
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Sticker on my '86.5 says 42.3oz. Mine does have rear a/c. I'm happ now tat is have about 80 lbs. of r-12 still. It is like gold! If yours also has rear a/c when filing make sure the rear is running as you fill. If not you may end up a bit short and notice the lack when rear is used (it will be very cold, but front will suffer) Charging by can is a guess at best. I use digital scales and add exact amount needed. With cans (I believe most are 12 oz.)you will need about 3 1/2 cans.

As an aside, I have heard there may be a ban coming to 134. Anyone else heard such a thing? I believe it is now suggested to go with a self contained all hard line system. Something like in house hold use, with higher pressures (requiring more energy to run compressor and some loss in cooling effect. Also have heard that 134 is not good for environment and that r-12 may not have been as bad as media put out. (conspiracy nuts I am sure)
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Old 04-11-2011, 09:36 PM
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Should have mentioned I also have used a product called auto frost. used it for testing in my '81 for leaks and used it in car for 3 1/2 years until condensor got a leak and needed replacing (then charged with r-12) Surprisingly this product was as cold (if not colder) than r-12 and produced lower pressures.
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Old 04-11-2011, 09:41 PM
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Quote:
Originally Posted by joejoe1 View Post
Sticker on my '86.5 says 42.3oz. Mine does have rear a/c. I'm happ now tat is have about 80 lbs. of r-12 still. It is like gold! If yours also has rear a/c when filing make sure the rear is running as you fill. If not you may end up a bit short and notice the lack when rear is used (it will be very cold, but front will suffer) Charging by can is a guess at best. I use digital scales and add exact amount needed. With cans (I believe most are 12 oz.)you will need about 3 1/2 cans.

As an aside, I have heard there may be a ban coming to 134. Anyone else heard such a thing? I believe it is now suggested to go with a self contained all hard line system. Something like in house hold use, with higher pressures (requiring more energy to run compressor and some loss in cooling effect. Also have heard that 134 is not good for environment and that r-12 may not have been as bad as media put out. (conspiracy nuts I am sure)
134 is on the chopping block also.

Unfortunatley I have about 120 LB of 12.
It came off a supply vessel from the gulf. one big bottle resembles an acetylene bottle.
I use a digital scale under the bottle so I can track how much goes in.
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Old 04-12-2011, 07:35 AM
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Originally Posted by Pete R View Post
Was it outlawed for a good reason? Usually stuff gets outlawed because a few congressmen invest in r134a plants I wonder about a lot of stuff that's "green" (I'm not against it, just skeptical) Kinda like, we are supposed to use florescent bulbs because the burn less energy and we completely ignore the fact that on a large scale the pose a mercury issue.
I think it was outlawed because of damage (hole) in the Ozone layer we don't seem to hear anything about any more. Did the big hole disappear or something??
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Old 04-12-2011, 09:17 AM
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Nah, focus is now on us all getting Cancer from the Japan Nuclear Disaster. A hole in the ozone layer isn't going to matter if we all die from Cancer anyways

The level is now Chernobyl levels. Not good. Not good at all
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Old 04-12-2011, 09:20 AM
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Originally Posted by harborman View Post
I think it was outlawed because of damage (hole) in the Ozone layer we don't seem to hear anything about any more. Did the big hole disappear or something??
Im sure with the election around the corner we will start hearing about every single problem.
Old 04-12-2011, 01:55 PM
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Im sure with the election around the corner we will start hearing about every single problem.
Politics is Pathetic, isn't it?
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Old 04-12-2011, 01:56 PM
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It's sad that they can't get anything done.

Old 04-12-2011, 02:25 PM
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