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27-04-2005, 07:35 PM #1
Best compressor friendly replacement for R12?
Im in need of 3.75Lbs of *****. That will cost me more than my car is worth. My friend has a 100lb bottle of it, but hes not going cheap on it.
My car uses a six-piston pump with the pistons powered by a wobble plate on the shaft (the newer cylinder shaped pumps). These ones are known to die like flies when R134a is used.
Since I do not have a lisence to work with R12, and the cost of R12, I want an alternative. What will work best for maximum efficiency, and lowest compressor strain?
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27-04-2005, 08:26 PM #2
Re: Best compressor friendly replacement for R12?
try to import some R12 from Lebanon a 13.6 Kg cylinder will coast u about 45 USD here , cheers
Engineering, sciences, math, physics and my brain will generate "not responding " soon
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28-04-2005, 07:00 AM #3
Re: Best compressor friendly replacement for R12?
http://www.epa.gov/ozone/snap/refrig.../macssubs.html
remember only qualified licience holders are permitted to work on refrigeration/ac systems (but I'm sure you know and abide by this)
cheers
richard
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28-04-2005, 03:15 PM #4
Re: Best compressor friendly replacement for R12?
Get the same capacity compressor for R-134a.
Change the TEV, wash the system and you got a new AC for your car.
Too much for you?
Try Ebay, you can find just everything there.
Chemi
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28-04-2005, 04:10 PM #5
Re: Best compressor friendly replacement for R12?
The only reason I even considered R134a, is because I can replace the seals and old hoses myself. Its not so bad to pay 40-50$/lb for *****, but once you figure in paying a guy to hunt down the leaking seals, replace them, flush and evacuate the system... Its just not worth it.
My car is a 29yr old cadillac. The compressor is a good sized high volume one, estimated by my friend/mechanic to use 6-8hp to run.
I keep hearing about these R12 replacement refrigerants, which supposedly run at lower head pressure. I may have to get ahold of the more heavy-duty piston & crankshaft style pumps.
I may be able to have my friend order all of the hoses, gaskets and compressor seals, so I can replace all of the antique hoses, and pay him to flush, evacuate and recharge the system if I cant find an alternative. I just dont get why they wont let me buy R12 fittings and seals...
I will keep on researching the pressure charts for these "replacement refrigerants", and see how bad they are.
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28-04-2005, 07:11 PM #6
Re: Best compressor friendly replacement for R12?
Hi abcdefghij,
Now you're talking, How much do you want for the car?
If you can not afford it, don't do it.
If you want it to work, let a professional do it.
One more thing I can suggest you is to look for the parts at scrap yards, I'm sure you find good parts and cheep too.
Chemi
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28-04-2005, 08:17 PM #7
Re: Best compressor friendly replacement for R12?
Propane has +/- the same characteristics as R12 and is very cheap.
Don't worry about leaks around the engine. It will boost your CadillacLast edited by Peter_1; 28-04-2005 at 09:07 PM.
It's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt.
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28-04-2005, 08:23 PM #8
Re: Best compressor friendly replacement for R12?
can you get isceon 49 in your location?
cheers
eggs
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