upgrading AC system. Q?
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Treymen
Donating Member
Re: upgrading AC system. Q?
With a little customizing, this will fit. Updated gas, smaller and lighter, more efficient....http://www.vintageair.com/cat2007/52.pdf
With a little customizing, this will fit. Updated gas, smaller and lighter, more efficient....http://www.vintageair.com/cat2007/52.pdf
13Pelle
Active member
Re: upgrading AC system. Q?
There are "upgrade kits" or "retrofit kits" out there. I wasn't aware you had to change the o-rings out, unless they are obviously bad or you have disturbed a fitting.
There are "upgrade kits" or "retrofit kits" out there. I wasn't aware you had to change the o-rings out, unless they are obviously bad or you have disturbed a fitting.
HAMMERHEAD
Member
Re: upgrading AC system. Q?
Napa sell a substitute for R 12 called Freeze 12. It's about $9 a can and you do not need a license to buy it. It get as colder than the 134A and you do not need to change anything in your system
Napa sell a substitute for R 12 called Freeze 12. It's about $9 a can and you do not need a license to buy it. It get as colder than the 134A and you do not need to change anything in your system
13Pelle
Active member
Re: upgrading AC system. Q?
I was told you didn't have to unless they were already leaking or you disturbed a fitting.
The oil required for 134a reacts poorly with residues that cannot be flushed from a system that has run on R12. This reaction breaks down the oil and frequently destroys the compressor.
I was told you didn't have to unless they were already leaking or you disturbed a fitting.
The oil required for 134a reacts poorly with residues that cannot be flushed from a system that has run on R12. This reaction breaks down the oil and frequently destroys the compressor.
13Pelle
Active member
Re: upgrading AC system. Q?
"When R-134a was first introduced, it was thought that all non-barrier/nitrile hoses would have to be replaced during an a/c retrofit. Early laboratory tests showed that the small R-134a molecules leaked through the walls of non-barrier hoses more readily than the larger R-12 molecules did. In the lab, this caused unacceptably high leakage rates. More recent testing, however, has shown that oil used in automotive a/c systems is absorbed into the hose to create a natural barrier to R-134a permeation. In most cases, the R-12 system hoses will perform well, provided they are in good condition. "
"The amount of mineral oil that can safely remain in a system after retrofitting, without affecting performance, is still being debated. It was originally thought that any mineral oil left in the system might cause system failure. As long as the tech has removed as much of the old mineral oil as possible, any residual R-12 left in the system should not have a significant effect on the performance of the system. Removing the mineral oil may require draining certain components. Unless the vehicle manufacturer recommends flushing the system during the retrofit procedure, a service tech can assume that flushing is not necessary. (Although the SAE J1661 procedure for retrofit includes flushing, SAE no longer believes that flushing is critical to a successful retrofit.)"
"When R-134a was first introduced, it was thought that all non-barrier/nitrile hoses would have to be replaced during an a/c retrofit. Early laboratory tests showed that the small R-134a molecules leaked through the walls of non-barrier hoses more readily than the larger R-12 molecules did. In the lab, this caused unacceptably high leakage rates. More recent testing, however, has shown that oil used in automotive a/c systems is absorbed into the hose to create a natural barrier to R-134a permeation. In most cases, the R-12 system hoses will perform well, provided they are in good condition. "
"The amount of mineral oil that can safely remain in a system after retrofitting, without affecting performance, is still being debated. It was originally thought that any mineral oil left in the system might cause system failure. As long as the tech has removed as much of the old mineral oil as possible, any residual R-12 left in the system should not have a significant effect on the performance of the system. Removing the mineral oil may require draining certain components. Unless the vehicle manufacturer recommends flushing the system during the retrofit procedure, a service tech can assume that flushing is not necessary. (Although the SAE J1661 procedure for retrofit includes flushing, SAE no longer believes that flushing is critical to a successful retrofit.)"
gkrcr882
SyTyless......for now!
Re: upgrading AC system. Q?
Not everywhere...
"Refrigerant Sales Restrictions
Refrigerant sales in Wisconsin are restricted to licensed businesses. This applies to all refrigerants including R-134a, the common replacement refrigerant used in motor vehicle air conditioning viewed as non-ozone depleting.
The sale of small containers of refrigerant (containers holding less than 15 pounds) is also prohibited in Wisconsin. These are container sizes generally marketed to the do-it-yourselfer who are generally not trained nor equipped to properly service vehicle air conditioning and trailer refrigeration systems."
Not everywhere...
"Refrigerant Sales Restrictions
Refrigerant sales in Wisconsin are restricted to licensed businesses. This applies to all refrigerants including R-134a, the common replacement refrigerant used in motor vehicle air conditioning viewed as non-ozone depleting.
The sale of small containers of refrigerant (containers holding less than 15 pounds) is also prohibited in Wisconsin. These are container sizes generally marketed to the do-it-yourselfer who are generally not trained nor equipped to properly service vehicle air conditioning and trailer refrigeration systems."
V6 Kompressor
New member
Re: upgrading AC system. Q?
Usually I get a retrofit Kit that has the ester based oil in it. Usually runs around $40 US, includes 3 cans 134a, 1 can ester oil, retrofit fittings, sticker and a charging hose kit. http://shop.advanceautoparts.com/we...Interdynamics_9220004-P_N3571B_T|GRP2004A____