134A & PAG oil are not compatible with Ester oil, you'll plug up the system. When doing the conversion flush the entire system then install new orifice, drier/accumulator, compressor, condenser, and add 8oz PAG oil, suck it down to -29" for at least 1 hour (overnight is better) and shut off the vacuum pump and see if it holds vacuum.833 posts · Joined 2012. #8 · Jun 25, 2012. Even with R134a, you will need the newer hoses designed for R134a. The R12 hoses do leak out 134a. The 134a hoses are barrier type to prevent this. It has to do with the size of the 134a molecule vs R12. RRGrassi--1990 D250 5.9 Cummins Getrag 5 speed.Retrofitting AC systems is something that has been done for many years now. In 1996 systems were switched over to R134a from R12 refrigerant. R12 refrigerant...Converting your car AC R12 system to R134a can significantly improve your driving experience, especially during hot summer months. As outlined in this post, the four-step conversion process involves checking your car’s compatibility with R134a, replacing the compressor with a compatible model, and swapping out the receiver drier and expansion ...I just had a shop convert our 91 Integra. It was as simple as removing old R12 and oil, installing the $6 adapter kit and reinstalling r134, then putting the new retrofit sticker on-nothing else was changed. The adapter kit can be found at any auto store from $6-16 (I think it dropped in price to the lower price).You have no items in your shopping cart. 1-813-259-7688. 9:30am - 5:30pm ESTC4 Tech/Performance - A/C: Converting R12 to R134a?? - Two questions for anyone from the deep south (aka, warmer climate) who has converted a '92 or '93 C4 from R12 to R134a: 1) Does it cool as well -- especially in stop-and-go traffic on a 98 degree day. 2) Has anyone replaced the evaporator, condenser, compressor,...Law #3 - New vehicles built to run on R134A have a larger evaporator. Law # 4 - R134A - use 70-80% less by weight than R12. Can't know this without a full evac and proper equip. mmmmmm. law #5 - R134A requires higher pressure than R12 to Liquefy. mmmm How to do that with Law #4.R12 to R134 A High/Low AC Fitting Port Retrofit Conversion Adapter, Quick Coupler Valve A/C 90° Fitting, High and Low Side R-12 to R-134A Retrofit with 2PC Caps $11.99 $ 11 . 99 Get it as soon as Friday, Jun 7The molecules in the R134 refrigerant are smaller than the R12 molecules and will leak more easily through the walls of an R12 hose. It us suggested that R134 "barrier hoses" be used with this type of refrigerant. Rick. Sent from my SM-G965U using Tapatalk. 70 El Camino, 5.3L LS Engine, 4L60E Transmission.These charts show the conversion values from the original R12 charge to the new R134a charge. The conversion is determined by multiplying the R12 charge value by .75 (R12 charge x .75 = R134a charge). Scales that measure only in ¼ (.25) or ½ (.5) ounce increments - charge the system to the next highest quantity of R134a. EXAMPLE: Chart …News. R12 To R134a Conversion – How You Can Pull This Off? written by Jake Mann February 24, 2023. Are you running an old AC system and you are looking to …These charts show the conversion values from the original R12 charge to the new R134a charge. The conversion is determined by multiplying the R12 charge value by .75 (R12 charge x .75 = R134a charge). Scales that measure only in ¼ (.25) or ½ (.5) ounce increments - charge the system to the next highest quantity of R134a. EXAMPLE: Chart …R12 to R134a conversion. Hey guys. As the title explains, I want to convert my Miata to 134a due to how difficult it is to recharge and obtain r12, I understand that r12 may be better for cooling and all but I feel like in the long run the 134a will be better. My compressor is not working correctly so I have outsourced a 1997 compressor.I've succesfully used the r134a conversion kits on a few different r12 vehicles - no parts needed. I just evacuated all of the r12, then charged with the r134a conversion oil/freon paying attention to the amount of refrigerant the system wants (capacity usually in service manual).This is the hearsay in Michigan. Supposedly, the 134A has much smaller molecules than the R12. So small that the 134A will bleed through the lines that came with the R12. At this point, I know of 7 changeovers from R12 to 134A with no bleed through. The oldest is 2 1/2 years and the newest about 7 months. Evacuation is critical though.The refrigerate oil in the system has to be compatible with the freon used, so if a system is converted to 134a it needs the correct amount compatible oil added. Also 134a does not start cooling as quickly as 12. Freon 12 is probably still available, but it …This is Final video of the Ac conversion from R12 to R134a on my 1993 Chevy Silverado. Warning! Never Charge on the high side. When charging the high side on...R12, the AC works best with R12. If it is still cooling, I would use some gauges to measure the pressures. and add R12 until the pressures read correctly for the ambiant temperature. If the system needed major AC component replacement I would. consider converting to R134 but some articles mention that to.In 2000, I converted my 84. I installed a new compressor, orifice tube, and accumulator. I replaced all O rings and vacuumed the system. I then charged with PAG oil and 80% of R12 rating with R134A. I got 42-45 degrees at the vent in 100+ ambient temps. Not bad. I had to add 2 cans in the next 10 years I had the car.Features & Benefits. Warranty: Standard : Limited Lifetime. Download. Includes all parts needed for retrofitting. More cost effective than R12. Converting to R134 is less harmful for the environment. Compatible with all newer compressions. Compatible with all newer compressions.Depending on the vehicle, there are two ways to access the bolts for the torque converter. There will either be a cover or plate at the bottom of the bellhousing that conceals the ...Above poster said the "kits" suggest to not change mineral/R12 oil for converting to R134a. This is not correct, and can result in the formation halogenated acid (HF) from absorbed r12n the oil mixing with R134a. Converting to R134a from r12 protocol is strict flushing of the mineral oil, and replacing preferably with ester, as this absorbs ...The Charge: Bring the engine rpms up to a continuous 1200-1800 rpm. Begin to add refrigerant (if you have to) SLOWLY until you notice that the air at the vents is noticeably cooler than the ambient air, say at about 65-75 degs or so. At this point grab your garden hose and hose down the condenser; soak it once only.Bonus - no need to vacuum/dry the system or drain old oil. R12a is best filled at an atmospheric charge, works best in systems with a bit of moisture, and has far larger molecule size than R134a - minimizes leaks. Performance wise - it's close to R12, and quite a bit better than R134a. Lower head temperatures to boot.If you can't find one, I have seen a R-12 /R134a conversion kit (a connector with 7/16" R-12 on one side and the 13mm quick connect R-134a on the other) at the hardware store, you can get that and then a R-134 hose. Cut the hose and clamp it to the torch nozzle (see pic) and then into the cannister and the compressor.Change or restore the filter-drier. Drain the compressor oil and recharge with 134a compatible oil. (PAG or Ester Oil) Replace or restore all rubber hoses with barrier hose. Install 134a charge port adapters. Charge with 134a between 70-80% of the original R12 charge amount. Replace any o-rings with 134a compatible.Recently the owner of a '65 Mustang asked us how to convert his car's original compressor, converting from R12 to R134a refrigerant.The hoses used for R-12 can leak R-134a right through the rubber because the molecules are smaller. So, a switch to R-134a sometimes includes new "barrier" hoses. Unnecessary, though, because the lubricant that cycles through the system coats the inside of the hoses and prevents leaks.Here is a quick way to help you get started with the precise formula: R12 Charge Specification x 0.9) – 0.25 lbs. = R134a Charge Level. So, for instance, if the R12 charge specification is listed at 2 lbs., then the R134a charge level would be 2 lbs. x 0.9) – 0.25 lbs. = 1.55 lbs.R-134a with Sub-Zero synthetic A/C booster increases cooling capacity by improving lubricity, better heat exchange and overall better efficiency. Provides up to 18% colder air. Compatible with all PAG and Ester lubricants. Comes with a reusable recharge hose with in-line low-pressure gauge and range finder.1 hour. What You'll Need. R-12 to R-134a retrofit kit. A/C flush. Refrigerant oil. R-134a Refrigerant. Thermometer. Wrenches. Safety glasses. Gloves. Steps To Convert R-12 to R-134a. 1. Take the vehicle to a repair shop …We'll show you both a quick and dirty way, and a precise, more complicated formula for converting a Celsius temperature to Fahrenheit (and vice versa). Advertisement Depending on w...Simplifies conversion from the old R12 to newer 134a. (For more information on converting to 134a, click here.) Reduce horsepower draw. Reduce weight. NOTE: 1 . This kit will only work on vehicles that have a small block Chevy V8 with compressor mounted on the drivers side (left) of the vehicle and stock v belt setup.Re: Converting from R12 to R134. R134a usually performs about as well as R12. The high side pressures could be 10-20% higher than R12 depending on the condensor and fan capacity. Cars with undersized condensors and fans are the ones who will do the worst with R134a.The main thing when converting is to change the expansion valve out to one that is designed for R134a. Also if staying with R12 and replacing everything be sure you get one that is designed for R12. I think most being sold now are designed for R134a. Of course replace the receiver/dryer too and flush everything else and change all O-Rings.COnvert fittings to r134a ( if your machiner has the screw fittings you can go to autozone etc and get r134a fittings that screw right on. then vac again ADD OIL and recharge. Use about 80-85% as much r134 vs 100% r2 if that makes sense. Basically dont use as much r134 as you would if you were going to use r12.R12 to R134a Conversion Kit, 1Pair R12 to R134a Retrofit Adapters, R12 to R134A AC Retrofit Fitting Kit, R12 to R134a Convert Adapter, for Converting R12 R22 Service Port to R134a Service Port. 5.0 out of 5 stars. 2. $9.99 $ 9. 99. List: $13.99 $13.99. FREE delivery Wed, Jan 31 on $35 of items shipped by Amazon.A/C conversion. It's hard to do a detailed step by step on this. The biggest problem is the difference in the oils used in R12. and R134a systems. It's generally accepted that one cannot effectively remove. all the R12 mineral oil from a compressor that has run it. Same goes with the receiver/dryer.To convert R12 to R134a in your system there are only a few small changes you need to make to the system. The compressor that is used in your older R12 system luckily will still work R134a refrigerant and still be just as efficient. The condenser and evaporator are simply heat exchangers so they also do not need to be changed to run a …RED TEK 12a, as indicated and classified as a Hydrocarbon, is a highly refined product with a boiling point of -34.7 degrees C, at atmospheric pressure, and designed to be as close to the operating performance of R12 systems, but also in new systems as a direct replacement for R134a. The density of RED TEK 12a is significantly lower than R12.Installation video:Rspeed Miata R12 to R134 Air Conditioning A/C Conversion Retrofit Kit for 1990-93 MiataRspeed.netPart#: NAB-71450Product link: https://www...Classic Auto Air is your source for Model Specific A/C kits for 80’s & older Ford, GM, Mopar, Porsche, Custom Street Rods & more.Abesdub. 1269 posts · Joined 2016. #5 · Jun 1, 2017. It definitely is worth the conversion over to R-134a, the lowest it drops in temp is 45*F. I replaced the old R12 compressor with a gen3 R-134a compressor, new receiver/drier, new expansion valve, flushed condenser and evaporator with acetone to rid of most old mineral oil and filled with ...A couple tidbits learned from decades of converting old R12 vehicles to R134a: 1. PAG oil is only for vehicles which were factory R134a; I believe it's POE oil which is recommend for conversion vehicles (that's 99% of the 240s out there, 93 exception) 2. Replace every stinking O-ring with new..... leaking old O-rings will break your heart 3.Determine the amount of R-134a refrigerant needed to charge the system by subtracting 50 ml (1-2/3 oz) from the system's R-12 capacity. 8. Charge the system with the proper amount of R-134a refrigerant. 9. Start the engine and let it idle. Turn the A/C system on and off several times.Converting your car AC R12 system to R134a can significantly improve your driving experience, especially during hot summer months. As outlined in this post, the four-step conversion process involves checking your car’s compatibility with R134a, replacing the compressor with a compatible model, and swapping out the receiver drier and expansion ...Warranty: Standard : 1 Year or 20,000 Kilometers. Download. Includes all parts needed for retrofitting. More cost effective than R12. Converting to R134 is less harmful for the environment. Compatible with all newer compressions. Converting To R134 Is Less Harmful For The Environment.CORRECT CHARGE AMOUNT - The typical 134a charge of a factory R12 system is 70-80% of the original R12 charge amount. NOTE - Ignore the sight-glass. A properly charged 134a system will likely show bubbles in the sight-glass. If your sight-glass is clear with a 134a charge, the system is significantly overcharged.Certified A/C Pro R-12 to R-134a Retrofit Parts Kit with 3 Adapters is a R-12 to R-134a retrofit parts kit. Converts most R-12 to R-134a for pre-1976 vehicles and some late model imports. Includes 1 low side .44 inch valve 1 high side .38 inch valve 1 high side .44 inch valve high and low side caps EPA approved label and complete instructions.Nov 21, 2014 · Retrofitting AC systems is something that has been done for many years now. In 1996 systems were switched over to R134a from R12 refrigerant. R12 refrigerant...I'm doing a conversion from R12 to R134 on a 1982 Vette.I replaced the compressor ( new AC Delco), seals, hose assembly, and dryer. I had the condensor checked for leaks, resealed the heater b...It is illegal to convert an R12 or 134a system to 1234yf. The industry has no tests or published information to establish cooling performance, reliability, compatibility, or an assessment of chemical damage to a system’s lubricant seals and hoses. And the EPA has approved the new 1234yf refrigerant only for new vehicles with systems designed ...OS X: If you want to share a photo with a friend, but it's in a large file size format, it makes sense to convert it to a JPEG before sending it along. If you don't want to take th...Keep the original mineral oil refrigeration oil and run a b*u*s*t*a*r*d refrigerant like Freeze 12, or get all the mineral oil you can out of the system and install POE oil and R-134A, or COMPLETELY flush the system of mineral oil, replace the compressor and dryer, and install PAG oil and R-134A. The BEST and Deere-approved method is the latter ...1983-1993 A/C Conversion Kits: http://latemodelres.to/ACconversionKits_YouTube_____How To Charge Your Must...R134a systems use less refrigerant and more oil as compared to R12. The receiver/dryer should be replaced. If the new one has a sight glass, it'll be useless after the conversion, and the milky appearance is normal. It's normal for the cooling to be slightly less effective after the conversion.The reasonable way is to replace the R/D, blow out the oil in the condenser, replace with PAG oil, deep vacuum, then charge with R134. The problem is that R12 does not need as much compression as R134, so it wears the compressor faster and does not provide as efficient cooling. In the big picture, you are probably better off staying with R12.I have a 1991 Chevrolet K1500 which I want to convert from R-12 to R-134a as the A/C blows warm and the R12 is hard to service especially if dye needs to be added to source a leak which this truck may or may not have. I was told by a mechanic to convert it over to the newer freon as the dye he will add is only compatible with the R-134a.Re: Converting from R12 to R134. R134a usually performs about as well as R12. The high side pressures could be 10-20% higher than R12 depending on the condensor and fan capacity. Cars with undersized condensors and fans are the ones who will do the worst with R134a.Apr 14, 2013 · R134a refrigerant O-rings are of a different composition than those for R12 systems. R-12 O-rings are black in color. R-134a O-rings are blue or green in color. Ester oil charge for lubrication (amount varies by model year). You can also use PAG (Poly Alkylene Glycol) or Castrol Retro Oil for lubricant. R134a refrigerant (amount varies by model ...Jul 8, 2010. #4. proliane cooling and heat i believe is making the true multiple path condensers for our trucks now (81-87), would nicely compliment the r134a conversion and make it alot colder over the old r12 single path flow. I plan to install one whenever i get around to doing my ac, i have everything else.Then find some R12 - yes he recognized it is expensive - and fill the system with the R-12. He says the R134 builds too high pressure and the 40 year old systems cannot take the higher pressure. He says that 3 lbs of R12 is a lot cheaper than replacing the system, or major components. Ken.VIRTUS CONVERTIBLE & INCOME FUND II- Performance charts including intraday, historical charts and prices and keydata. Indices Commodities Currencies StocksRefrigerant Can Leak Easier. For starters, R12 systems and R134a systems are designed differently to accommodate the gaseous state of each. R134a systems work at higher discharge-side pressures than R12 systems, which could lead to compressor seals leaks. Additionally, since R134a is composed of much smaller molecules, it has a greater …Step 5. Step 5 requires connecting the high and low port adapters and recharging the air conditioning system with R134a refrigerant. After doing the final step, make sure that everything works well and you are good to go. That's how R12 to R134a conversion is done professionally.To convert your car's AC R12 system to R134a, only a few changes are needed, such as making the pressure ports, receiver drier, and pressure switches compatible with R-134a. To draw the refrigerant from the can, connect the blue hose to the low side port and open the system. Now below are some practical steps to convert R-12 to R-134a system.227 posts · Joined 2011. #8 · Apr 3, 2011. Yeah, California just switched from 134a to 134ca, which is the same thing, except instead of the puncture top, they are now self sealing tops, which require a special adapter which costs another $6, then you have an additional $10 core charge for each can, so that the state can reclaim the 8-10% ...An R134 conversion is a major undertaking requiring the whole system to be cleaned out and a different type of oil used. Its then quite likely to leak because , well read up on it, it just does! An alternative is to use a drop in replacement for R12 like RS24.Using the specs for the current system, multiply the R12 charge by 0.9 or 90% to determine the refrigerant capacity. From this number, subtract 1/4, or 0.25 pounds. R134a won't provide the same level of cooling as R12, though. You might find that the system doesn't get as cool even after properly charging it.R. RON19881212 Discussion starter. 7 posts · Joined 2017. #3 · Aug 31, 2017. Update, Hi, I realize now, that that condenser is a "Serpentine" condenser and that R134 will supposedly work 40% better with a "Parallel" condenser. Apparently Jeep switched over in 1997.If the charge calls for 1lb. of R12, you put in .8lb. of R134. If you end up with phantom leaks, it is more likely the service valve. Many of the conversion valves are prone to leakage. If a system will hold vacuum for 30 minutes without rising, it is very unlikely the system has a leak. Good luck.