Can a R-12 car be converted to 134A?

Contrary to popular belief, most cars originally equipped with R-12 can be converted to 134a and still keep you just as cool. REPLACE REBUILD THE FILTER-DRIER This is a requirement any time the system is opened to the atmosphere, regardless of whether or not you’re converting to 134a.

Is there a plan to retrofit R-12 to 134A?

Since one would generally work on A/C units when the temp is higher, and the temps here are in the 30’s right now , I was going to replace parts, flush the A/C system, pull a vacuum on the system, place the oil charge in the system, and put it on hold till I get a warmer day to actually put the remaining R134A. Does this sound like a plan?

How much refrigerant does a R-12 compressor take?

The old R-12 system took 4.25 lbs , so I’m going to start with 3.75 lbs of R-134A But what about the refrigerant oil? My new 134A compressor came with a 3 oz. charge. My original service manual states that the factory compressor should have 10.5 oz of oil.

What’s the best way to charge an R134?

Lastly, with R134 it is better to charge based on pressure rather than weight. Use a good quality gauge set, start with a minimum charge and let the target pressure determine full charge based on the ambient temp when charging. More sharing options… Sounds like he is doing a partial charge, not a partial assembly.

How to convert auto R12 system to R134a?

Here’s how to convert R12 to R134a with the factory method 1) Discharge the R12 and recover the R12 for recycling. 2) Flush evaporator and condenser with AC flush kit to remove mineral oil 3) Flush AC high pressure and suction lines to remove mineral oil

Can a Mopar classic be converted to R134a?

Whether you need to convert a Ford, GM, or MOPAR classic from R12 to R134a, two helpful tips to keep in mind…. Ignore your sight-glass. A properly charged 134a system will likely show bubbles in the sight-glass. Typical 134a charge rate will be approximately 70-80% of the factory R12 charge amount.

Which is better R12 or R134A cooling system?

Since R134a is LIGHTER than R12, you must convert the charge weight to get the proper charge during your retrofit. Fill the system with 75 to 85% of the factory specified capacity to achieve the best cooling. Use this formula or the chart below.

Can a R-12 car be converted to 134A?