Can you replace R12 with R134?

R134a systems operate at higher discharge-side pressures than R12, which can cause compressor seals to leak. Bottom line, R134a simply doesn’t cool as well as R12. The advantage of ester oil is that it works with both R12 as well as R134a, so you can fill the system with it and then use either refrigerant.

When did the Lincoln Mk VII LSC come out?

The LSC and SE used this engine from 1988-’92, and 1990-up designer (i.e., Bill Blass) models used this engine as well. Any Mk VII so equipped will have a letter E in the eighth place in its VIN. This 1991 SE features the later-style instrument panel; all MK VIIs received the new style in 1990.

What kind of suspension does a Lincoln LSC have?

Radical even in plush Blass and Versace variants, the LSC–short for Lincoln Sport Coupe–tightened up the suspension, rode the same blackwall Goodyears as the Camaro Z28, largely dispensed with the chrome, and brought in a sporting pretext (despite making just 130hp from the 5.0L V-8).

Where does the letter E go on a Lincoln Mk VII?

Any Mk VII so equipped will have a letter E in the eighth place in its VIN. This 1991 SE features the later-style instrument panel; all MK VIIs received the new style in 1990. It’s elegant, comfortable and sporty all at once-a rare blend to get right.

What makes a Lincoln Mk VII soft ride?

The microprocessor regulates the spring’s pressure (from 75-100 PSI) according to three sensors: one at each front control arm, and another on the rear axle. It’s also connected to the two open-door sensors and a brake sensor. The result: a soft ride that will firm up in the corners.

What was the compression ratio on a 1988 Lincoln Mk VII?

Compression ratio was at 9.2:1 for the 1988-’89 models, and dropped to 9.0:1 for the 1990 and up models, although power and torque ratings, and their respective peaks, remained identical. The LSC and SE used this engine from 1988-’92, and 1990-up designer (i.e., Bill Blass) models used this engine as well.

Can you replace R12 with r134?

When did cars start using R12 instead of R134a?

Many organizations believe that R134A contributes to global warming. Vehicles manufactured before 1994 used R12 for air conditioning. Vehicles older than 1994 started using R134A instead of R12. So what if you have a car that was made in 1994 or even earlier?

How to convert an R12 compressor to a R134a?

R12 to R134a Conversion steps. The first step is first to make sure that the AC system is empty. Discharge and make sure to recycle it properly. Make sure your AC compressor is in good shape, otherwise replace it. Flush your current system entirely of R12 without leaving any traces of the R12 in it.

Which is a better refrigerant R12 or R134A?

One alternative to the R12 refrigerant is R134A Soon, the R12 got banned in many places and were. As a result, replaced with other refrigerant gases out of which one is the R134A. Unlike the R12, the R134A contains hydrogen and fluorine molecules which is why it is known as HFC rather than CFC.

Why is R12 used in air conditioners and freezers?

Because of the versatile nature of R12, it quickly became a refrigerant that used in air conditioners, refrigerators and freezers. This refrigerant is used in household appliances because its properties are relatively safe. This refrigerant was neither flammable nor toxic.

How to retrofit R12 to R134a by classic auto air?

R12 Recovery – Recover refrigerant from the A/C system using a dedicated R12 recovery device (to SAE J1990). R12 Parts replacement – Remove the components to be replaced as part of the retrofit to R134a, as recommended by the A/C system or vehicle manufacturers guidelines. Add 30-50ml PAO oil to a/c system. Retrofit warning labels.

Why does the R12 compressor not cool as well as the R134a?

R134a operates at higher discharge pressure, which can cause compressor seals to leak out. The result was evident- R134a could not cool as well as R12. There was also an issue with the oil used for lubrication purposes, which was washed away in the air after being absorbed by the refrigerant.

When to change refrigerant from R12 to R134a?

Now in order to abide by the law, the cars manufactured before 1995 needed to have a refrigerant conversion from R12 to R134a, which also led to further complexities. As R12 used a different oil that was not fit to be used with R134a, the replacement was not that simple.

How to retrofit R-12 to 134A with heat lamp?

OK to complete assembly, check for vacuum leaks (if no hurry, let it sit under vacuum for 12 to 24 hours) then fill with some R134a (say a can or two) and wait for warm day to top off charge. If not replacing accumulator/drier, then place heat lamp on it to get it up to about 150°F to boil out the moisture in the desiccant while under vacuum.

Can you replace R12 with R134?