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77-78 1/2 Firebird (Ex.Turbo) ECU Engine Compartment Upgrade Kit

SKU: 22-602PS
Make: PONTIAC
$825.00

Original Air Group's affordable & easy to install high performance factory air-conditioning upgrade kit will help you save on horsepower, give you better fuel economy and performance, allow for a continuous duty rating of 6,000 RPM and save half the weight of the stock compressor, and function every bit as efficiently with the newer 134a refrigerant as it did with the old R12 refrigerant. It's also the easiest and most affordable way to convert your air conditioning system to the newer 134a! Kit includes rotary compressor, compressor mounting brackets, high-performance parallel-flow direct-fit condenser & mounting brackets, suction & discharge hoses, liquid lines, accumulator, o-rings & hardware and all the tech support you need. For factory air-conditioning equipped vehicles only. NOTE - Many early to mid 1978 models did not use a high-side low pressure switch installed on the rear liquid line. See part #22-602 for the proper kit for those models.

**Hoses supplied with one end open, along with the corresponding fitting and cutting/crimping instructions. Your local hydraulic shop can provide crimping services, or we can provide the crimping service for an additional fee. Instructions for both options will be included.

Original Air Group's affordable & easy to install high performance factory air-conditioning upgrade kit will help you save on horsepower, give you better fuel economy and performance, allow for a continuous duty rating of 6,000 RPM and save half the weight of the stock compressor, and function every bit as efficiently with the newer 134a refrigerant as it did with the old R12 refrigerant. It's also the easiest and most affordable way to convert your air conditioning system to the newer 134a! Kit includes rotary compressor, compressor mounting brackets, high-performance parallel-flow direct-fit condenser & mounting brackets, suction & discharge hoses, liquid lines, accumulator, o-rings & hardware and all the tech support you need. For factory air-conditioning equipped vehicles only. NOTE - Many early to mid 1978 models did not use a high-side low pressure switch installed on the rear liquid line. See part #22-602 for the proper kit for those models.

**Hoses supplied with one end open, along with the corresponding fitting and cutting/crimping instructions. Your local hydraulic shop can provide crimping services, or we can provide the crimping service for an additional fee. Instructions for both options will be included.

Products specifications
Model FIREBIRD
Years 77
Years 78
Category UPGRADE KITS
Category COMPRESSORS & PARTS
Category COMPRESSOR MOUNTING
Category HOSES, FITTINGS & LINES
Category FILTER-DRIERS & ACCUMULATORS
Category CONDENSERS & PARTS
Manufacturer PONTIAC

CONVERTING GENERAL MOTORS CARS

TO 134a

Until 1995, most cars with air conditioning used R-12 Freon refrigerant that is said to have a negative side effect of damaging the ozone layer and is no longer produced in most countries. since then, the industry standard has been R134a, which is an efficient replacement.  Contrary to popular belief, most cars originally equipped with R-12 can be converted to 134a and still keep you just as cool.

 

1955-61 Models with Hot Gas Valve (aka By Pass or Hot Gas By Pass Valve)

The Hot Gas Valve is most often found mounted to the compressor, though some cars have it mounted back near the evaporator. The front half of it looks like a bullet. (Click here for a typical photo)

Minimum Requirements

  • Change or restore the filter-drier.
  • Drain the compressor oil and recharge with 134a compatible oil. (PAG or Ester Oil)
  • Insure that the system is clean and free of contaminants (Depending on component condition, this may be a simple matter of blowing out with compressed air or liquid flushing with an air-conditioning flushing agent)
  • Replace or restore all rubber hoses with barrier hose.
  • Rebuild hot gas valve.
  • Install 134a charge port adapters.
  • Charge with 134a between 70-80% of the original R12 charge amount. Note: Hot gas valve will need to be adjusted during the charging process to properly adjust the low side by-pass pressure to 20psi.
  • Replace any o-rings with 134a compatible.

Recommended:

  • Install hi/lo pressure switch

HELPFUL HINTS

  • Ignore the 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.

 

1962-66 Models with Suction Throttling Valve (aka STV)

The suction throttling valve is installed on the evaporator, near the firewall.(Click here for a typical photo)

Minimum Requirements

  • Change or restore the filter-drier.
  • Drain the compressor oil and recharge with 134a compatible oil. (PAG or Ester Oil)
  • Insure that the system is clean and free of contaminants (Depending on component condition, this may be a simple matter of blowing out with compressed air or liquid flushing with an air-conditioning flushing agent)
  • Replace or restore all rubber hoses with barrier hose.
  • Rebuild suction throttling valve.
  • Install 134a charge port adapters.
  • Charge with 134a between 70-80% of the original R12 charge amount. Note: Suction throttling valve will need to be adjusted during the charging process to properly adjust the low side by-pass pressure to 20psi.
  • Replace any o-rings with 134a compatible.

Recommended:

  • Install hi/lo pressure switch

HELPFUL HINTS

  • Ignore the 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.

 

1966-73 Models with POA Valve

The POA Valve is installed on the evaporator, near the firewall. (Click here for a typical photo)

Minimum Requirements

  • Change or restore the filter-drier.
  • Drain the compressor oil and recharge with 134a compatible oil. (PAG or Ester Oil)
  • Insure that the system is clean and free of contaminants (Depending on component condition, this may be a simple matter of blowing out with compressed air or liquid flushing with an air-conditioning flushing agent)
  • Replace or restore all rubber hoses with barrier hose.
  • Install 134a charge port adapters.
  • Have POA valve recalibrated/rebuilt for 134a, or replaced with a POA Delete Kit
  • Charge with 134a between 70-80% of the original R12 charge amount.
  • Replace any o-rings with 134a compatible.

Recommended:

  • Install hi/lo pressure switch

HELPFUL HINTS

  • Ignore the 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.

 

1973-76 Models with VIR

The VIR is installed on the evaporator, near the firewall. (Click here for a typical photo)

Minimum Requirements

  • Change desiccant in VIR.
  • Drain the compressor oil and recharge with 134a compatible oil. (PAG or Ester Oil)
  • Insure that the system is clean and free of contaminants (Depending on component condition, this may be a simple matter of blowing out with compressed air or liquid flushing with an air-conditioning flushing agent)
  • 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.

Recommended:

  • Install hi/lo pressure switch
  • Install our VIR Eliminator (strongly recommended when converting to 134a), purchase a rebuilt VIR or let us rebuild yours.

HELPFUL HINTS

  • Ignore the 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.

 

1977-Newer Models with Accumulator

The accumulator is most often installed on the evaporator, near the firewall. (Click here for a typical photo)

Minimum Requirements

  • Change or restore the accumulator.
  • Drain the compressor oil and recharge with 134a compatible oil. (PAG or Ester Oil)
  • Insure that the system is clean and free of contaminants (Depending on component condition, this may be a simple matter of blowing out with compressed air or liquid flushing with an air-conditioning flushing agent)
  • 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.

Recommended:

  • Install hi/lo pressure switch
  • Upgrade the standard orifice-tube to a variable orifice tube.

HELPFUL HINTS

  • Ignore the 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.
Products specifications
Model FIREBIRD
Years 77
Years 78
Category UPGRADE KITS
Category COMPRESSORS & PARTS
Category COMPRESSOR MOUNTING
Category HOSES, FITTINGS & LINES
Category FILTER-DRIERS & ACCUMULATORS
Category CONDENSERS & PARTS
Manufacturer PONTIAC
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