portmed.blogg.se - october 2023

#69 EL CAMINO AC UPGRADE#
#69 EL CAMINO AC FREE#

If you happen to have unique accumulator or drier that is difficult to find we can rebuild your original! These systems had a pressure switch and orifice tube. It is the earliest of the modern cycling sytems GM used. The accumulator is most often installed on the evaporator, near the firewall. This like the POA eliminator, turns a bi-pass system into a cycling system.

#69 EL CAMINO AC UPGRADE#

The most popular is to upgrade to VIR eliminator. There are limited options with vehicles originally equipped with VIRs. VIR Options from Original Air VIR Eliminator

Typical 134a charge rate will be approximately 70-80% of the factory R12 charge amount.

Rebuild your original VIR or purchase a rebuilt one from us.

Due to the VIR's incompatibility with 134a, we highly recommend replacing it with our VIR Eliminator Kit.

(Click here for more information about VIR Restoration) The VIR is installed on the evaporator, near the firewall. they do also require a pressure switch to now cycle the clutch of the compressor converting from a bi-pass system to a cycling system. These have the same function as a value price POA, but with the aesthetic and fit of the original valve. We are proud to offer our exclusive Billet POA eliminator option.

Charge with 134a between 70-80% of the original R12 charge amount.

(Click here for more information about POA Restoration) The POA Valve is installed on the evaporator, near the firewall. Note: Suction throttling valve will need to be adjusted during the charging process to properly adjust the low side by-pass pressure to 20psi. (Click here for more information about STV Restoration) The suction throttling valve is installed on the evaporator, near the firewall.

Typical 134a charge rate will be approximately 70-80% of the factory R12 charge amount.ġ962-66 Models with Suction Throttling Valve (STV).

A properly charged 134a system will likely show bubbles in the sight-glass.

Replace any O-rings with 134a compatible.

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 or restore all rubber hoses with barrier hose.

#69 EL CAMINO AC FREE#

Ensure 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).This is assuming the compressor is currently functioning correctly. Drain the compressor oil and recharge with 134a compatible (PAG or Ester Oil) oil.REBUILD REQUEST FORM Minimum Requirements for converting a car with a Hot Gas Valve to R134a (Click here for more information about Hot Gas Valve Restoration) This is a split image of a before and after restoration of a hot gas valve: These are mounted to the suction side of the system, so they it is a valve that regulated pressure through suction. The Hot Gas Valve is most often found mounted to the compressor, though some cars have it mounted back near the evaporator. Once this criterion is met a pressure switch or thermostat opens the clutch power circuit and disengages the clutch, stopping the circulation of refrigerant.ġ955-61 Models with Hot Gas Valve (By Pass or Hot Gas By-Pass Valve) In these systems, when the air conditioner is turned on, the compressor clutch is engaged until certain pressures and/or temperatures are reached in the system. This is also a generic term for later and modern systems where the clutch on the compressor engages off and on to regulate refrigerant. Because no matter what the compressor was working all the time when turned on. This is where the old adage of turning off the air to save gas came from.

This is much different than newer systems where the compressor clutch engages off and on to regulate refrigerant. When the system reached certain pressures and/or temperatures a valve opened and allows the refrigerant to continue to circulate. In these systems, when the air condition was turned on, the clutch on the compressor was engaged until the air was turned off. This is a generic term for the earlier valve regulated systems for the early GM vehicles.