Classic Retrofit Jack Posted August 5 Posted August 5 Our A/C system is designed for installation into Porsche 911 models years - 73 through 89 however it is possible to fit them into the earlier SWB models from model years '65 to '69. Modification will be required to both the car and to the supplied kit to enable it work effectively in 911 SWB vehicles from this period. To be clear the current A/C system is not 'plug and play', and will require some modifications to make it work and fit effectively. We are working on a SWB specific A/C system but at present there is no date or price confirmed. Please see the steps required below to make this system work in a 911 SWB.
Classic Retrofit Jack Posted August 5 Author Posted August 5 The first component to address is the blower / evaporator unit. Our 'Gen2 Blower' is a direct fit for F and G Body cars. It is not a direct fit for SWB variants. The factory fibreglass 'scoop' / air inlet needs to be remodelled to integrate with our blower unit. We recommend removing the black plastic air scoop that comes attached to our blower, and then offering the blower unit up into position before making any modifications. NB The image above shows the blower end caps and frame, as a 'skeleton' for visual clarity. Once the angle of the blower unit is established you can make modifications to the factory fibreglass scoop. Please measure carefully before you cut any materials. We recommend the addition of a new lower support for the blower. See picture below: Once the scoop is attached it should look something like the picture below: The picture below show the fibreglass scoop attached the blower and installed into the vehicle.
Classic Retrofit Jack Posted August 5 Author Posted August 5 The second step for SWB vehicles is to address the ducting. SWBs have notably fewer paths for air to enter the cabin (than later cars). This is a challenge if you prefer to not cut the body metalwork. HOWEVER there are some clever workarounds. The first and simplest option is to feed into the original heating system ducting. Simply connect an outlet of the blower to this. You may need to plug openings and gaps where the original scoop interfaced. Another option is to use our Round Vent for 911 Clock Position Some years featured a clock, others did not. We appreciate that this is a compromise (to lose your clock) but our recommendation is to be cool and check your watch! The picture below shows a car with blanking panel in the clock position. This picture, below, uses dual clock vents which works well in extreme climates. You do also have the option of forming new openings in the car body to add under dash vents. We do not warrant this and this is entirely at the risk of the owner. Pictured below is an install that used our Round Vent for 911 Clock Position placed in new openings (cut into the body), to act both as footwell vents and to allow for recirculation into the blower to aid system performance.
Classic Retrofit Jack Posted August 5 Author Posted August 5 The third area to consider is the electronics, wiring and the control switches. SWB 911's have a variance in the factory blower controls - with many having no fan switch, so you will need to install new switches and connect them to our A/C system. Our 'Gen2 Blower's are supplied to plug straight into the original factory F and G body loom to use the factory slide controller on the dash which comes with a three speed fan configuration. For the SWB installation you will have to replicate this using the plug and the pins are available, as per the example pictured below: 4 pin connector housing for fuel level sender. Porsche 911 / 928 - 90161289101/2 | Design911 The part number for the Pins is 999 652 351 22 (These are on back order in the UK however appear to be individually available elsewhere) The wiring details are key. These are fans are ground switching. Please take care to follow the original F / G body Wiring pin out. NB We use our own colour designations, Black, Orange Red Yellow. Black 12v, (Fused) Orange 0v (Fast) Red 0v (Medium) Yellow 0v (Slow) This can be wired up any number of ways, including any of these: 3 speed, rotary, toggle switch, push buttons. We suggest this is all done using automotive gauge wiring rated for 25A and fused at 15A. Mounting and positioning of the switch is down to the installer as there's a number of locations this could be fitted it is down to personal preference.
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