This Original Air Group reproduction of the Ford accessory idler is mounts below the stock compressor clutch/pulley and the crankshaft pulley on the stock 289 V8 engine. It was designed as an add-on by Ford to take up the belt slack and solve complaints of excessive belt slap for 1965-66 289 V8 engines.
CONVERTING MY FORD 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.
Systems w/o Suction Valve Minimum Requirements
Systems w/POA Valve (aka Suction Throttling Valve & By-Pass Valve) The POA Valve is installed on the evaporator, near the firewall. (Click here for a typical photo)
Systems w/Accumulator The accumulator is most often installed on the evaporator, near the firewall, but occasionally found in the middle of the suction hose between the evaporator and the compressor. (Click here for a typical photo)