One of my goals was to keep the original 1974 fan for cooling. The American version in 74 included a compressor for the ‘smog reduction’ systems. That was removed from this car before I bought it. The original pulley extends the gap between the water pump and the radiator for a second belt to drive the compressor. It’s just enough to allow the Super Charger belt to fit between the fan and the alternator belt. But… my configuration of the SC belt just touches the empty compressor belt area. This is visible in the photo below. Notice the mark on the SC belt where the ‘rib’ of the pulley is touching it.
I’ve found a machine shop that will reduce the diameter of the area which will allow the SC belt enough room to work as planned.
I’m hoping the fan is enough to cool the system. This, plus the new radiator, may prove enough. I can hope, can’t I?
UPDATE: I was trying to route the belt so it would give more space to the bottom radiator hose by putting the tensioner pulley behind the lower belt. It looked good, but didn’t work. The upper belt continued to rub even after I had it reduced in size. So I went back to the original configuration of the tensioner. More on that later.