30-07-2019, 11:50 AM
I have had a 4 blade fan on the RP for a number of years and it has made an appreciable difference, particularly when climbing. The car has never boiled even after tackling hills like Mont Ventoux and the Col de la Bonnette. I tend to leave the drive belt on the slack side to reduce the forces acting on the spindle shaft, but with enough tension to keep everything turning. I don't know whether the position of the fan on the later cars is different to the RP but there's no way you can remove even a 2 blade fan on the RP without removing the radiator. In the case of the original post, is the correct fan pulley fitted? The fan should be as close to the radiator as possible.
It's worth noting that in winter, warm up times are greater with the 4 blade fan.
It's worth noting that in winter, warm up times are greater with the 4 blade fan.