Glad he’s not my surgeon!, first of all the car should carry 2 fans bolted to the water pump to give 8 blades, it only appears to have 1 with 4 blades. Rule 1 Alvis knows best Rule 2 if Alvis is wrong refer to rule 1, ie put it back how Alvis made it, perhaps with the addition of electric fans or assistance from water pumps, it normally works!
Alvis Archive 
Glad he’s not my surgeon!, first of all the car should carry 2 fans bolted to the water pump to give 8 blades, it only appears to have 1 with 4 blades. Rule 1 Alvis knows best Rule 2 if Alvis is wrong refer to rule 1, ie put it back how Alvis made it, perhaps with the addition of electric fans or assistance from water pumps, it normally works!