[Healeys] Curved or Straight

[Patrick & Caroline Quinn]

Hello

 

Once again I am about to investigate the engine cooling of the Healey
Duncan. Nothing highly unusual with it in that it's a Riley 2.4 litre engine
and unpressurised.

 

Part of the process is to replace the existing Kenlowe electric fan with a
more modern unit. The Kenlow sits over an inch from the radiator surface
while a modern unit should only be a few millimetres. Of course it was never
fitted with an electric fan when new, but it's simply not coping with the
warmer Australian climate.

 

I will be doing all sorts of wonderful things like removing the cylinder
head to replace the cooling tube between number two and three combustion
chamber, refurbishing the radiator, rodding the block etc etc.

 

The question that's on my mind concerns whether to install an electric fan
with curved or straight blades. Australian manufacturer Davies Craig says
that straight blades are best, but they would say that as that's what they
make.

 

Anyone undertaken any research as to what's the most efficient?

 

Hoo Roo

 

Patrick Quinn

Blue Mountains, Australia

Where it's raining again - wonderful

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