Water pump grenaded today--

[DFRESH]

Originally Posted by GregWeld

Found this on the Stewart website... Very interesting.



When using a mechanical fan, a properly designed shroud must be used. Most mechanical fans are not designed for high RPM use: they can have serious vibrations problems, due to air turbulence, when run over 6,500 RPM. This is a turbulence problem, not a balance problem, and will destroy the water pump and components in front of it. The large fans preferred by dirt oval track racers can consume up to 18 horsepower at 6,500 RPM. Do NOT run a mechanical fan that is any larger than required for the application.

Flex fans are a poor design for performance applications. They move less air at higher RPM, and only consume a fraction less power than standard fixed pitch fans.

Clutch-style fans are inconsistent and we do not recommend their use for any application, if possible.

Great stuff there Greg. I will ditch the clutch fan---I am literally just buying time until the other motor goes into the car. It's then that I will clean up the engine compartment to my liking and get rid of many things--that should happen in this coming year---I say "should"---depends on what else comes flying off the car before then. Thanks again man.

Doug