Fan Clutch

[drolston]

Whatever you come up with needs to have at least as much fan blade area and pitch as the stock fan, because the crank mounted fan does not get the "overdrive" speed of a separately mounted fan with a pulley smaller than the crank pulley.

Reminder to all crank mounted fan owners, be very careful if you turn the engine over by pulling on the fan blades; they bend easier than you might think.