Fanology

[Mulletwagon]

Rattling water pump turned out to be a galled fan pulley and trashed key on the pump shaft. The fan is a six-blade plastic unit which nearly required pulling the radiator to get the pump out. Putting in a new pump but not sure which way to go on the fan. Pretty hot here in Florida and did not have any cooling problems with the six-blade but do not like the drill to pull the pump. Should I stay with the six-blade (which now needs a new hub) or just go with a steel or aluminum two-blade or four blade ? If the two blade will work sufficiently here I would prefer to go that route. Watcha think ?

[Bob C]

Aluminum two blade.

[d.]

2 blade aluminum fan is the way to go. looks right and the technology has been right for 90 years...no need to get fancy.

[Joe K]

You drive above 30 mph and the fan - ANY FAN - impedes air flow. The two blade version that much less.

If you throw blades or break a belt, drive like the hammers of H*ll to where you'll have it fixed - then shut it off quickly - or better - coast to a stop with the engine off.

Yes, this is a little overstated - but the physics are there.

Joe K

[30 Closed Cab PU]

To help with pump removal next time use these.


https://www.snydersantiqueauto.com/P...earchByKeyword

[chrs1961815]

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Most agree that NEW two blade fans are the way to go in cooling and safety. Original 2 and 4 blades are known to break because of the way they are riveted. The repro 2 blade fan is made of aluminum and cast, so no rivets. Have never heard anyond have a problem with it.

[Jacksonlll]

The main thing is to have a very good fit of the hub to the shaft. It’s a tapered joint and the two tapers must match or it will pound itself on every rotation until it fails. A lot of bad things can happen when a fan goes. Good luck.