Shattering Fan Blades - myth or ?

Joe K said:
Maybe someone could set up a comparison between the new Aluminum fans and the original fans?

My impression is they're "similar" but not identical in shape.

Joe K
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If you are familiar with the original, they aren't even close..
 
I went to a six blade plastic fan, feel a lot safer and have had it on the car for well over 15,000 miles.


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I have seen several of the four blade steel fan blades fail. They work harden over time and stress fracture.

Also, as demonstrated above, there have been some failures with the two blade fans, but not as many.

The plastic fans are right out. Too fugly for words.

I have seen and used a bunch of the aluminum two blade fans with zero failures to my knowledge.

Cheers
 
According to Les Andrews, to remove a 4 blade fan you need to remove the radiator. Anyone have another opinion on this activity ? Thanks, Bill
 
Franchise_24 said:
Would that be something your antique insurance would pay to have fixed?
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Yes, I think your LIABILITY INSURANCE MIGHT cover the injuries to the person who was looking at your engine when the blade flew at his head.

With ALL the evidence of the originals flying apart and the replacement ones looking original, WHY would there be a resistance to replacing them?
 
The only way i know how to replace a four blade is remove radiator or head with water pump still attached two blade you can sneak it out by tipping radiator forward found the info on fordbarn what a great site and a great bunch of guys willing to share all there knowledge
 
I just took off the water pump and 6 blade plastic fan as a unit and then removed the fan . Did not remove the fan schroud or radiator .
 
160B said:
I went to a six blade plastic fan, feel a lot safer and have had it on the car for well over 15,000 miles.


picture.php
Click to expand...


The six bladed fan can be removed without removing the radiator. Loosen the radiator support rods, put a piece of cardboard in the front of the radiator lean the radiator forward and unbolt the fan from the pulley, remove the fan and then remove the water pump with pulley attached.
 
I had an original two blade fan come apart just before I shifted going into third gear. The high RPM put the blade through the top of the hood. The now "out of balance blade" left on the water pump tore the water pump off of the block and put it through the radiator. That was the end of the fun for that week. I replaced the two bladed fan with a more modern four bladed fan. Years later, that one mysteriously lost a a blade while on the road. The obvious result was the engine started to shake like it was out of balance. I now run the new aluminum fan blades. As people normally don't notice it, I usually I have to point out that my new two blade fan blades that I now run are aluminum rather than the original Model A steel fan blades.
 
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