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Strange fan
#770599 February 02nd 2021 11:14 am
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Lee7673 Offline OP
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I pulled the motor out of my donor van for the chopped Dodge and I looked at the fan and my first thought was several of the blades had broken off but apparently this is how they come. It seems like it wouldn't be balanced or move as much air if there were more blades and they were symmetrical. Any idea why they do this? Is it ok to switch to a different fan?
Thanks
[Linked Image from live.staticflickr.com]IMG-9013 by Lee Hatfield, on Flickr


Re: Strange fan
Lee7673 #770601 February 02nd 2021 11:47 am
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That looks like a typical factory fan. Change as you wish. I’ve changed to flex fans in the past, but I generally think the factory is smarter than I am.

Last edited by samhain; February 02nd 2021 11:48 am.
Re: Strange fan
Lee7673 #770606 February 02nd 2021 12:25 pm
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My 360 fan is that way as well. They are noisy and cool well, move alot of air as long as the fan clutch doesn’t fail.
Flex fans came into vogue on motors without fan clutches, as the flex fans blades flex out straight under RPM, lessening the load on the motor at speed due to increased air flow through the radiator at speed.


"Who New? Blue"
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"Old Blue"
1988 Dodge B250

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'94 Dodge B350 www.xplorermotorhome.com/
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Old vans never really die if we chose to let them live
Re: Strange fan
Wedgy #770625 February 02nd 2021 6:39 pm
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They are like that as it makes it easier to access the timing chain and water pump bolts just by rotating the fan so the socket can get in between the bigger gaps.

On my Dodge getting in the lower half of the fan shroud in, without removing the radiator hoses from radiator, without rotating that fan to accommodate, would be on the order of impossible.

Re: Strange fan
Lee7673 #770645 February 02nd 2021 11:13 pm
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I can’t imagine a scenario where I would pull the water pump or timing cover without pulling the fan first.

Re: Strange fan
Lee7673 #770646 February 02nd 2021 11:18 pm
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It looks to be for noise reduction.


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