electric fan question
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Senior User
Joined: Jun 2003
Posts: 285
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From: Kannapolis NC
electric fan question
I plan to insatll an electric fan but am very limited in space so it will need to be a thin one. Anyone have any suggestion as to brand, any to avoid? straigh blade or curved? Thanks
Hotshot
Joined: Nov 2000
Posts: 11,591
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From: Pflugerville, tx
I have to use 2 to solve my space problem, with the water pump pulley in between the two fans. best pic I can find at the moment
Sam
Hotshot
Joined: Nov 2000
Posts: 11,591
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From: Pflugerville, tx
each fan is supposed to be around 2200 cfm, 11in each.
Sam
Elder User
Joined: Apr 2002
Posts: 692
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From: Gatesville, TX
I would avoid Zirgo. The motors are not so good and the housings are made of a plastic that won't take much temperature before they warp and go to pot.
The SPAL fans seem to be the best.
The 16" straight blade fan moves about 300 cfm more air than the curved blade. The straight blade is very noisy, sounds like a mini siren.
The SPAL fans seem to be the best.
The 16" straight blade fan moves about 300 cfm more air than the curved blade. The straight blade is very noisy, sounds like a mini siren.
Posting Guru
Joined: Mar 2008
Posts: 1,272
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that's a good tip, don. most people don't know that straight blade will (sing) a rather loud song.
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Fleet Mechanic
Joined: Apr 2008
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From: Moore (or less), OK.
If space is a concern, I saw recently that a company has a fan with the motor offset to the side making for a very thin unit. It can be clocked to the top, sides or bottom depending on your application.
It was in a magazine as a new product. Either 'Car Craft', 'Hot Rod' or 'Custom and Classic Trucks'. I don't remember the manufacturer.
It was in a magazine as a new product. Either 'Car Craft', 'Hot Rod' or 'Custom and Classic Trucks'. I don't remember the manufacturer.
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Fan ????...
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Hotshot
Joined: Nov 2000
Posts: 11,591
Likes: 14
From: Pflugerville, tx
but if you have no room... you do what you have to
Sam
Hotshot
Joined: Oct 2004
Posts: 15,882
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From: Durham NC
One other tip. If you shroud the fan you may find the truck runs HOTTER than before at speed. This may be due to the fan and shroud restricting the airflow thru the radiator at higher road speeds causing the air to dam up and spill over the nose rather than flow thru the radiator. If you run into this condition try removing the shroud, and/or cutting vents in the solid parts of the shroud or air dams to relieve the bottleneck. Almost all front wheel drive and some rear wheel drive cars today use electric radiator fans, so they are plentiful with many sizes/configurations to choose from at your local wrecking yard. if you go that route, be sure to get the relay and the temp switch as well.
Hotshot
Joined: Nov 2000
Posts: 11,591
Likes: 14
From: Pflugerville, tx
One other tip. If you shroud the fan you may find the truck runs HOTTER than before at speed. This may be due to the fan and shroud restricting the airflow thru the radiator at higher road speeds causing the air to dam up and spill over the nose rather than flow thru the radiator. If you run into this condition try removing the shroud, and/or cutting vents in the solid parts of the shroud or air dams to relieve the bottleneck. Almost all front wheel drive and some rear wheel drive cars today use electric radiator fans, so they are plentiful with many sizes/configurations to choose from at your local wrecking yard. if you go that route, be sure to get the relay and the temp switch as well.
Yeh, I am thinking I have this problem.. runs great at idle, gets hotter while driving,
the shroud has fixed areas that cover about 1/3 the surface area.. those pressure based flaps might help here..
I have this monster 6 row rad, so it SHOULD be able to cool enough, if I can get the air thru it..
Sam
Cargo Master
Joined: May 2008
Posts: 2,486
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From: Bakersfield, CA
Does anybody know about what the factory fans moved in CFM? My truck has a small 4 blade engine driven fan with NO shroud, and I would like to switch that out with an electric fan, but I don't know how Heavy Duty of a fan I'd need to take care of my cooling. I have no accessories, and in order to save money, I would rather find a fan off a used car or something.
Hotshot
Joined: Oct 2004
Posts: 15,882
Likes: 88
From: Durham NC
Just wire it in with a thermostatic switch in the coolant line and direct power thru a relay. If it can handle a modern engine it can probably handle your I-6 assuming the radiator isn't gunked up. The stock setup depended more on air pushed thru by vehicle speed than the fan.