Electric cooling fans
Thread Starter
Melting Slicks
Joined: Dec 2009
Posts: 3,233
Likes: 657
From: Thunder Bay
Electric cooling fans
I`m helping a friend rework his cooling system. He needs to go with dual pusher fans. I prefer a puller setup with a good shroud but its not an option with his setup. There are many fans available from Derale and Hayden and a few others including factory fans. Interested in whatever information I can get from those of you who are running electric fans. What fans have proven to be effective and reliable. How many CFM are required, etc.
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
what kind of car, power level?
Best fans imo are oem GM. Maybe off a truck luxury car etc.
They have to last many yrs, with ac on in traffic
many fan mfrs rate thier cfm with no radiator (restriction in front of it).
WIth a larger radiator you need a stronger fan; I have a 2000? cfm spal it isnt cutting it.
Best fans imo are oem GM. Maybe off a truck luxury car etc.
They have to last many yrs, with ac on in traffic
many fan mfrs rate thier cfm with no radiator (restriction in front of it).
WIth a larger radiator you need a stronger fan; I have a 2000? cfm spal it isnt cutting it.
Last edited by cv67; Feb 23, 2021 at 12:00 PM.
Racer
Joined: Jan 2017
Posts: 496
Likes: 153
From: San Francisco Bay Area
I`m helping a friend rework his cooling system. He needs to go with dual pusher fans. I prefer a puller setup with a good shroud but its not an option with his setup. There are many fans available from Derale and Hayden and a few others including factory fans. Interested in whatever information I can get from those of you who are running electric fans. What fans have proven to be effective and reliable. How many CFM are required, etc.
Melting Slicks
Joined: Dec 2014
Posts: 2,787
Likes: 2,328
From: Central UT
As you contemplate how to set it up, remember to consider a proper shroud and seals to force the air thru the radiator. Air is a lot like water - it will find the 'easiest way' to flow; like around a radiator. A lot of electric fan set-ups can actually cause an overheating problem if not properly set up.
Thread Starter
Melting Slicks
Joined: Dec 2009
Posts: 3,233
Likes: 657
From: Thunder Bay
As you contemplate how to set it up, remember to consider a proper shroud and seals to force the air thru the radiator. Air is a lot like water - it will find the 'easiest way' to flow; like around a radiator. A lot of electric fan set-ups can actually cause an overheating problem if not properly set up.
Racer
Joined: Jan 2017
Posts: 496
Likes: 153
From: San Francisco Bay Area
Thanks. That tip put me on to a lot of threads I couldn`t find by searching for èlectric fan`.
My first choice would be a puller setup with a good shroud but that`s not an option in this case. Intuitively it seems to me that a shroud would at best not be effective, and at worst a bad idea in a pusher configuration, but I would be interested in hearing opposing opinions.
My first choice would be a puller setup with a good shroud but that`s not an option in this case. Intuitively it seems to me that a shroud would at best not be effective, and at worst a bad idea in a pusher configuration, but I would be interested in hearing opposing opinions.
2026 Loser of the Year
Joined: Sep 2013
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From: New Or-leens Loo-z-anna
I first tried a puller fan 2200 CFM...it helped but engine still ran close to hot with a 180" thermostat.
I added a 2200 CFM pusher fan in front of the radiator..the combo woirked great...98" ambient air and city traffic/engine stayed at 180*..
The problem was...both fans turned on at the same time causing my CS130 alternator to "lag" for one second which was not good fir the alternator.
SO...I added a 10 second delay relay to the pusher fan...now the alternator doesn't have a overload lag
DblTrbl has a good thread in the Tech Forum on fan combos and rewiring...other members also have good threads in General & Tech Forums
I added a 2200 CFM pusher fan in front of the radiator..the combo woirked great...98" ambient air and city traffic/engine stayed at 180*..
The problem was...both fans turned on at the same time causing my CS130 alternator to "lag" for one second which was not good fir the alternator.
SO...I added a 10 second delay relay to the pusher fan...now the alternator doesn't have a overload lag
DblTrbl has a good thread in the Tech Forum on fan combos and rewiring...other members also have good threads in General & Tech Forums
Last edited by doorgunner; Feb 26, 2021 at 09:59 PM.
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Thread Starter
Melting Slicks
Joined: Dec 2009
Posts: 3,233
Likes: 657
From: Thunder Bay
I first tried a puller fan 2200 CFM...it helped but engine still ran close to hot with a 180" thermostat.
I added a 2200 CFM pusher fan in front of the radiator..the combo woirked great...98" ambient air and city traffic/engine stayed at 180*..
The problem was...both fans turned on at the same time causing my CS130 alternator to "lag" for one second which was not good fir the alternator.
SO...I added a 10 second delay relay to the pusher fan...now the alternator doesn't have a overload lag
DblTrbl has a good thread in the Tech Forum on fan combos and rewiring...other members also have good threads in General & Tech Forums
I added a 2200 CFM pusher fan in front of the radiator..the combo woirked great...98" ambient air and city traffic/engine stayed at 180*..
The problem was...both fans turned on at the same time causing my CS130 alternator to "lag" for one second which was not good fir the alternator.
SO...I added a 10 second delay relay to the pusher fan...now the alternator doesn't have a overload lag
DblTrbl has a good thread in the Tech Forum on fan combos and rewiring...other members also have good threads in General & Tech Forums
2026 Loser of the Year
Joined: Sep 2013
Posts: 36,599
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From: New Or-leens Loo-z-anna
Top of the line cheap 2200 CFM AutoZone E-fans...I'll have to check the label on the fans to refresh my memory of 6 years ago, since I studied several manufacturer CFM/Amp ratings before I decided on a brand. I think the price was about $70 Each.
I agree with other members that OEM fans last a long time...I just didn't want to install 10 year old used fans. I remember they were high-flow/low amp fans compared to others. I bought a pair of them large enough to cover 90% of the radiator surface. The increase in airflow is remarkable using the push-pull combo as opposed to a single pusher or a single puller fan.
I agree with other members that OEM fans last a long time...I just didn't want to install 10 year old used fans. I remember they were high-flow/low amp fans compared to others. I bought a pair of them large enough to cover 90% of the radiator surface. The increase in airflow is remarkable using the push-pull combo as opposed to a single pusher or a single puller fan.
Last edited by doorgunner; Feb 28, 2021 at 03:40 AM.