largest cfm electric fan?
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Re: largest cfm electric fan? (ykp53)
I could not get away with just one fan. I needed two of the largest so I went with 2 16inch tornado fans. They are about $140 each roughly.
They will also not fit on the rad so I mounted one low and to the left on the inside and one high and in front of the rad.
Combined they keep my big block cool in hot weather and stop and go. One keeps the motor cool under normal driving conditions but without the second to kick in at times the temperature would creep up.
At times I also turn both off, like cruising the expressways.
NO way I could run with just one electric fan in hot stop and go weather.
Double click to enlarge
[Modified by norvalwilhelm, 1:59 PM 3/15/2004]
They will also not fit on the rad so I mounted one low and to the left on the inside and one high and in front of the rad.
Combined they keep my big block cool in hot weather and stop and go. One keeps the motor cool under normal driving conditions but without the second to kick in at times the temperature would creep up.
At times I also turn both off, like cruising the expressways.
NO way I could run with just one electric fan in hot stop and go weather.
Double click to enlarge
[Modified by norvalwilhelm, 1:59 PM 3/15/2004]
Le Mans Master
Joined: Jun 2003
Posts: 5,446
Likes: 2
From: Not Correctly Restored Stingray Fla.
Re: largest cfm electric fan? (norvalwilhelm)
SPAL are awesome. Yes thay are expensive, but definitly great quality all the way through. Good directions, great quality hardware, and GREAT cooling fans. Down here in Florida in the summer (which is almost all year round) with 500+ hp, I have NO cooling issues what so ever. Even just criusing around. SPAL :thumbs: :thumbs: :thumbs:
Thread Starter
Racer
Joined: Jul 2001
Posts: 341
Likes: 0
From: macon, ga
Re: largest cfm electric fan? (norvalwilhelm)
What is the cfm rating of each of the fans? with the a/c stuff in front of the radiator i will have a hard time mouting two fans the way you have. i have been told that the mechanical fan pulls about same cfm as the rpms. so at 3000 rpms it pulls 3000 cfm. is this correct? so wouldnt it be possible to get a single 18" 3500 cfm to cool the car?
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Re: largest cfm electric fan? (ykp53)
My fans would be 1500-1900cfm each. It would be dificult to mount them in front of the air conditioning. The electric fans also put out full cfm at idle where the motor most needs it. At highway speeds the fans are not as important.
Drifting
Joined: Feb 2003
Posts: 1,461
Likes: 2
From: Allen TX
Re: largest cfm electric fan? (norvalwilhelm)
Is it possible to cool a stock L48 with a 2100 cfm electric fan. I am pretty much just looking for a ballpark estimate of what it takes to keep my car cool in 90+ degree weather. I was looking at this 16'' fan that Jeg's sells. http://www.jegs.com/cgi-bin/ncommerc...04&prmenbr=361
:confused:
:confused:
Le Mans Master
Joined: Aug 2000
Posts: 9,662
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From: Semper ubi, sub ubi
Cruise-In VI Veteran
Cruise-In VII Veteran
Re: largest cfm electric fan? (CrossedFlags77)
The difference between the cheaper Proform fans and Spals are in the cfm rating. Proform lists their fans as 2100 cfm in free air. Spal's ratings are NOT free air ratings. They are measured against a stock type radiator. So a Spal the rates at 2100 cfm is actually moving that amount of air in a real world setting, the Proforms and others are not rated.
Personally I don't think a 16" Proform will keep a stock SBC with a stock radiator cool in a stop and go situation, in Texas weather. Just my opinion.
If you can't swing the Spals then check the wrecking yards for the dual fan setup from a late model F-Body.
Several guys in Florida and othe hot places are running these with good results.
Good Luck!
Personally I don't think a 16" Proform will keep a stock SBC with a stock radiator cool in a stop and go situation, in Texas weather. Just my opinion.
If you can't swing the Spals then check the wrecking yards for the dual fan setup from a late model F-Body.
Several guys in Florida and othe hot places are running these with good results.
Good Luck!
Burning Brakes
Joined: Dec 1999
Posts: 1,088
Likes: 0
From: Silver Spring, Md.
Re: largest cfm electric fan? (ykp53)
Check these duals out: http://www.derale.com/electricfans.shtml
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Burning Brakes
Joined: Feb 2004
Posts: 958
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From: shawnee ks
Re: largest cfm electric fan? (ykp53)
I too use to use the split 16 inch fans in that configuration like norval,but now have gone to two 14 inch puller steel bladed perma cool fans ,both on the back side . this gives 20 percent better than pusher and doesnt cavitate the air where the two 16s use to cross over each other.These fans are rated at 2950cfm. My car is the most difficult to keep cool bar none. What made it all work the best was going to evans coolingfluid. this has a much higher boiling rate than water antifreeze.Something like 450 degrees with a 7lb cap.This allows the fluid to pull more heat away from the cylinders by notsteaming up.When the water antifreeze solution is converted to steam there is not as much contact area in the block to pull away heat . That is the advantage of evans ,used in nascar etc,mainly high hp but works well in constricted airflow vehicles like vettes.
Instructor
Joined: Jan 2004
Posts: 152
Likes: 0
From: Wilmington nc
Re: largest cfm electric fan? (big632)
The 16" here flows 2950cfm http://www.jegs.com/cgi-bin/ncommerc...84&prmenbr=361
