mechanical fan removed power increase
Champion
Joined: Aug 2010
Posts: 2,697
Likes: 3
From: Cape Carteret NC
The fan takes more power the faster you spin it..
I saw no difference during normal driving or any MPG change, the difference is that on the hot days when the clutch fan would lock up there was a huge power loss which isn't there with an electric fan, the whole point of the clutch fan is to only be working when it needs to so most of the time you aren't gonna notice it.
I saw no difference during normal driving or any MPG change, the difference is that on the hot days when the clutch fan would lock up there was a huge power loss which isn't there with an electric fan, the whole point of the clutch fan is to only be working when it needs to so most of the time you aren't gonna notice it.
Banned
Joined: Jan 2012
Posts: 20
Likes: 0
You guys remember this thread? 
I just want to say that my '72 has a mechanical fan with no clutch.
I think its cuz if you welded the fan to the pump itself it wouldn't spin, so it wouldn't do anything.
I just want to say that my '72 has a mechanical fan with no clutch.
I think its cuz if you welded the fan to the pump itself it wouldn't spin, so it wouldn't do anything.
Yeah I used to have a '69 Charger R/T with a 440+4 that had no clutch on the fan. Ran hot till I installed an electric fan on it..
Administrator
Joined: Apr 2010
Posts: 87,398
Likes: 4,213
From: Clayton MI
On most of the electric fan equipped cars, that also have air conditioning that I have personally dealt with, the fans run when the a/c is on, regardless of vehicle speed. If the a/c is NOT on, generally, over 40 mph they do NOT run.
Since you started playing the know it all game, I joined in. You said pump, not pulley.
Umm the irony of misspelling "genius" is killing me. Lmao. Also it's "grateful" dude. If you're gonna have the attitude at least use spell-check. You might come across a little better....nah, probably not.
Last edited by PapaG; Apr 10, 2012 at 11:39 AM.
Rookie
Joined: Nov 2010
Posts: 85
Likes: 0
From: Tacoma Wa
i will try and upload a dyno graph tomorrow morning. been away from laptop all weekend. well the answer is in 3 hp and 9 lb/ft of torque(215hp and 300ft/lbs). mpg's gained right of the back of 1. now that was beating the ever living life out of it in rush hour traffic on way up there, and friday morons doing 60 in a 70 left lane. plus dyno runs, 12.5 was the worst i think i could get. happy as hell with the totally cool performance dual electric fans and the controller, aluminum shroud set-up. now have gotten the power to finally do a burn out rear brakes always stopped me before, no matter how i tried to do it. i am going to see if i can beat 13.5 mpg's which is my best run of a tank to date. so no more lead foot for a bit to see how that can really gain. ps please keep your stupid coments to your self if you can't have respect for what i just proved.
thanks again.
Doug
Banned
Joined: Jan 2012
Posts: 20
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You could lose the attitude, and be MUCH further ahead ya know.
On most of the electric fan equipped cars, that also have air conditioning that I have personally dealt with, the fans run when the a/c is on, regardless of vehicle speed. If the a/c is NOT on, generally, over 40 mph they do NOT run.
On most of the electric fan equipped cars, that also have air conditioning that I have personally dealt with, the fans run when the a/c is on, regardless of vehicle speed. If the a/c is NOT on, generally, over 40 mph they do NOT run.