Dewitt Dual Fan install question
Thread Starter
Burning Brakes
Joined: Feb 2010
Posts: 825
Likes: 20
From: Laplata Maryland
Dewitt Dual Fan install question
I already have a Dewitt radiator which I installed a number of years ago. Now I'm wanting to install Dewitt dual fan, my question is can I install the fan assembly without removing the radiator? I called
Dewitt and they said their not quite sure, it could be tight and if it is just remove the radiator. Well I'll make sure to invite you over if I do. I really want to ovoid that, I appreciate anyone's past experience
Dewitt and they said their not quite sure, it could be tight and if it is just remove the radiator. Well I'll make sure to invite you over if I do. I really want to ovoid that, I appreciate anyone's past experience
Sr.Random input generator
Joined: Jan 2008
Posts: 7,804
Likes: 2,232
From: Sammamish, WA
I don't know about the Dewitts' unit, but the stock fan is easily removable. When I needed to remove the radiator (and I did it more than a few times so far), all I needed to do was to unbuckle all the cable holders the fan has on it by the top area, unscrew two bolts (one up top by the passenger side, the other one down below on the driver side), and then push up a little bit to let it loose from its tabs and slide it down. I do have a lift, and found that it was easier to remove it from the bottom of the car since no coolant line obstruct that way. I hope this helps.
Last edited by X25; Jul 16, 2013 at 08:39 PM.
Racer
Joined: Oct 2007
Posts: 263
Likes: 7
From: Brownsville Texas
I already have a Dewitt radiator which I installed a number of years ago. Now I'm wanting to install Dewitt dual fan, my question is can I install the fan assembly without removing the radiator? I called Dewitt and they said their not quite sure, it could be tight and if it is just remove the radiator. Well I'll make sure to invite you over if I do. I really want to ovoid that, I appreciate anyone's past experience
Dewitt and they said their not quite sure, it could be tight and if it is just remove the radiator. Well I'll make sure to invite you over if I do. I really want to ovoid that, I appreciate anyone's past experience 
Thread Starter
Burning Brakes
Joined: Feb 2010
Posts: 825
Likes: 20
From: Laplata Maryland
Also are you happy with the results of a dual fan?
Racer
Joined: Oct 2007
Posts: 263
Likes: 7
From: Brownsville Texas
It will come out either thru the top or bottom. Last time - I pulled it out the bottom. I had my car on jack stands also but you don't need them all the way up. As for the results - I don't feel the money spent on the dual fans was worth it. The in town driving temps are down by only maybe 10 to 12 degrees.
Thread Starter
Burning Brakes
Joined: Feb 2010
Posts: 825
Likes: 20
From: Laplata Maryland
It will come out either thru the top or bottom. Last time - I pulled it out the bottom. I had my car on jack stands also but you don't need them all the way up. As for the results - I don't feel the money spent on the dual fans was worth it. The in town driving temps are down by only maybe 10 to 12 degrees.
Sr.Random input generator
Joined: Jan 2008
Posts: 7,804
Likes: 2,232
From: Sammamish, WA
Another issue that came to my mind when I looked up dual fans: As you know, the fans have no affect at higher speeds since running them would actually interfere with the air flow. I actually wonder if dual fans could actually hinder radiator's performance at high speeds since they block more of an area right behind the radiators, thereby blocking air flow.
Thread Starter
Burning Brakes
Joined: Feb 2010
Posts: 825
Likes: 20
From: Laplata Maryland
Another issue that came to my mind when I looked up dual fans: As you know, the fans have no affect at higher speeds since running them would actually interfere with the air flow. I actually wonder if dual fans could actually hinder radiator's performance at high speeds since they block more of an area right behind the radiators, thereby blocking air flow.
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Le Mans Master
Joined: Apr 2011
Posts: 7,821
Likes: 412
From: Montreal
St. Jude Donor '13
I don't think the dual fans effect cooling at speed at all. My car runs the same 180-185 on hot days when rolling at a decent speed. Same as it was before dual fans. It does help a little when not moving or moving very slowly.
Sr.Random input generator
Joined: Jan 2008
Posts: 7,804
Likes: 2,232
From: Sammamish, WA
During regular driving, the system is already stronger than required, so in my opinion, the difference would be minimal.
Last edited by X25; Jul 17, 2013 at 04:23 PM.
Le Mans Master
Joined: Oct 2006
Posts: 5,078
Likes: 19
From: Cumming, GA
Duals didnt do much to help my stroker personally. I installed it from the bottom on jack stands as well. I'm actually considering taking it out and going back to the single I had prior just because I'm weird like that. 
Thread Starter
Burning Brakes
Joined: Feb 2010
Posts: 825
Likes: 20
From: Laplata Maryland
Fans are activity when temperatures are reach. But they will turn off at 35 mph so the fan motor don't get over driven, which in turn would damage the fan motor.