Ditching the Viscous Cooling Fan

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Ditching the Viscous Cooling Fan

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Ditching the Viscous Cooling Fan - 6/9/2006 10:45:56 AM

btp226

Posts: 17
Joined: 5/9/2006
From: Southern NH
Status: offline

I keep reading about the alleged performance & MPG increase by removing the stock cooling fan and replacing it with a thermostatically controlled electric unit (Kenlow, etc). Has anyone here actually done this and what (if any) increases did you notice?

Thanks,
Brian

1995 Disco (petrol, AT)

< Message edited by btp226 -- 6/9/2006 10:50:08 AM >

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Post #: 1

RE: Ditching the Viscous Cooling Fan - 6/30/2006 10:37:18 AM

btp226

Posts: 17
Joined: 5/9/2006
From: Southern NH
Status: offline

I guess no one here has ever done it then? I may be the first to "experiment".

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Never wrestle with a pig, you both get dirty and the pig likes it

(in reply to btp226)

Post #: 2

RE: Ditching the Viscous Cooling Fan - 8/14/2006 6:39:34 PM

Landzu

Posts: 2023
Joined: 4/7/2005
From: Dallas TX
Status: offline

Let us know how its working.

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Post #: 3

RE: Ditching the Viscous Cooling Fan - 3/22/2007 8:29:32 PM

silverseven

Posts: 12
Joined: 12/18/2006
Status: offline

I actually did this 2 days ago. I replaced the viscous fan with two 14 inch electrics. I used a Hayden electronic fan controller I bought at Checkers. This little unit is awesome, as it is pre-wired for 2 fans, has it's own relay, it's own temp probe, and the engage temp setting is adjustable. The truck runs much quieter now, and the fans don't run all the time like the stock one did. As far as performance and mpg gains, the truck feels a tad faster, but we shall see over time about the mpg.

(in reply to Landzu)

Post #: 4

RE: Ditching the Viscous Cooling Fan - 3/22/2007 9:01:02 PM

werldcup

Posts: 84
Joined: 2/24/2006
Status: offline

What brand fans did you use?

(in reply to silverseven)

Post #: 5

RE: Ditching the Viscous Cooling Fan - 3/24/2007 2:13:30 PM

silverseven

Posts: 12
Joined: 12/18/2006
Status: offline

They are Hayden Rapid-Cool 14 inch fans. I had to trim the edges slightly to get them both to fit against the radiator, but you can't even see that when they're installed. I bought them at Checker (Shucks, Kragen) for around $60 each. I have the relay temp adjusted to just past the thermostat's cooling point, so the fans only turn on if the thermostat can't make it by itself. The "ignition" wire for the relay is connected to the hot wire on the brake master's sensor cap, so the "brake" light comes on in the dash when the fans are running. Kinda nice so I can see when they are on.

(in reply to werldcup)

Post #: 6

RE: Ditching the Viscous Cooling Fan - 3/27/2007 10:07:32 PM

greg409

Posts: 116
Joined: 7/29/2006
Status: offline

Nice touch -
I used a two speed Lincoln 16" 4500 cfm w/ two relays (30a ea) fused thru bat.
I pull it in (hi/lo) with dp/dt (center off) switch mounted under dash
I've only used low speed normally even if a/c is on

My viscous coupling was going so it runs smoother & seems to jump off idle a little quicker
'97 D1

< Message edited by greg409 -- 3/5/2008 6:24:26 PM >

(in reply to silverseven)

Post #: 7

RE: Ditching the Viscous Cooling Fan - 3/29/2007 9:33:02 PM

deadclock

Posts: 13
Joined: 3/19/2007
Status: offline

Hayden is a good brand for fan and other parts. I had this problem with my jeep fan clutch when I noticed a leak on it. Not sure why it became unsealed. So I replaced it.