Electric fan switch help
Thread Starter
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Electric fan switch help
Looking for something that comes on 185 tops maybe 180 or?
Turns off 5-10 degrees less.
Spal fan relay kit and fan switch.
They only make 2
1 that comes on 195 too warm for my liking
2 on 185 off 165. My car will never run that cool period so the fan runs all the damn time.
As it is, sitting in 90 deg weather it wont pull it down under low 180s. Sure its not "hot" but do run some compression and timing. Little cooler would be nice. Not much
Do I have to run a spal specific switch is there something special about them>
I plan on twisting the snot out of this motor...sure a mech fan will cool much better at idle or very low speeds but dont need it coming apart potentially and dont want to give up any power.
Some other brand/part # I can use (no controllers)
Turns off 5-10 degrees less.
Spal fan relay kit and fan switch.
They only make 2
1 that comes on 195 too warm for my liking
2 on 185 off 165. My car will never run that cool period so the fan runs all the damn time.
As it is, sitting in 90 deg weather it wont pull it down under low 180s. Sure its not "hot" but do run some compression and timing. Little cooler would be nice. Not much
Do I have to run a spal specific switch is there something special about them>
I plan on twisting the snot out of this motor...sure a mech fan will cool much better at idle or very low speeds but dont need it coming apart potentially and dont want to give up any power.
Some other brand/part # I can use (no controllers)
Melting Slicks
Joined: Sep 2004
Posts: 2,655
Likes: 19
Adkustable switch, fits in the drain bung on your radiator. Very happy with mine.
http://www.haywireinc.com/index.cfm/...prod/prd51.htm
http://www.haywireinc.com/index.cfm/...prod/prd51.htm
Thread Starter
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Hmm interesting.
Like that its out of the way. Dial goes in the car so you can adjust on/off?
How hard is the wiring (Im horrible wiht that)
I have 2 wires coming off my fan goes to a relay
Like that its out of the way. Dial goes in the car so you can adjust on/off?
How hard is the wiring (Im horrible wiht that)
I have 2 wires coming off my fan goes to a relay
Melting Slicks
Joined: Sep 2004
Posts: 2,655
Likes: 19
The lead is not long enough to go in the car, Mine is mounted under the nood. Just start the car, let it warm to the "on" temp, then turn the **** til the fan comes on. It come with a diagram, but wiring a fan through a relay is about as simple as wiring gets. Probably a dozen diagrams online too.
Race Director
Joined: Nov 2003
Posts: 12,221
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From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
http://www.ecklerscorvette.com/corve...1984-1995.html
Here's a kit if you need wiring. I'm sure your local "pepboys" has something too. I got my 205 switch at Advanced $14. Multiple choices are made.
BTW...Did you pickup another Z, Ron?
Here's a kit if you need wiring. I'm sure your local "pepboys" has something too. I got my 205 switch at Advanced $14. Multiple choices are made.
BTW...Did you pickup another Z, Ron?
Le Mans Master
Joined: Aug 2010
Posts: 9,272
Likes: 17
here is a pretty good write up on the multitude of different electric fan controls, hope it helps
http://www.google.com/url?sa=t&rct=j...lBPZvItz33SW7g
http://www.google.com/url?sa=t&rct=j...lBPZvItz33SW7g
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Le Mans Master
Joined: Dec 2007
Posts: 6,422
Likes: 591
From: McHenry Illinois
Adkustable switch, fits in the drain bung on your radiator. Very happy with mine.
http://www.haywireinc.com/index.cfm/...prod/prd51.htm
http://www.haywireinc.com/index.cfm/...prod/prd51.htm
Melting Slicks
Joined: Sep 2004
Posts: 2,655
Likes: 19
I really like the adustable. If you think it's coming on too much, just turn the temp up. Not something you can do with a switch. I've also wired it so the fan comes on with the AC trinary switch. At hiway speeds in reasonable temps, the fan rarely comes on and temp is stable. Been working great for about 5 years, I did the same setup in my 442.
Melting Slicks
Joined: Sep 2004
Posts: 2,655
Likes: 19
No just a single relay. Switched ignition providing the + voltage and ground provided by the trinary switch or temp switch. High amperage circuit starts at the alternator, through a 40 amp fuse, to the relay.
It's pretty much the same as in the Vintage Air link above.
It's pretty much the same as in the Vintage Air link above.
Drifting
Joined: Sep 2006
Posts: 1,986
Likes: 21
From: Columbus MN
Two fans, turn on independently?
Does anyone with 2 fans have them set up to turn on indepentently at different temps? I am thinking about dual switches and dual relays.
The Lincoln dual speed relays only work with fans specifically made to run 2 speeds, correct?
The Lincoln dual speed relays only work with fans specifically made to run 2 speeds, correct?
Le Mans Master
Joined: Aug 2010
Posts: 9,272
Likes: 17
the relay set ups for two speed fans when used with dual fans, shut off the low temp. fan when they activate the high temp. one , just as they de-energize the low speed when they turn on the high speed. If you dont want to run both at the same time they are fine, but to run both at the same time they need individual switches 'temp or other' , and their own relays
some vehicles , have 2 temp. switches combined in one unit with a different leg going to each fan, 'bmw' mercedes, among others and are adaptable to the chevy engine
I have mine set up with the two temp. switches but I'm always looking for something better
some vehicles , have 2 temp. switches combined in one unit with a different leg going to each fan, 'bmw' mercedes, among others and are adaptable to the chevy engine
I have mine set up with the two temp. switches but I'm always looking for something better
Last edited by oldalaskaman; Sep 16, 2012 at 01:41 PM.
Le Mans Master
Joined: May 2006
Posts: 9,993
Likes: 1,136
From: League City Tx
I use this fan switch:
http://www.zirgo.com/catalog/Tempera...180-Degrees-On
I have it in my Dewitts radiator and it actually switches on about 188* and off about 178*. If I had it in the water cross over on the intake it would probably cycle on closer to 180*.
When I had the spal 185/165 switch it was really more like 195* on and 180* off... I didnt want my engine that hot.
My lincoln MK8 fan will cycle on at 188* and instantly pulls the temps down below 180*....even on a 100* day. Been running this setup for about 8k miles. Works great.
http://www.zirgo.com/catalog/Tempera...180-Degrees-On
I have it in my Dewitts radiator and it actually switches on about 188* and off about 178*. If I had it in the water cross over on the intake it would probably cycle on closer to 180*.
When I had the spal 185/165 switch it was really more like 195* on and 180* off... I didnt want my engine that hot.
My lincoln MK8 fan will cycle on at 188* and instantly pulls the temps down below 180*....even on a 100* day. Been running this setup for about 8k miles. Works great.
Melting Slicks
Joined: Sep 2004
Posts: 2,655
Likes: 19
Yes, on my 442, used Ford Windstar fans. They can be wired for hi/lo speed. I chose to wire them independedntly. One fan is controlled by the ecu (it's and LS1 swap too). The other is controlled by the adjustable thermostat AND the AC trinary switch. The thermostat temp setting is higher than the ecu setting. It comes on more often due to the AC switch.
The ecu controlled fan does about 90% of the work. The hi temp/AC switch will cycle on and off on very hot days.
The ecu controlled fan does about 90% of the work. The hi temp/AC switch will cycle on and off on very hot days.
Burning Brakes
Joined: Oct 2008
Posts: 1,037
Likes: 14
From: Mobile Alabama
Thread Starter
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Some good info here thanks guys keep it coming.
O.A.M. I cant get that link to come up?
No...maybe someday....go back and forth. Drove the old ZR1 the other day...kinda disappointed really.
installed an analog in my A body to see what temps it was really running at. Think before I go any further I am going to make a shroud for the fan and see if that doesnt help bring it down quicker at low speeds/idle then make a decision on a switch.
O.A.M. I cant get that link to come up?
BTW...Did you pickup another Z, Ron?
installed an analog in my A body to see what temps it was really running at. Think before I go any further I am going to make a shroud for the fan and see if that doesnt help bring it down quicker at low speeds/idle then make a decision on a switch.
Last edited by cv67; Sep 16, 2012 at 10:47 PM.