budget electric fan ideas? - Toyota Nation Forum : Toyota Car and Truck Forums

Pre-88 Toyota Pickup/Hilux Discussion area for the '88 and older Toyota Pickup/Hilux.

 
LinkBack Thread Tools Display Modes
post #1 of 15 Old 06-17-2017, 06:40 PM Thread Starter
New TN User
 
Join Date: Dec 2008
Location: Santa Cruz California
Posts: 33
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
(Thread Starter)
budget electric fan ideas?

Hey all,

I have an 87 22r 4x4. Have always wanted to put in an electric fan to recover a little power from deleting the fan clutch. The price tag on the fan kit is a little steep and I have been daydreaming of possibilities. Lots of cars have fans, double fans and shrouds, and it wouldn't be too expensive to procure a fan from my local pick-n-pull. 2000 era accords have double fans and they cool my 4cylinder very well, as I drove it over shasta with the AC on in 100 degree summer weather with no issues. Has anyone done this before with success? Looking for inspiration and guidance.

Thanks y'all

"I never drive faster than I can see, besides it's all in the reflex's"
oldroller is offline  
Sponsored Links
Advertisement
 
post #2 of 15 Old 06-17-2017, 10:05 PM
Official TN Member
 
Join Date: Sep 2012
Location: Ventura Co, California USA
Posts: 200
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Thanks: 4
Thanked 29 Times in 28 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by oldroller View Post
. . . put in an electric fan to recover a little power from deleting the fan clutch . . .
I'm not sure you'll recover any power. Power for that electric fan ultimately comes from the engine too. Converting mechanical rotation to electrical power and then back to mechanical rotation sounds a bit inefficient. It might consume more power.

But it's all small potatoes. What are we talking about? A quarter horsepower? If you like electric fans, then I would go for it.

How do you plan to control the fan? Tap into the existing thermoswitch? Or install a new one?
Wekadog is offline  
post #3 of 15 Old 06-17-2017, 11:04 PM Thread Starter
New TN User
 
Join Date: Dec 2008
Location: Santa Cruz California
Posts: 33
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
(Thread Starter)
I have no idea. I am sure I can physically mount an electric fan from some donor vehicle and remove the old clutch fan, but after that I am clueless.

"I never drive faster than I can see, besides it's all in the reflex's"
oldroller is offline  
Sponsored Links
Advertisement
 
post #4 of 15 Old 06-17-2017, 11:48 PM
Official TN Member
 
Join Date: Sep 2012
Location: Ventura Co, California USA
Posts: 200
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Thanks: 4
Thanked 29 Times in 28 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by oldroller View Post
I have no idea. I am sure I can physically mount an electric fan from some donor vehicle and remove the old clutch fan, but after that I am clueless.
I haven't done it myself, but I've read that Ford Taurus fans are especially popular for this mod. It seems they're quite thin.

Some people tap into Thermoswitch 1, and others find an unused coolant port, remove the plug and install a dedicated fan switch. That's the way I would go. TS1 goes to the computer. I would worry about injecting transients and damaging my expensive ECU. Besides, with a dedicated switch you can choose any temperature you like. Use a relay, of course, to minimize current in the switch.

It might be nice to have a "fan on" switch on the dashboard too. For those occasions when you want to take control of the cooling.
Wekadog is offline  
post #5 of 15 Old 06-18-2017, 01:03 AM
TN Post Wh*re
 
Bitter's Avatar
 
Join Date: Sep 2006
Location: Near Chicago
Posts: 13,070
Mentioned: 29 Post(s)
Tagged: 0 Thread(s)
Quoted: 1623 Post(s)
Thanks: 7
Thanked 994 Times in 941 Posts
Lifetime Supreme Member
iTrader Score: 0 reviews
Plenty of places sell fan controllers with coolant sensors and adjustable control boxes that'll run the fans on and off at whatever temps you like, could be on at 210 and off at 190 or on at 205 and off at 195, etc. The catch might be AC? Does the vehicle have AC? You need the AC system to be able to command the fans on to work properly, you'll have to tap into the magnetic clutch circuit to have it also run the fan relay.

Then you get into the dilemma of wanting the fans to run two speeds, cause you don't need full blast fans on high cooling all the time, which means you need a fancier fan controller of course.
Bitter is offline  
post #6 of 15 Old 06-18-2017, 02:07 AM Thread Starter
New TN User
 
Join Date: Dec 2008
Location: Santa Cruz California
Posts: 33
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
(Thread Starter)
Thanks all for the help and advice.

Good to know about the ford taurus fan, I haven't been able to find a good build/tutorial on this mod.

The vehicle does not have AC. I can turn a wrench but electrical stuff boggles me. Can someone provide an example of the type of controller I need, and how does one set the temperature?

"I never drive faster than I can see, besides it's all in the reflex's"
oldroller is offline  
post #7 of 15 Old 06-18-2017, 03:07 AM
TN Post Wh*re
 
Bitter's Avatar
 
Join Date: Sep 2006
Location: Near Chicago
Posts: 13,070
Mentioned: 29 Post(s)
Tagged: 0 Thread(s)
Quoted: 1623 Post(s)
Thanks: 7
Thanked 994 Times in 941 Posts
Lifetime Supreme Member
iTrader Score: 0 reviews
https://www.summitracing.com/parts/flx-31165/overview/

That'll run the fans starting at low speed at the set temp and ramp them up or down as needed, or so it seems from the description, 45Amp is a lot of cooling fan power. The less expensive kits are on/off only, this setup will run the fan like it came with an electric fan from the factory, and in a similar fashion to the mechanical fan, blowing more or less in relation to temps.
https://www.flex-a-lite.com/pdf_inst...1165-99943.pdf Installation requires some wiring work but the directions are pretty straight forward here, a good crimping tool and I highly suggest 3M heat seal butt connectors and heat seal spade connectors instead of what comes in their kit. Heat seal stuff is water proof once it's heated and shrank, theres glue inside that makes it totally impervious so it'll make a good connection that lasts the lifetime of the truck. It comes with a sensor that's jammed into the radiator, but I think you can buy a coolant temp sensor to install in the engine and use that instead, which is what I would suggest. May want to email them to confirm that. You can also buy just the bare controller and put the rest of the kit together yourself if you'd rather do that, it's what I would do so I could pick out better connectors and parts than it comes with.
Bare module: https://www.summitracing.com/parts/flx-33054/overview/

A different module that should do the same thing: https://www.summitracing.com/parts/hda-3655/overview/ Doesn't list how many amps it can handle though, may need to find the install instructions or ask Hayden directly for more information about how it controls the fans and how many amps it'll run. Looks like a well made unit from the outside at least.
Bitter is offline  
post #8 of 15 Old 06-18-2017, 11:01 AM
Official TN Member
 
Join Date: Sep 2012
Location: Ventura Co, California USA
Posts: 200
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Thanks: 4
Thanked 29 Times in 28 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by Bitter View Post
. . . this setup will run the fan like it came with an electric fan from the factory, and in a similar fashion to the mechanical fan, blowing more or less in relation to temps.
That's a nice setup. I think anyone would be happy with that one.

At the other end of the spectrum, if rock bottom cost is the objective, a simple on/off thermal switch and relay will do the job for about $10. Add $30 for a junk yard fan, and you have a system that anyone can afford.

Here's how you would wire the basic system. The "in car" switch is just the ignition switch.


Last edited by Wekadog; 06-18-2017 at 11:05 AM.
Wekadog is offline  
post #9 of 15 Old 06-18-2017, 11:40 AM
TN Post Wh*re
 
Bitter's Avatar
 
Join Date: Sep 2006
Location: Near Chicago
Posts: 13,070
Mentioned: 29 Post(s)
Tagged: 0 Thread(s)
Quoted: 1623 Post(s)
Thanks: 7
Thanked 994 Times in 941 Posts
Lifetime Supreme Member
iTrader Score: 0 reviews
Correct, but I don't think you'd want a disable switch in the car cause you could accidentally hit it and turn the fan off! If anything you'd want a manual switch to ground pin 85 in the cab so he can manually flip the fan on if needed for some reason. As long as the temp switch has the right turn on temp it should be OK, about 10-15F over thermostat temp so it'll open reliably.
Bitter is offline  
post #10 of 15 Old 06-18-2017, 01:27 PM
Official TN Member
 
Join Date: Sep 2012
Location: Ventura Co, California USA
Posts: 200
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Thanks: 4
Thanked 29 Times in 28 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by Bitter View Post
I don't think you'd want a disable switch in the car . . .
Agreed. But energizing the fan relay through the ignition switch makes sense. There's little need for cooling when the engine's not running. There might be times after a hard run where you would like a little cool-down, but cooling the radiator when the water pump's not running isn't very helpful.

You could do it either way. From switched 12V or unswitched. As long as the circuit is appropriately fused, it doesn't really matter.
Wekadog is offline  
post #11 of 15 Old 06-18-2017, 07:20 PM
TN Post Wh*re
 
Bitter's Avatar
 
Join Date: Sep 2006
Location: Near Chicago
Posts: 13,070
Mentioned: 29 Post(s)
Tagged: 0 Thread(s)
Quoted: 1623 Post(s)
Thanks: 7
Thanked 994 Times in 941 Posts
Lifetime Supreme Member
iTrader Score: 0 reviews
Ignition switched yes, good idea, just no kill switch on the fan! I've seen people cook engines cause they bumped the switch or forgot to turn it on.
Bitter is offline  
post #12 of 15 Old 06-19-2017, 02:13 AM Thread Starter
New TN User
 
Join Date: Dec 2008
Location: Santa Cruz California
Posts: 33
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
(Thread Starter)
Thanks for the advice and wiring diagrams. I am surprised this isn't a common mod, how many of us have discount cards to junkyards? I have mine!

"I never drive faster than I can see, besides it's all in the reflex's"
oldroller is offline  
post #13 of 15 Old 06-19-2017, 02:14 PM
Official TN Member
 
Join Date: Sep 2012
Location: Ventura Co, California USA
Posts: 200
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Thanks: 4
Thanked 29 Times in 28 Posts
iTrader Score: 0 reviews
[QUOTE=oldroller;12594778] . . . I am surprised this isn't a common mod . . . QUOTE]


I didn't even know they have discount cards for junkyards. You learn something new every day.


I suspect the reason more people don't do this mod is that the OEM design works so well. And when it's time to sell, a buyer doesn't want modifications.


But all that's really important is that you're happy with it. I look forward to hearing how it works out for you.
Wekadog is offline  
post #14 of 15 Old 06-25-2017, 02:08 PM
Soylent Green sales
 
fourwd1's Avatar
 
Join Date: Jul 2006
Location: the Socialist State of Maryland
Posts: 11,020
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 296 Post(s)
Thanks: 30
Thanked 695 Times in 642 Posts
Lifetime Supreme Member
iTrader Score: 1 reviews
Quote:
Originally Posted by Bitter View Post
Correct, but I don't think you'd want a disable switch in the car cause you could accidentally hit it and turn the fan off! If anything you'd want a manual switch to ground pin 85 in the cab so he can manually flip the fan on if needed for some reason. As long as the temp switch has the right turn on temp it should be OK, about 10-15F over thermostat temp so it'll open reliably.
A disable switch could be handy if you're offroad crossing deep water.

_No THANKs necessary !
84 4Runner rockcrawler - ARBed 5.29's, 36" TSLs, dual t-cases w/4.7 crawler gear, Chevys, 30 spline Marlins
83 p/u trail rig - Buick 231 V6, Weiand intake, Holley 4 bbl, TH-350 auto w/700R4 low gearset, dual tanks ...
89 4Runner - stock
http://www.cardomain.com/id/fourwd1
fourwd1 is offline  
post #15 of 15 Old 06-25-2017, 06:50 PM
TN Post Wh*re
 
Bitter's Avatar
 
Join Date: Sep 2006
Location: Near Chicago
Posts: 13,070
Mentioned: 29 Post(s)
Tagged: 0 Thread(s)
Quoted: 1623 Post(s)
Thanks: 7
Thanked 994 Times in 941 Posts
Lifetime Supreme Member
iTrader Score: 0 reviews
I guess, but wouldn't water passing through the radiator be enough to drop the engine temp low enough to keep the fan off anyway? Could just put a sump pump float in the circuit :p
Bitter is offline  
Sponsored Links
Advertisement
 
Reply

  Toyota Nation Forum : Toyota Car and Truck Forums > Toyota Truck, SUV and Van Forums > Hilux (Pickup) Forum > Pre-88 Toyota Pickup/Hilux

Bookmarks

User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome
Back