Electric fan info inside... - Page 2 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

orion::S14 · 01-21-2008, 01:34 PM

Quote:

Originally Posted by stinky_180

ok i have a quick question regarding relays. when using two relays, how do i wire them up using the schematics above? would i connect the second rely like this

first relay 87 ------> second relay 30?

No...wire them individually.

2 complete SEPARATE circuits for each fan (for the Altima fans, that is...)

One relay output (pin 87) goes to the blue wire (+), and the second relay's output (pin 87) goes to the green wire (+).

That way, if one fails...then one of the fan 'feeds' is still getting power, and the fan is still running on LOW.

For Altima fans...it takes both green (+) and blue (+) to get high speed...either green OR blue, and you get low.

...

What I mean is - There is a total of 4 wires that need +12v to get high on both fans...

You can group them, like in that diagram posted above...and use 2 relays...high on each fan.

Or use 4 relays, in case one burns out...and you'll still get some airflow from the low speed on that fan.

- Brian

deesz · 01-21-2008, 01:42 PM

so are taurus fans good or bad?????

stinky_180 · 01-21-2008, 02:51 PM

Quote:

Originally Posted by ericcastro

ANY SOHC GUYS??

my pictures of my setup shows a sohc.... and i'll be using the same wiring diagram as well....

stinky_180 · 01-21-2008, 03:06 PM

Quote:

Originally Posted by orion::S14

No...wire them individually.

2 complete SEPARATE circuits for each fan (for the Altima fans, that is...)

One relay output (pin 87) goes to the blue wire (+), and the second relay's output (pin 87) goes to the green wire (+).

That way, if one fails...then one of the fan 'feeds' is still getting power, and the fan is still running on LOW.

What I mean is - There is a total of 4 wires that need +12v to get high on both fans...

You can group them, like in that diagram posted above...and use 2 relays...high on each fan.

Or use 4 relays, in case one burns out...and you'll still get some airflow from the low speed on that fan.

- Brian

you
is
da
man

cycloneskate · 01-22-2008, 02:07 AM

Quote:

Originally Posted by ericcastro

are any of these wiring diagrams for SOHC ?? I have a tauras fan, but want to wire it to a temp sensor. I dont want a relay switch, because I would have to ride it all day to keep my car from getting too cool.
But I would like to put the high speed on a switch for when i am on the track or the 405.

i was thinking I would have to take a extra temp sensor from a JY 240, and put it in line. And wire the low speed to that somehow.??

ANY SOHC GUYS??

not flaming here but electricity runs the same no matter what engine you have. these very basic wiring diagrams really should work for any car. good luck!

g6civcx · 01-22-2008, 07:21 AM

Quote:

Originally Posted by orion::S14

Agreed, 100%.

My comments on this diagram:

1. Make absolutely sure that the IGN or battery power wire has a fuse on it. The fuse needs to be at the lowest rating from the group of: switch, indicator, relay, and all wiring touching these components. Protect the weakest link.
If you're running too much current through this circuit, it will burn out the switch, indicator, relays, and all the wires along the way.

2. Make sure you use at least 12gauge AWG along pins 30 and 87 and anything that touches these pins.

3. I would prefer to put the indicator on pin 87 to make absolutely sure that power is being delivered to the load. The way the indicator is wired up right now only lets you know that the switch is thrown. If the relay is busted you will not know unless you can check the fans.

It's okay for foglights because you can see when the lights are not on, but for a fan I would want to see that current is going to the fan.

ericcastro · 01-22-2008, 01:15 PM

Quote:

Originally Posted by cycloneskate

not flaming here but electricity runs the same no matter what engine you have. these very basic wiring diagrams really should work for any car. good luck!

But it doesn't

With the DOHC engine, you can wire the low speed to turn on automatically by running the wires into the AC part of the fusebox/relay box in the engine

With the SOHC engines, the relays are different in there and cannot be done this way.

So they are very different. Leaving the SOHC guys to put manual on/off swithces in thier cars. I dont want to do this, my car runs cool, and I run the risk of it being too cool If I am just guessing when to turn the fan on and off.
thats why I wanna know how to have it hooked up automatically for SOHC??

g6civcx · 01-22-2008, 04:39 PM

Quote:

Originally Posted by ericcastro

With the SOHC engines, the relays are different in there and cannot be done this way. [/B]

Both engines use a wire to engage the a/c compressor, correct? Why not just tap this wire and use a relay to turn on the fan whenever the compressor is running?

ericcastro · 01-22-2008, 07:30 PM

The DOHC engine gets wired through the relay. It wires through the AC fan/electric fan. iirc So it turns on when the engine gets too hot. The SOHC is not set up this way from what I could find out.

If I wanted to hook it to the compressor wire, I might as well just run it to my ACC, or a switch inside. I want my fan to come on only when the temp calls for it. And to turn off when the temp starts to cool.

I think I can get a sensor for a DOHC engine and put it in my radiator hose line. And this will control the fan through tempeture.

g6civcx · 01-23-2008, 10:55 AM

Quote:

Originally Posted by ericcastro

If I wanted to hook it to the compressor wire, I might as well just run it to my ACC, or a switch inside.

Note that these options are not equivalent.

I'll check my SOCH FSM and report back.

ericcastro · 01-23-2008, 03:01 PM

^thanks. I have been trying to get some info on "proper" SOHC wiring for a little while now.

s13 k3nrock · 02-17-2008, 07:32 AM

great write up, i was actually lookin to do this today
and this was exactly the info i was lookin for
thanx again and awsome feedback

s13 k3nrock · 02-17-2008, 09:19 AM

Quote:

Originally Posted by superJoy

I bought an e-fan thermostat from Summit Racing for like $20 and was planning on hooking it up on low only due to the massive current draw on high. Looks like it should be okay considering on low it pulls more air than an Altima fan. Cool.

i do have a question tho about doing it this way.
do i have to get and e-fan thermostat or can i hook it up to the one thats already on my car??
jus a lil confused on that one

superJoy · 02-17-2008, 07:44 PM

Quote:

Originally Posted by s13 k3nrock

i do have a question tho about doing it this way.
do i have to get and e-fan thermostat or can i hook it up to the one thats already on my car??
jus a lil confused on that one

Are you talking about the thermostat switch in the lower radiator hose for the A/C condenser fan? If so, I dunno. It depends on what temperatures that switch operates on... Maybe someone knows?

VoodooRhythm · 02-06-2009, 01:28 PM

Hi guys, reall good thread here, very useful info.

Would anyone be able to confirm the spec of the twin fans from a '96-'98 Maxima???
They look almost identicle to the Altima fan but have a different part No. (21481-2L700)

ANVIL · 02-06-2009, 03:38 PM

im using a SPAL E-Fan controller, with a 14" Misimoto fan, heres the specs for it:

CFM: 1900
Fan Diameter: 328mm
Fan RPM: 2200
Number of Blades :10
Current: ~5.5A
Voltage: 12V

wasnt enough to keep the RB as cool as id like so i went ahead and picked up another 14" from iLL garage

doesnt show the amp rating but the CFM is 2200 on it.

both wired to my spal fan controller, set it once and i dont have to fuck with any switches

Om1kron · 02-16-2009, 02:27 AM

fuck, this was that simple... I couldn't find for shit what the fuck these wires were, finally a diagram that explains what the three wires are.

black - chassis ground
black/red - low speed
blue - high speed.

Quote:

The two diagrams above show how to build and wire an auto relay switched 2-speed FORD TAURUS fan.
Parts needed......10 guage wire for the power circuit. 18 guage wire for the control cicuit.
Three relays..... 1) High speed relay, Tyco VF7-12V,70amps
2)Low speed relay and Aux relay, standard BOSCH relays
Two switches,,,,.1)Low speed temp. switch- Adj. Flexilite, FLX-31147 from SUMMIT.
2)High speed temp. switch from Standard Motor Products, TS-158 or TS-392.
I put the adj. low speed switch and the three relays in seperate relay boxes and mounted them in the engine comp. The high speed temp switch I mounted where one of the heater hoses went. Est. cost of parts, less the fan, is $50.00 . 10 guage wire is used in the power circuit and 18 guage in the control circuit. The 12V switched control circuit can be connected to any live connection with ignition on.
The control circuit shown is as follows..... When the temp. reaches your set low speed figure, let's say 190 deg.the low speed relay is energized thru pin 86, 85 connects to 87A of the AUX relay and pulls 30 of that relay, 87 of the low speed relay and 30 are closed sending power to the fan to run at low speed.
When the temp. reaches your high speed switch figure, let's say 210 deg. pin 86 of the AUX. relay energizes thru 85 and 30 releases from 87A of the low speed relay and connects with 85 of the high speed relay which thru 87 of that relay powers the fan to run at high speed.
ARE we confused yet?????
When the temp falls below the high speed swich figure the AUX relay will switch back to the low speed relay.
Therfore low and high speeds will never be on at the same time and you will have the following conditions...
1) No fan on.
2) Low speed on.
3) High speed on.

This set-up has worked great since installation of it and I fought heat problems for a year because of my blower set-up before this change and NO in dash switches.........

LARRY

opponheimer · 02-16-2009, 05:12 AM

Taurus fan owns all. If you have an SR with A/C get it, you retard!

ppctx · 03-14-2010, 08:34 AM

Quote:

Originally Posted by drift_student

Now, the stats of each fan are based on what fan setup this company recommends; which is based on factory specs, so please consider this. The stats may not be 100% accurate, but should give you a good idea about each fan.

Examples:

1998 Nissan Altima:
Dual speed
low: ~1200 cfm, Amp draw ~16.5A
high: ~1500 cfm, Amp draw ~22.5A

1995 Ford Taurus (3.8L)
Dual speed
low: ~2500 cfm, Amp draw ~23.75A
high: ~3800cfm, Amp draw ~46.5A

Is the cfm and amp draw listed for the altima fans for the pair of fans combined or for each individual fan.

codyace · 03-14-2010, 09:06 AM

Just a word to the wise, just be aware of how much draw that these fans use, and how much extra the Taurus ones do. With our weak alternators, and with me running a plethora of big draw items (meth injection, igintion amp, wideband, aftermarket head unit, etc etc) I noticed my altenator (while testing perfect off car) wasn't up to the ask.

(not to thread jack, but just something to consider) This is why I made my 125 AMP Quest Relocation brackets to deal with the problem. I logged my car at WOT with everything, and it was SAD to see how much draw everything had. This quest upgrade will have no issues.

PM me if you want a set

Off car

S13 (first protype, my final design is like above)

S14 (typical clearance will be same, but being my filter is there on the side rail, the hose is closer...still works great)

codyace · 03-14-2010, 09:09 AM

Quote:

Originally Posted by g6civcx

Both engines use a wire to engage the a/c compressor, correct? Why not just tap this wire and use a relay to turn on the fan whenever the compressor is running?

Which is what I did, using my derale controller.

jamg · 07-19-2013, 03:21 PM

so wiring up these fans is a fairly easy task?

Nissansota240 · 07-19-2013, 03:33 PM

Quote:

Originally Posted by jamg

so wiring up these fans is a fairly easy task?

Depends, do you have fingers?

jamg · 07-19-2013, 03:42 PM

which is a better fan? altima dual fans or a single ford taurus?

cured13 · 07-19-2013, 05:39 PM

don't forget about Lincoln Mark VIII 18-inch, dual speed fan monster

dimensions: 21 5/8" x 18 1/2" x 4 3/4")
cfm are between 4300 - 5500
draws 42 amps on high

singlecamslam · 07-19-2013, 07:53 PM

Can you guys think of a good PUSHER fan thats budget friendly? Altima fans dont cut it since they are not meant to flow that way.

S-Nation S13 · 07-19-2013, 07:57 PM

Altima fans I believe pull 30amp I have dual alti fans both have 30a in line fuses and 30amp relays .. run perfectly .. plus to having dual fans if one goes out you have a back up

Sent from my iPhone using Tapatalk

03-14-2010, 09:06 AM	#50
codyace Post Whore! Join Date: Dec 2004 Location: Poconos, PA Age: 36 Posts: 8,030 Trader Rating: (58) Feedback Score: 58 reviews	Just a word to the wise, just be aware of how much draw that these fans use, and how much extra the Taurus ones do. With our weak alternators, and with me running a plethora of big draw items (meth injection, igintion amp, wideband, aftermarket head unit, etc etc) I noticed my altenator (while testing perfect off car) wasn't up to the ask. (not to thread jack, but just something to consider) This is why I made my 125 AMP Quest Relocation brackets to deal with the problem. I logged my car at WOT with everything, and it was SAD to see how much draw everything had. This quest upgrade will have no issues. PM me if you want a set Off car S13 (first protype, my final design is like above) S14 (typical clearance will be same, but being my filter is there on the side rail, the hose is closer...still works great) __________________ *Want Air Conditioning in your SR20 Swapped car? Check out www.sr20acbrackets.com for more information! Quest Alternator Conversions for SR20!* Check my Group Buy! Tired of lousy internal gates? Go external wastegate with one of my manifolds, Check out my group buy

07-19-2013, 07:53 PM	#56
singlecamslam Post Whore! Join Date: Apr 2008 Location: Norcal Posts: 2,531 Trader Rating: (10) Feedback Score: 10 reviews	Can you guys think of a good PUSHER fan thats budget friendly? Altima fans dont cut it since they are not meant to flow that way. __________________ Nothing says racecar like a stock car with no interior.

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01-21-2008, 01:42 PM	#32
deesz Leaky Injector Join Date: Nov 2007 Location: nor cal Age: 35 Posts: 110 Trader Rating: (0) Feedback Score: 0 reviews	so are taurus fans good or bad?????

02-17-2008, 07:32 AM	#42
s13 k3nrock Join Date: Nov 2007 Location: Florida Posts: 39 Trader Rating: (1) Feedback Score: 1 reviews	great write up, i was actually lookin to do this today and this was exactly the info i was lookin for thanx again and awsome feedback

02-06-2009, 01:28 PM	#45
VoodooRhythm Join Date: Jan 2009 Location: Bristol, UK Age: 38 Posts: 1 Trader Rating: (0) Feedback Score: 0 reviews	Hi guys, reall good thread here, very useful info. Would anyone be able to confirm the spec of the twin fans from a '96-'98 Maxima??? They look almost identicle to the Altima fan but have a different part No. (21481-2L700)

02-06-2009, 03:38 PM	#46
ANVIL Zilvia FREAK! Join Date: Apr 2005 Location: Anchorage, Alaska Posts: 1,173 Trader Rating: (8) Feedback Score: 8 reviews	im using a SPAL E-Fan controller, with a 14" Misimoto fan, heres the specs for it: CFM: 1900 Fan Diameter: 328mm Fan RPM: 2200 Number of Blades :10 Current: ~5.5A Voltage: 12V wasnt enough to keep the RB as cool as id like so i went ahead and picked up another 14" from iLL garage doesnt show the amp rating but the CFM is 2200 on it. both wired to my spal fan controller, set it once and i dont have to fuck with any switches

02-16-2009, 05:12 AM	#48
opponheimer Zilvia FREAK! Join Date: Apr 2007 Location: Bikini Atoll Posts: 1,267 Trader Rating: (3) Feedback Score: 3 reviews	Taurus fan owns all. If you have an SR with A/C get it, you retard!

07-19-2013, 03:21 PM	#52
jamg Nissanaholic! Join Date: May 2009 Location: GA Posts: 2,106 Trader Rating: (7) Feedback Score: 7 reviews	so wiring up these fans is a fairly easy task?

07-19-2013, 03:42 PM	#54
jamg Nissanaholic! Join Date: May 2009 Location: GA Posts: 2,106 Trader Rating: (7) Feedback Score: 7 reviews	which is a better fan? altima dual fans or a single ford taurus?

07-19-2013, 05:39 PM	#55
cured13 Zilvia Addict Join Date: Apr 2008 Location: Almostthere Posts: 690 Trader Rating: (11) Feedback Score: 11 reviews	don't forget about Lincoln Mark VIII 18-inch, dual speed fan monster dimensions: 21 5/8" x 18 1/2" x 4 3/4") cfm are between 4300 - 5500 draws 42 amps on high

07-19-2013, 07:57 PM	#57
S-Nation S13 Post Whore! Join Date: Jan 2008 Location: LAND of the LOST Posts: 4,082 Trader Rating: (92) Feedback Score: 92 reviews	Altima fans I believe pull 30amp I have dual alti fans both have 30a in line fuses and 30amp relays .. run perfectly .. plus to having dual fans if one goes out you have a back up Sent from my iPhone using Tapatalk