What Electric fan setup do you use on your G50?

[subtle_driver]

I'm going to install an electric fan setup to replace my clutch fan. Does anyone know what works and fits well? What options do i have?

I tried to search but I got mostly s13 posts.

thanks!

[maxnix]

Non better than the ciscous clutch that Nissan designed.

Not enough alternator margin to power a fan powerful enough for those hot summer idling days stuck in traffic.

[Infinitiguy19]

I must agree with Brian because the only upside of a electric fan is to keep the fan(s) on after the car has been shut off in the summer, to prolong the life everything in the engine bay.

But other than that plastic electric fans crack like the OEM one, They pull just as much power from the engine as the OEM one And failure is more likely to occur with a plastic electric fan than the OEM one In My Opinion.

[subtle_driver]

I'm not idling in traffic much with my car. I race it at Rally, autocross, drag and drift. the stock fan will break. it will also shorten the life of the water pump. I have killed 3 radiators with stock fans. I have never broken one with an electric fan setup.

Did you mean Viscous?Don't get me wrong, i know the stock setup works fine for daily driving, but speaking from experiance, I don't think its gonna hold up for what I'm doing with it

Does anyone have an electric fan setup on their g50 q45?If so how do you like it and how did you go about it? What is the cfm of the stock fan at idle?

thanks!
Modified by subtle_driver at 11:37 PM 2/15/2010

[Skibane]

the stock fan will break.

Cracks in the fan blades are common; fan breakage is not. To date, nobody has posted about a broken Q45 fan blade on the NICO forums.

Quote »it will also shorten the life of the water pump.[/quote]With the original fan and clutch (and with occasional coolant replacement), average Q45 water pump life is well over 150K miles.

There is a good reason why Nissan engineers went with a belt-driven cooling fan on the Q: IT WORKS BETTER THAN AN ELECTRIC FAN.

[subtle_driver]

Cracks in the fan blades are common; fan breakage is not. To date, nobody has posted about a broken Q45 fan blade on the NICO forums.

With the original fan and clutch (and with occasional coolant replacement), average Q45 water pump life is well over 150K miles.

There is a good reason why Nissan engineers went with a belt-driven cooling fan on the Q: IT WORKS BETTER THAN AN ELECTRIC FAN.

Has anyone on this forum ever Rally raced a Q45 g50 off-road, Autocross etc... The stock fan robs throttle response when the clutch is engaged. It has a danger of coming into contact with something or falling apart when going sideways at 50mph+ in the air then landing. I want my water pump to last over 150k. I want more engine room. I want to be able to control when my fan turns on. Nissan engineers went with a belt-driven fan because they didn't know anyone would use it for what i was using it for.

[subtle_driver]

I went ahead and ordered two 16" fans that pull 4,000cfm. We'll see how that works out.I have decided in the long run to wire them through some BMW 50 amp relays that are fed the on/off signal by the ECU and reprogram it to actuate at a certain temperature. I have a race coming up this weekend, so I'm just gonna install my timing chain set, install the z32 front adjustable control arms to change to -2.5 degrees of camber and wire the fans with manual switches for now.

I'll post some updates when its done.

[Romeo5k]

i swear someone did something similar to this.. Then again, maybe im getting it mixed up with the extra fans setup they added for the transmission. But it wasnt replacing the clutch fan.. meh.. im talking out the side of my neck maybe.!

[Skibane]

Quote »The stock fan robs throttle response when the clutch is engaged. [/quote]So does an electrical fan when it is operating.

For identical airflow, an electric fan requires as much engine power as a belt-driven fan. Any power you save by eliminating the belt-driven fan is offset by the extra power demanded by your alternator in order to spin your new electric fan. In the physics world, there is no such thing as a free lunch.

[Romeo5k]

. In the physics world, there is no such thing as a free lunch.

Yes it is.. i remember way back when, i got free lunch from school with this lunch card. I had a lunch card.. all i had to do was swipe it.. and free lunch..!!

[subtle_driver]

So does an electrical fan when it is operating.

For identical airflow, an electric fan requires as much engine power as a belt-driven fan. Any power you save by eliminating the belt-driven fan is offset by the extra power demanded by your alternator in order to spin your new electric fan. In the physics world, there is no such thing as a free lunch.

I just got my twin 16" fans in today! they look nice! I may have some time tomorrow to install them after work and after I sell one of my engines.

I know It would be ideal to have identical or more airflow than the stock fan. I asked if anyone knows what it is. Do you know?

It seems difficult to get direct answers to questions.

In Grid, fan is on. at starting line, fan is on. Flag drops, fan is off. Return from run, fan goes back on. = free power on demand.

When I was in middle school, I had a free lunch card too! haha! I was in a low income family, the food was pretty gross, i can't seem to forget those dried up carrot sticks.
Modified by subtle_driver at 11:40 PM 2/16/2010

[Skibane]

Quote »In Grid, fan is on. at starting line, fan is on. Flag drops, fan is off. Return from run, fan goes back on.[/quote]On drive home, car overheats and warps heads.

Sweet!

[qship96]

I agree, bad idea to get rid of mechanical factory fan- but live and learn.

[subtle_driver]

The electric fan works great! I have consult hooked up and the temperatures are just as stable as with the mechanical fan. I took it on a long hard drive up a mountain road with no problems!

[Romeo5k]

pictures?

[subtle_driver]

I'll get pics up in a few days, I'm busy running a racing event.

I ended up using one fan and wired it so i turns on and off automaticly when the ECU tells it to.

I love being able to access everything on the front of the engine with almost no effort!

[Infinitiguy19]

You have a Nissan Consult?

How were you able to set it up?

[subtle_driver]

I have a tuned ecu from E-mance.comhe can customize at what temperature when you want electric fans to turn on and off.

i run the signal from the condensor fan wire.

i have consult and snap on scanner to check whats going on with the q45's ecu.

[Infinitiguy19]

Did you set it so the fans go on at 177*F?

I want to get me a spare condesor fan then I want to wire it so that the fan goes off at 177*F there by keeping EVERYTHING nice and cool.

I am no expert though so I do want to hear what everyone else has to say.

[subtle_driver]

no, they are set at 190deg.

if i turn it on at 177 it will stay on, as the coolant hardly dips below that unless you coast downhill with the heater on in winter for 15 minutes.

[subtle_driver]

i can change the temperature to whatever i want just reflash the chip.

or you can just get a 1990 240sx thermo switch that attaches to the lower radiator hose, then get a coolant temp switch from a 200sx. that switches on at 170 i believe?

[subtle_driver]

Here are some pictures of my setup.



Modified 18" fan. (spaced blade towards the motor for increased flow through radiator)

Wired with BMW 50amp relay I had lying around and 30amp? Nissan fuse.

look at all that room!

[qship96]

Looks like you need to scrub that engine, it is filthy!!!!

[subtle_driver]

that it is! i'm replacing the timing chain guides and doing a VC gasket job. then I'll clean it. Gets dirty when I go drag racing.