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Electric cooling fans - Two pullers or One pusher?


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#41 datzenmike

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Posted 02 October 2017 - 06:13 PM

Wut in the fuk?


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#42 flatcat19

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Posted 03 October 2017 - 11:25 AM

34989967434_881a457d79_k.jpgUntitled by raymond medeiros, on Flickr
 
So good looking.




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#43 G8KeaPoR

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Posted 06 October 2017 - 07:23 AM

Not to jump in late but I'm out in Northern Virginia have an L20b with two pushers and they are garbage when I get into traffic unless you like the smell of antifreeze coming out of the overflow tube that is.  If you can fit a shroud and a puller I say go that route mainly cause you have a directed shroud.  I have been thinking of trying to use a VW passat fan I had bought for my old TDI before they told me they were going to give me 23k for a car with 100k miles. (dieselgate buyback.) It is a fairly thin unit so maybe it will fit..... we will see.


I hate when people go cheap on repairs or modifications.  If you were just going to light your money on fire using band-aid fixes you might as well have given it to me.


#44 Draker

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Posted 06 October 2017 - 07:26 AM

Not to jump in late but I'm out in Northern Virginia have an L20b with two pushers and they are garbage when I get into traffic unless you like the smell of antifreeze coming out of the overflow tube that is.  If you can fit a shroud and a puller I say go that route mainly cause you have a directed shroud.  I have been thinking of trying to use a VW passat fan I had bought for my old TDI before they told me they were going to give me 23k for a car with 100k miles. (dieselgate buyback.) It is a fairly thin unit so maybe it will fit..... we will see.

 

What radiator and what brand of fans? Not all fans are created equal.

 

I do agree though, shroud is important, and puller would be ideal.


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#45 DatMo

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Posted 06 October 2017 - 09:48 AM

I'm running 2 push fans in the front of the car and one push fan because of the lack of space I have.

I don't have any pictures of my car at the moment but my car hasn't been over heating and I spent a total of about 50?


Located in SoCal.

Just trying to figure it out.


#46 datzenmike

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Posted 06 October 2017 - 11:02 AM

Watch the fans. Make sure they are actually pushing and not pulling.

 

Last weekend I started and warmed up my 710. Fans come on for 10 seconds and off for about one minute. Seems that in the summer when it was warmer it was 10 and off for 30 sec.


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#47 G8KeaPoR

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Posted 18 October 2017 - 12:20 PM

What radiator and what brand of fans? Not all fans are created equal.

 

I do agree though, shroud is important, and puller would be ideal.

To be honest I have no clue.  Pretty sure given the crap relay and controls for it that it is an I DA CHINA guaranteed to overheat your car branded fans...  The radiator has a nismo cap but that doesn't mean much these days so I am going to assume that it is crap too and even if it wasn't they did a number on it when they put the fan fasteners through the core.


I hate when people go cheap on repairs or modifications.  If you were just going to light your money on fire using band-aid fixes you might as well have given it to me.


#48 Draker

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Posted 18 October 2017 - 12:45 PM

I just got the Koyo on Monday. I'll see about getting it mocked up and see what space I'm dealing with.


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#49 G-Duax

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Posted 19 October 2017 - 08:27 AM

I've run a Sirocco radiator for years, with 1) 10" pusher, and 1) 10" puller, with them offset to cover the width of the core.

Works fine, even on 105 degree Texas weather.

One fan is wired up with the ignition, and the other through the Sirocco temp switch.

 

Only thing, the cheap ass fans I buy only last 2 years at the most.

Maybe if I wasn't a cheap ass, and buy better quality fans, that would be less of a problem.


"All of a sudden it started making noise, then started losing power. I limped the car home and tried to get it up the driveway, the engine just died."

 

Why do people do this?

A $100 tow bill is never as much as the extra damage you cause by trying to "limp the car home".

 

Don't be that person !


#50 datzenmike

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Posted 19 October 2017 - 10:10 AM

What about cars that come from the factory with fans? They run for more than a year or two. Fans shouldn't be on continuously. If they are, you might as well have a mechanical one.


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#51 Scgreen620

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Posted 19 October 2017 - 08:04 PM

Idk about the 7.5 but I can barely here the 10s on mine. I was thinking of adding a small light that will come on when the fans do



If you do add a light can you show me how you wired it?

#52 Scgreen620

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Posted 19 October 2017 - 08:09 PM

35362880353_bc91f67f4d_k.jpgUntitled by raymond medeiros, on Flickr
 
No ugly fans..

omg that's sexy

#53 Lockleaf

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Posted 19 October 2017 - 08:47 PM

If you do add a light can you show me how you wired it?


Run the fans on a relay. Wire the light in to low amperage side of the circuit. Doesn't matter if it is on power side or ground side of the low amp circuit. When the circuit is activated by whatever switch (automatic or manual), the light will turn on.

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#54 Scgreen620

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Posted 23 October 2017 - 10:54 PM

Run the fans on a relay. Wire the light in to low amperage side of the circuit. Doesn't matter if it is on power side or ground side of the low amp circuit. When the circuit is activated by whatever switch (automatic or manual), the light will turn on.


Do you have a diagram?

#55 Lockleaf

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Posted 24 October 2017 - 07:18 AM

This one is a bit different than what i described.

electric-fan-wiring-diagram-Also-here-is

Here they put the light on the high power side and gave it it's own ground.

The way i described would put the light on the yellow wire coming from 85. Install it in line before the switches, power in one side and out the other, so it grounds through a switch when the switch turns on.

Both work fine.

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#56 G8KeaPoR

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Posted 25 October 2017 - 02:43 AM

Watch the fans. Make sure they are actually pushing and not pulling.

 

Last weekend I started and warmed up my 710. Fans come on for 10 seconds and off for about one minute. Seems that in the summer when it was warmer it was 10 and off for 30 sec.

So mine did that initially and it turned out to be a bad relay.  If I tapped on it then it would turn back on.  Replaced the relay and that solved that.  FYI my fans are setup to run for a few minutes after I shut off the car just like Ze German cars do. When I replaced the relay I hooked it up that way (temporarily) since it was running a bit hot to try and cut down on heat soak.  Anyway since I am ordering my wire this week I think I am going to replace my fans and radiator too so I only have to wire everything up once.


I hate when people go cheap on repairs or modifications.  If you were just going to light your money on fire using band-aid fixes you might as well have given it to me.


#57 G8KeaPoR

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Posted 25 October 2017 - 02:53 AM

 

I've run a Sirocco radiator for years, with 1) 10" pusher, and 1) 10" puller, with them offset to cover the width of the core.

Works fine, even on 105 degree Texas weather.

One fan is wired up with the ignition, and the other through the Sirocco temp switch.

 

Only thing, the cheap ass fans I buy only last 2 years at the most.

Maybe if I wasn't a cheap ass, and buy better quality fans, that would be less of a problem.

 

Are you using the Scirocco shroud too?  Just curious if I should grab one of those from world pac or go with the koyo or a fluidyne or something.


I hate when people go cheap on repairs or modifications.  If you were just going to light your money on fire using band-aid fixes you might as well have given it to me.


#58 datzenmike

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Posted 25 October 2017 - 04:52 AM

As long as the power is from a non switched source the fans will come on or stay on after the engine is shut off. I see no advantage to shutting them off with the key.


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#59 Draker

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Posted 09 November 2017 - 07:39 PM

So I figured I'll pull the trigger on some pushers and test fit them as pullers. Glad I went that route because the fans are too wide to fit as pullers. Even if, I'd have to run a 8" or 9" and a 6.5" which is less cfm.

Mock up as puller. No clearance.

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#60 Draker

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Posted 09 November 2017 - 07:43 PM

Post image is being a bitch... more pics later
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