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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Sat, Jul-19-2014, 10:38:11 PM   #1
infinkc
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Default How to mount a Spal Electric fan to the stock shroud

I searched and could not find exactly how people were attaching a Spal fan to their cars, so i took a few pictures while installing mine.

It cost $130 for the fan and relay, couldn't be happier.

I went with a Spal 30101516 model, its a 1610CFM with a low profile.





***EDIT i have been told that the fan from Amazon does not always come with the brackets, so you may need to order them as well. (You need 2 brackets)





I used a Derale Fan relay harness 16738 180F Temperature switch.





I placed the fan inside the stock shroud with the wire on the top.

You need to get (4) 1/4-20 x1/2" nuts and bolts to mount it to the shroud.

just simply drill the holes and bolt down the fan.


The fan comes with 4 brackets, so you do not need to purchase them separate.

you need to cut the metal strap on the bracket down to the length i have in the picture.

Install the bracket onto the fan and use 2 more nuts/bolts to secure it down. It will sit level in this position. The bracket can go on 2 different ways, install it so the bracket is closer to the stock shroud (lock nuts facing the front of the car)



The fan thermostat you push into the radiator fins. i cut the probe down to about 1 1/2" so it would clear. I installed it next to the inlet. Once the plastic fan shroud is installed it presses on the sensor so it will not pop out.



Here is a picture showing how much clearance the fan has to the water pump.



I mounted the fan relay up near the firewall. the other relay there is for my AE's. I wired the relay slightly different than the instructions that come with it. I ran a 12v ignition to the relay(same wire i used for the AE's), then from the relay ran a wire to the temperature switch. The other side of the temperature switch i grounded.


Last edited by infinkc; Thu, Oct-16-2014 at 05:11:08 PM.
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Old Sat, Jul-19-2014, 10:47:27 PM   #2
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Default Re: How to mount a Spal Electric fan to the stock shroud

Nice one.
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Old Sat, Jul-19-2014, 11:05:18 PM   #3
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Default Re: How to mount a Spal Electric fan to the stock shroud

Sweet! Been looking for info how to wire one of these without having to install a bung into the radiator. Does it kick on like stock, just function more efficiently?
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Old Sat, Jul-19-2014, 11:16:09 PM   #4
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Default Re: How to mount a Spal Electric fan to the stock shroud

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Originally Posted by TheGenius46M View Post
Sweet! Been looking for info how to wire one of these without having to install a bung into the radiator. Does it kick on like stock, just function more efficiently?
Well the stock one is clutch driven so the speed depends how hot the clutch is. 180 deg seems to be what's recommended by many for the fan to kick on. It will turn off if it drops 10deg also. Driving around today at 90deg out, it worked great. I thought it would be louder, but it's fairly quiet.

The main reason I swapped it out was to take the load off the water pump and also so I don't have to worry if a stock fan blade snaps and takes everything with it.
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Old Sun, Jul-20-2014, 04:55:21 AM   #5
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Default Re: How to mount a Spal Electric fan to the stock shroud

Thank you!
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Old Sun, Jul-20-2014, 04:59:32 AM   #6
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Default Re: How to mount a Spal Electric fan to the stock shroud

Good job and clean install
I was thinking of doing this for a while, wish u would have posted this yesterday, just paid for the mishimoto fan kit.
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Old Sun, Jul-20-2014, 11:19:35 AM   #7
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Default Re: How to mount a Spal Electric fan to the stock shroud

Any writeup on the wiring (what wires to tap or splice)

Sent from my SPH-L900 using Tapatalk
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Old Sun, Jul-20-2014, 02:26:19 PM   #8
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Default Re: How to mount a Spal Electric fan to the stock shroud

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Originally Posted by dunkman23 View Post
Any writeup on the wiring (what wires to tap or splice)

Sent from my SPH-L900 using Tapatalk
This. Nice job OP. I like DIYs and people who take time to post them. You're helping the community when you do so.
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Old Sun, Jul-20-2014, 08:19:14 PM   #9
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Default Re: How to mount a Spal Electric fan to the stock shroud

Quote:
Originally Posted by dunkman23 View Post
Any writeup on the wiring (what wires to tap or splice)

Sent from my SPH-L900 using Tapatalk
It's fairly simple so I didn't post all the details. It's just a standard relay.
12 from the battery jump post to terminal 30
Terminal 87 to the fan +
Terminal 85 to one side of the thermostat switch
Terminal 86 to 12v ignition( I used the red wire with white stripe)
Picture from FastM showing the wire used.


Since the fan wire was on top, it fits perfectly through the shroud as there is a square cutout.

You can always come seee and I can help ya.

Last edited by infinkc; Mon, Jul-21-2014 at 10:26:39 PM.
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Old Mon, Jul-21-2014, 01:07:13 AM   #10
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Default Re: How to mount a Spal Electric fan to the stock shroud

Does anyone know the CFM of the stock fan?
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Discussing How to mount a Spal Electric fan to the stock shroud in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)