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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 Sun, Jan-06-2019, 01:41:58 AM   #21
WOLFN8TR
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Default Re: Electric fan upgrade

I ran the Mishimoto fan mounted inside the stock fan shroud using a PWM unit and it worked good. We have have summer temps between 100-120 degrees so I kept the Aux Fan as well.

All fans have different depths. The Spal 30101516 and the Mishimoto Fan will fit into the stock fan shroud because of their thickness. The Spal 2049, 2082 etc will not.

I mounted the Mishi Fan offset toward the drivers side as far as possible inside the shroud. You can see how close it is to the water pump shaft. The photo is looking up from under the car.

I recently purchased the Spal 2082 and the N15 Electric Fan Mounts with a Koyorad radiator. The Spal 2049 and 2082 have approx 500 more CFM's than the Mishimoto fan.

Get the Spal 2049 or 2082.
http://www.m3forum.net/m3forum/showthread.php?t=599479

N15 Electric Fan Mounts
http://www.m3forum.net/m3forum/showthread.php?t=589875









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Old Sun, Jan-06-2019, 01:52:10 AM   #22
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Default Re: Electric fan upgrade

Quote:
Originally Posted by WOLFN8TR View Post
I ran the Mishimoto fan mounted inside the stock fan shroud using a PWM unit and it worked good. We have have summer temps between 100-120 degrees so I kept the Aux Fan as well.

All fans have different depths. The Spal 30101516 and the Mishimoto Fan will fit into the stock fan shroud because of their thickness. The Spal 2049, 2082 etc will not.

I mounted the Mishi Fan offset toward the drivers side as far as possible inside the shroud. You can see how close it is to the water pump shaft. The photo is looking up from under the car.

I recently purchased the Spal 2082 and the N15 Electric Fan Mounts with a Koyorad radiator. The Spal 2049 and 2082 have approx 500 more CFM's than the Mishimoto fan.

Get the Spal 2049 or 2082.
http://www.m3forum.net/m3forum/showthread.php?t=599479

N15 Electric Fan Mounts
http://www.m3forum.net/m3forum/showthread.php?t=589875











what controller are you running? can you link everything you needed for that controller to run? thanks!
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Old Sun, Jan-06-2019, 05:24:49 AM   #23
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Default Re: Electric fan upgrade

Does anyone happen to know the CFM of the Aux fan?

I have often thought about deleting both Mech and Aux and putting a more powerful one in place of the Aux as there is more room.

Currently I run the Aux and a Mishi fan but I would like to delete one of them and just run one fan for simplicity and weight
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Old Sun, Jan-06-2019, 12:39:14 PM   #24
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Default Re: Electric fan upgrade

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Originally Posted by STAATS View Post
Does anyone happen to know the CFM of the Aux fan?



I have often thought about deleting both Mech and Aux and putting a more powerful one in place of the Aux as there is more room.



Currently I run the Aux and a Mishi fan but I would like to delete one of them and just run one fan for simplicity and weight


I cant speak to the cfm, but i pulled both fans and replaced them with a spal 2049 wired direct to the original fan computer, or whatever its called. I do not track my car, but even in the summer with the a/c running, my temps never went past 210F. Worked like a charm, two wires to connect and then i made the mounts to bolt onto the radiator with about 1/4 of standoff.

I am quite certain you could run it for a dd all day, for a track car id guess its fine but dont let my lack of experience there blow up your motor


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Old Sun, Jan-06-2019, 04:31:01 PM   #25
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Default Re: Electric fan upgrade

There seems to be a lot of focus on increasing CFM. Unless the fan is constantly running and still not providing sufficient cooling, the CFM is enough.

As I noted, the Mishimoto barely comes on in normal driving, and the coolant temp does not go much over 200 even when tracking (this is in Phoenix, AZ). For 99.9% of us, the CFM could be quadruple and it would make no difference (the fan would simply cycle more often and for less time). That said, those who plan to run a 24-hour race in the Gobi Desert may benefit from a bit more CFM.

If you are experiencing cooling problems, the issue may be another component in your cooling system. Increasing CFM with a 15-year old radiator probably won't fix anything.
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Old Sun, Jan-06-2019, 04:58:30 PM   #26
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Default Re: Electric fan upgrade

Quote:
Originally Posted by erickrayos View Post
what controller are you running? can you link everything you needed for that controller to run? thanks!
You will need a PWM 50 AMP Controller, temp sensor and radiator hose adapter. I would also install a separate 40amp fuse for added protection. Use 10 gauge wire for the fan control leads (+ and -) and 16 gauge for the rest. He now has a new "No Buzz" controller so you will not need the separate Buzz Box like I have. You can use any inline radiator adapter, I used the Mishimoto one.

There is a wiring diagram on his website for the controller.

NB-50 NO "BUZZ" 50 AMP Controller
http://www.autocoolguy.com/product-p...o-buzz-50-amps

Brass Plug Temp Sensor
http://www.autocoolguy.com/product-p...s-plug-sensors

Inline Radiator Adapter
http://www.autocoolguy.com/product-p...-inline-sensor
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Old Sun, Jan-06-2019, 05:04:22 PM   #27
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Default Re: Electric fan upgrade

Quote:
Originally Posted by M3AZ View Post
There seems to be a lot of focus on increasing CFM. Unless the fan is constantly running and still not providing sufficient cooling, the CFM is enough.

As I noted, the Mishimoto barely comes on in normal driving, and the coolant temp does not go much over 200 even when tracking (this is in Phoenix, AZ). For 99.9% of us, the CFM could be quadruple and it would make no difference (the fan would simply cycle more often and for less time). That said, those who plan to run a 24-hour race in the Gobi Desert may benefit from a bit more CFM.

If you are experiencing cooling problems, the issue may be another component in your cooling system. Increasing CFM with a 15-year old radiator probably won't fix anything.
Good points. Refresh your cooling system (thermo, rad, wp, coolant, o-rings, sensors) if it's got 80k+ and/or 15 years imo.
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Old Sun, Jan-06-2019, 05:29:28 PM   #28
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Default Re: Electric fan upgrade

Quote:
Originally Posted by WOLFN8TR View Post
You will need a PWM 50 AMP Controller, temp sensor and radiator hose adapter. I would also install a separate 40amp fuse for added protection. Use 10 gauge wire for the fan control leads (+ and -) and 16 gauge for the rest. He now has a new "No Buzz" controller so you will not need the separate Buzz Box like I have. You can use any inline radiator adapter, I used the Mishimoto one.



There is a wiring diagram on his website for the controller.



NB-50 NO "BUZZ" 50 AMP Controller

http://www.autocoolguy.com/product-p...o-buzz-50-amps



Brass Plug Temp Sensor

http://www.autocoolguy.com/product-p...s-plug-sensors



Inline Radiator Adapter

http://www.autocoolguy.com/product-p...-inline-sensor


Thanks for the info bud
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Old Sun, Jan-06-2019, 05:57:12 PM   #29
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Default Re: Electric fan upgrade

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Originally Posted by 0-60Motorsports View Post
Thanks for the info bud
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Build Thread - S54 Vanos Thread - Hi-Temp Oring Kits!

BAVSOUND Stage 1 - UltraGauge - Valentine One - Orion V4's - ARC-8's
TTFS Engine/SMG Tune/CSL 255 - SGT Headers/Sect 1/SCZA - Evolve Eventuri
VIS XTS CF Hood - CF Lip/Console/Diffuser - OE CSL Trunk - BWS 500S 9k/11k

Last edited by WOLFN8TR; Sun, Jan-06-2019 at 09:03:21 PM.
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Old Sun, Jan-06-2019, 08:03:06 PM   #30
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Default Re: Electric fan upgrade

Quote:
Originally Posted by M3AZ View Post
There seems to be a lot of focus on increasing CFM. Unless the fan is constantly running and still not providing sufficient cooling, the CFM is enough.

As I noted, the Mishimoto barely comes on in normal driving, and the coolant temp does not go much over 200 even when tracking (this is in Phoenix, AZ). For 99.9% of us, the CFM could be quadruple and it would make no difference (the fan would simply cycle more often and for less time). That said, those who plan to run a 24-hour race in the Gobi Desert may benefit from a bit more CFM.

If you are experiencing cooling problems, the issue may be another component in your cooling system. Increasing CFM with a 15-year old radiator probably won't fix anything.
I agree. I would go as far as to say that a street driven car is fine removing the fan and solely using the aux fan. In fact, that is what I did last year in GA in the summer. No change in operating temps. I did this in my M roadster as well which has bad airflow design honestly (as is common practice with those cars).
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Discussing Electric fan upgrade 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)