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Old 06-03-2013, 04:30 PM   #1
COBYATCH
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Mechanical fan replacement options (Electrical fan swap?)

Hey guys,

I recently had the mechanical fan connected to the engine explode on me, and in return it put a hole into my radiator. I'm considering my options for replacing it, and it looks like there are 2 options. I can replace it with another mechanical fan, or buy the new electrical fan and at the same time remove the aux fan in the front. Is there any benefit to doing this? What option should I go with? I know for sure I have to replace the radiator, but I haven't looked to closely at what else needs to be fixed. I'll keep you all updated on what else needs to be replaced.

-Coby
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Old 06-03-2013, 04:32 PM   #2
WDE46
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Benefits = fan won't blow up again
engine idle smoother and revs quicker
EASY removal for future work.

cons = costs a little more

I did it and I would never go back. The peace of mind I have when the engine gets revved near redline is nice.

BTW, bought the Bosch fan from BMAParts.com. Bosch was obviously the OEM b/c there are multiple BMW logos that have been ground off the part I received.
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Old 06-03-2013, 04:54 PM   #3
Big Rick
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It costs a little more but here are a few benefits...

If you need to remove the fan later to work on the engine it comes out VERY easily. (In seconds!)

It is quieter

You'll add another 2MPG to your gas mileage!
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Old 06-03-2013, 04:56 PM   #4
COBYATCH
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Re: Mechanical fan replacement options (Electrical fan swap?)

Quote:
Originally Posted by WDE46 View Post
Benefits = fan won't blow up again
engine idle smoother and revs quicker

cons = costs a little more

I did it and I would never go back. The peace of mind I have when the engine gets revved near redline is nice.

BTW, bought the Bosch fan from BMAParts.com. Bosch was obviously the OEM b/c there are multiple BMW logos that have been ground off the part I received.
Oh for sure, thanks! Definitely sounds like I'll be doing the swap.

I just looked at the car right now and it appears I just need that fan and radiator. The foam cover on the hood did get chewed up a bit so I'll probably replace that as well. Other than that, looks like a pretty easy job.

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Old 06-03-2013, 05:02 PM   #5
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Click on the electric fan swap in my sig. Do it
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Old 06-03-2013, 05:05 PM   #6
WDE46
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I did not record any sort of MPG improvement, but maybe that's just been my driving lately. Also, I added the easy removal point to my post. Forgot about that one. It takes about 30 seconds now :-D
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Old 06-03-2013, 05:07 PM   #7
cvx5832
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Quote:
Originally Posted by COBYATCH View Post
Hey guys,

I recently had the mechanical fan connected to the engine explode on me, and in return it put a hole into my radiator. I'm considering my options for replacing it, and it looks like there are 2 options. I can replace it with another mechanical fan, or buy the new electrical fan and at the same time remove the aux fan in the front. Is there any benefit to doing this? What option should I go with? I know for sure I have to replace the radiator, but I haven't looked to closely at what else needs to be fixed. I'll keep you all updated on what else needs to be replaced.

-Coby
How many miles on the clutch/fan that blew apart?
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Old 06-03-2013, 05:28 PM   #8
NumbaOneNewb
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Re: Mechanical fan replacement options (Electrical fan swap?)

Dont bother replacing foam part to hood. Its expensive and not worth it. I did electric fan swap too. You should free up a tiny amount of hp and weight reduction.

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Old 06-03-2013, 06:05 PM   #9
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Sorry to hear your mishap. I had a cooling issue the other day too where my bleeder screw gave out and popped.
I'll probably be doing the electric aux fan soon for more peace of mind.
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Old 06-03-2013, 06:46 PM   #10
COBYATCH
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Quote:
Originally Posted by Solidjake View Post
Click on the electric fan swap in my sig. Do it
Thanks! Definitely gonna follow it when I do the swap.

Quote:
Originally Posted by cvx5832 View Post
How many miles on the clutch/fan that blew apart?
Not sure. If the previous owner has never replaced it before, then around 129K miles.

Quote:
Originally Posted by WDE46 View Post
I did not record any sort of MPG improvement, but maybe that's just been my driving lately. Also, I added the easy removal point to my post. Forgot about that one. It takes about 30 seconds now :-D
Sounds good! Not sure when I would need to take it out, but at least it helps when that time comes.

Quote:
Originally Posted by NumbaOneNewb View Post
Dont bother replacing foam part to hood. Its expensive and not worth it. I did electric fan swap too. You should free up a tiny amount of hp and weight reduction.

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Quote:
Originally Posted by Press22 View Post
Sorry to hear your mishap. I had a cooling issue the other day too where my bleeder screw gave out and popped.
I'll probably be doing the electric aux fan soon for more peace of mind.
Sorry to hear about that man. Sucks for me too because I just replaced the radiator (and other stuff) in December. I'll keep everyone updated on the swap so you know how easy/difficult it is to do.
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Old 06-03-2013, 07:14 PM   #11
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I had a mechanical fan installed on my 2000 323i only because my original electrical fan quit while I was moving cross country from California to Florida, this was only done because the Dealer in Baton Rouge did not have an electric one in stock and I needed to get back on the road. I ran the fan for two years only because it took me that long to find a reasonably priced replacement. The drawbacks with a mechanical fan are less hp because the engine has to drive the additional load, louder fan noise coming from a mechanically driven fan, and also the A/C will not work adequately at low speeds or when stopped in traffic. Go with an electric fan by all means, also not having an electric fan on a car that came with one also messed up the engine computer, was told by the dealer that my engine warning light would most likely come on by not having the electric fan hooked up.
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Old 06-03-2013, 07:16 PM   #12
Solidjake
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Quote:
Originally Posted by Joan Lynn View Post
I had a mechanical fan installed on my 2000 323i only because my original electrical fan quit while I was moving cross country from California to Florida, this was only done because the Dealer in Baton Rouge did not have an electric one in stock and I needed to get back on the road. I ran the fan for two years only because it took me that long to find a reasonably priced replacement. The drawbacks with a mechanical fan are less hp because the engine has to drive the additional load, louder fan noise coming from a mechanically driven fan, and also the A/C will not work adequately at low speeds or when stopped in traffic. Go with an electric fan by all means, also not having an electric fan on a car that came with one also messed up the engine computer, was told by the dealer that my engine warning light would most likely come on by not having the electric fan hooked up.
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Old 06-03-2013, 07:22 PM   #13
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Sorry to hear that man, my fan did the same thing in March, and I just had my hood redone to take care of the dents put in my hood by the fan. No pierced radiator for me, luckily.

http://forum.e46fanatics.com/showthread.php?t=975731

Definitely worth the swap, I did some work afterward, and it was SO easy!
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Old 06-03-2013, 07:40 PM   #14
SeattleLSB
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get the fan from BMA Parts, Use Code Spece30 and get it for a great price! That is where I got mine!
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Old 06-03-2013, 08:34 PM   #15
COBYATCH
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Can't seem to find the fan on BMAparts. Can someone give me the link for them?
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Old 06-03-2013, 08:46 PM   #16
Solidjake
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BMA doesn't have them.

Prices did go up a bit, cheapest I see so far is on ECS

http://www.ecstuning.com/Search/17117561757/ES2568886/
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Old 06-03-2013, 09:12 PM   #17
WDE46
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Mechanical fan replacement options (Electrical fan swap?)

That's weird because I bought one from there less than a month ago.


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Old 06-03-2013, 10:51 PM   #18
rudycoop
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Try and find one through salvage/second hand.
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