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DIY: Do It Yourself
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Old 09-07-2014, 10:15 AM   #1
kgvickers
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DIY: Aux/Mechanical Fan to electric FrankenFan!

Ok, I know this topic has been beaten to death and the last thing needed is yet another DIY thread on this. But recent findings will give the next guys the opportunity to save some money on this mod.

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For anyone wanting to do the swap, IF YOUR AUX-PUSHER IS WORKING PROPERLY (the one in FRONT of the condenser/radiator):

1. Buy a "puller" style shroud from ECS, part number 17117511168 ( http://www.ecstuning.com/BMW-E46-330...HROUD/ES38088/ )

2. Remove the motor/wiring/electronics unit from the pusher using the correct size torx bit. Note that you don't have to remove the blade assembly from the motor. You'll have a small amount of excess wire-harness. Don't cut anything, just cable-tie it safely so that it won't snag on anything.

*Note*: While it's not necessary to remove the fan blade from the motor, some people have reported that these screws can work loose so I do recommend putting locktite on them.

3. Install the pusher fan parts into the new puller fan shroud/mount assembly.

4. Presto, you've got a "puller" now for about $70.

5. Keep the mechanical fan and clutch somewhere in your scrap parts pile. If the FrankenFan ever fails, remove it and re-install only the mechanical fan/clutch, don't bother with the matching shroud. This should provide adequate air-flow through the radiator to keep the engine cool in stop and go traffic as long as you leave the AC off. This will allow use of the car until a replacement electric fan is available.


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You can see a long discussion on this topic here: http://forum.e46fanatics.com/showthread.php?t=1045785

Cheers!
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Last edited by kgvickers; 09-09-2014 at 09:34 AM.
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Old 09-08-2014, 11:24 PM   #2
Maverick325i
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Personally I'd just do the full swap as it has the benefits of slightly more hp a smoother ride less parasitic drag and less strain on the water pump possibly better mpg I hadn't noticed

I bought a puller fan for about $146
And you'll need the fan clutch removal tools I believe about $30 buy these ahead of time because most likely you'll need them and it's cheaper to go ahead and buy it definitely tools to get from eBay because autozone oreilly's etc do not carry these tools.

You can sell your old fans to make up for the price of it all

You'll also need(as far as tools go)

I believe a 13mm 9mm & 8mm socket a 1/4 ratchet and a 20 or 30 torques bit(I apologize that I can't remember)
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Old 09-09-2014, 09:30 AM   #3
kgvickers
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Quote:
Originally Posted by Maverick325i View Post
Personally I'd just do the full swap as it has the benefits of slightly more hp a smoother ride less parasitic drag and less strain on the water pump possibly better mpg I hadn't noticed
I made an edit to my original post to make this more clear. I'm not saying "leave the mechanical fan installed on the car". My point was that the if the frankenfan fails then remove it and re-install only the mechanical fan/clutch without the original stock shroud until a replacement electric fan is available. That won't provide enough air-flow to run the AC in stop and go traffic but it should provide adequate engine cooling to prevent an engine overheat.
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'04 330i, Wifeypoo
'98 328i, Son
'08 Focus, Daughter (ok, no longer in a Bimmer)

'99 528iT - RIP, You will be missed (thanks to a 17 yo driver in a 'burban)
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Old 09-09-2014, 09:34 AM   #4
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Appreciated the info, but you could have added what I was missing in my DIY to keep all of the info for this DIY in one thread to make it easier for everyone else. But congrats on doing the job and enjoy the swap.
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Old 09-09-2014, 09:42 AM   #5
kgvickers
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Quote:
Originally Posted by Solidjake View Post
Appreciated the info, but you could have added what I was missing in my DIY to keep all of the info for this DIY in one thread to make it easier for everyone else. But congrats on doing the job and enjoy the swap.
Understood. Perhaps you could add the info to your original post and then I can ask a mod to remove this thread.

I think the cheaper frankenfan option should be in your original post because that other thread is over 500 posts now - not sure any newbie will have the patience to read through the entire thing.
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All my advice comes with a 10x Golden Money Back Guarantee! If you're not completely satisfied, I'll gladly refund 10 times what you paid me for the advice!

'03 330i ZHP, Mine
'04 330i, Wifeypoo
'98 328i, Son
'08 Focus, Daughter (ok, no longer in a Bimmer)

'99 528iT - RIP, You will be missed (thanks to a 17 yo driver in a 'burban)
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