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Thread: FMZIP's Fat Daddio Electric Fan DIY

  1. #1
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    FMZIP's Fat Daddio Electric Fan DIY

    I took the best information from all the threads and began tackling the fan clutch removal and installation of an electric fan in my 530.

    I would like to thank particularly forum members 16Valex for his write up & johnstern .
    JimLev's endless contributions and the way he mounted his electric fan lead to the discovery of the Fat Daddio, the key to a super easy electric fan install!

    So here are the key components needed for this DIY

    Fat Daddio Aluminum Cake Pan 18" x 2 " $23.99 from Amazon. This shroud opening is exactly 18 inches, this pan fits the shroud absolutely perfectly!
    http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1

    Summit Racing Fan PN SUM-G4904 $86.97- I followed 16Valex's recommendation on this because it's a curved fan which lowers the noise level.
    http://www.summitracing.com/parts/sum-g4904

    Derale 16749 Fan Control 16749 $46.97- Kudo again to 16Valex. This controller is ideal for its adjustable temperature setting.
    http://www.summitracing.com/parts/der-16749

    Autometer 2283 Radiator Hose Adapter $46.97 - This is the adapter of choice as everyone seems to use it. It offers the ability to maintain the factory lower hose which is ideal. Seems a bit cheaply made to me but it should serve the purpose find.
    http://www.summitracing.com/parts/atm-2283

    BMW Fan Shroud- I already have a new one in my car but decided to buy another to play with. It's not necessary but depending how old yours is and how fragile it is, you may want to replace it for $50
    http://www.eeuroparts.com/Parts/2975...d-17101438457/

    Here's 16 Valex's photos of where to cut the lower radiator hose to install the ATM-2283. Make sure you use teflon tape on threads or a loctite product specific to this application. I used Loctite 565






    After receiving the Fat Daddio cake pan, I checked for fitment, absolutely perfect. This pan is solid as well, nice and thick and lightweight!



    Next I traced a circle just larger than the pan. It should be 15 3/8 round if you desire to draw a perfect circle.



    Next either cut the lip off the pan first or the center. I used a jig saw for both. Cut slowly with a fine tooth metal blade It's a bit awkward to cut the lip off and hold the pan at the same time so be careful
    If I were to do it over again, I'd cut the lip first and the center second. Here's a pic of the center cut out. Remove the lip off the pan next



    Next, I cut just the plastic top vent holes from the shroud just because I wanted a cleaner look with the aluminum being consistent all around. It's not really necessary
    Test fit into shroud looks perfect, stainless steel 1/4 20 hardware and loctite used on the nuts.




    You will need to grind off a bit of the plastic off the fan in order for it fit in the pan. Here is a photo showing a test fit before I cut the lip of the Fat Daddio



    I used this connector from NAPA for a quick disconnect in case I ever needed to remove the shroud



    Here's the finished product. Make sure your fan blade orientation looks like the picture below, if not take off clip and turn the blade over. Black wire is negative, blue wire is power. Remember, the air blows towards the engine



    Make sure you don't mount the fan too far back. You don't want it resting against the radiator. Check side view for clearance



    If you want another 1/4 inch of added clearance, remove the fan blade, then remove the three torx screws. As you can see, there are three spare hole.Rotate the fan
    and reinstall screws into the other three holes. Pic below courtesy of 16Valex



    You can simply follow the Derale's instructions to wire this into the car. Thanks to 16Valex for the electrical hookup suggestions:
    http://www.bimmerfest.com/forums/sho...36&postcount=7
    For 12V constant, I will likely go straight to the positive post on top of the engine for safety

    You will need to unlock the ODB in your BMW to set the temp. I plan to follow 16Valex's advice and set it to come on at 95C.
    I used this video and you are accessing feature number 7. If you can't access #7, access #19 first first. Watch both video's it's self explanatory
    https://www.youtube.com/watch?v=UlIi89xN_IE

    If your instrument cluster has two reset buttons, the procedure is similar
    https://www.youtube.com/watch?v=cO_tBe58ew8

    If you'd like more features, read on.....

    If you'd like to have the fan run at approximately 20% at all times you will need the following items. Otherwise the fan will only kick on when it hits the specified temp you dictate

    www.digikey.com
    Thanks johnstern for the PN's * below
    1 relay 255-1828-ND *
    2 resistors 10ohm 50watt KAL50FB10R0-ND * these resistors will get hot and need to be heatsinked to metal.
    1 thermal grease part for underneath above resitors 345-1006-ND *
    1 1Amp switch of your choice

    Using JimLev's schematic below, you can tie in all the above parts with the Derale controller. Note Jim's schematic shows one resistor but there are two tied in parallel. See john stern's photo below.

    The switch in the schematic will let you bypass this feature in winter months etc.The setup below was my first attempt at mounting parts, not acceptable. Disregard the second switch in the photo that is for the next feature....




    JimLev also came up with the idea to let the fan fun for an additional 2 minutes after killing the ignition to allow engine/plastic parts to cool. I loved this idea as it should
    help prolong the life of all the plastic parts under our hoods!

    An electrical engineer friend of mine discovered a perfect Time delay relay and came up with the ciruitry to tie it into JimLev's above schematic. Here it is:

    1 Time delay Relay TDR-PMF
    http://www.wolstentech.com/products/...delayrelay.php
    2 Diodes 2 1N5400-ND Digikey
    1 1 Amp Switch

    Here's the schematic:




    That's all for now. It takes a week to get the Wolsten Relay and I am waiting for a nice anodized box to mount all the electronics. I may install everything but the added electronics this weekend if I have some time.
    Last edited by fmzip; 11-08-2015 at 10:57 AM.

  2. #2
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    Nice! Are you going to paint the aluminum cake pan shroud? I would think if it was flat black with black hardware, it would look close to factory.

    -Paul
    2003 "M5" - Full M5 conversion, AMG C63S 6 piston front calipers, Porsche Panamera 4 piston rear calipers, GC Coilovers,
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  3. #3
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    That mount is genious. New standard may have set here. Nice work.

    A cake pan... awesome

  4. #4
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    Awesome thread! Leave it to Jim to come up with an ingenious way to do things.

  5. #5
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    Very nice and professional look. The reason I was successful in my conversions is because of JimLev and many others here to contribute.
    2010 BMW M6 SMG Coupe * Black Saphire Metallic * Full Leather Merino Black
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  6. #6
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    Very clean job with that cake pan!
    2003 DINAN 5 | M54B30 | Titanium Gray Metallic | Stage 3 Engine Software | High Flow Throttle Body | Cold Air Intake | Free Flow Exhaust | Performance Automatic Transmission Software | Front Strut Brace | OE 18x9 BBS RS745 Style 42 on 265/35-18 MY BUILD THREAD: [Click]


  7. #7
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    It was a piece of cake.... Lol

  8. #8
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    Quote Originally Posted by blackknight530i View Post
    Nice! Are you going to paint the aluminum cake pan shroud? I would think if it was flat black with black hardware, it would look close to factory.
    No, I like the aluminum contrast. Spray paint never cuts it for me.

  9. #9
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    wow, that is simply ingenious... MASTA-BAKER!! lol, This will also be on my list to do!

  10. #10
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    So legit. I've been doing all your mods. lol. This is next on the list!

  11. #11
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    Regarding the radiator hose adapter:

    Does anyone know if it will also work for the V8 cooling hoses? I believe they are the same size as the I6, correct?

    Do you know what is the size thread opening of the female brass adapter on top of the radiator hose adapter?

    Any details on how you placed that wire in there? What is that black stuff?

    Thank.

  12. #12
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    Quote Originally Posted by GreenTiger View Post
    Regarding the radiator hose adapter:

    Does anyone know if it will also work for the V8 cooling hoses? I believe they are the same size as the I6, correct?

    Do you know what is the size thread opening of the female brass adapter on top of the radiator hose adapter?

    Any details on how you placed that wire in there? What is that black stuff?

    Thank.
    This guy used the 2283 on his 540 and 528. I almost went with the Spal fan he mentioned but the current draw concerns me:

    http://forums.bimmerforums.com/forum...on-97-BMW-528i

    The thread size is 3/8. The black wires are attached to the one piece brass sensor from the Derale 16749 kit. This sensor is then threaded into the Autometer 2283 aluminum piece. The 3/8 brass piece as pictured below that comes the 2283 is not used.



    - - - Updated - - -

    Quote Originally Posted by carlova789 View Post
    So legit. I've been doing all your mods. lol. This is next on the list!
    It's my duty to keep you young-guns busy modding

    - - - Updated - - -

    Quote Originally Posted by bighman209 View Post
    wow, that is simply ingenious... MASTA-BAKER!! lol, This will also be on my list to do!
    LOL....masta-baker!

    Just call me Chef-zip

    - - - Updated - - -

    Quote Originally Posted by philly98540 View Post
    That mount is genious. New standard may have set here. Nice work.

    A cake pan... awesome
    Thank you for the kind words.

    I was pretty stoked with it myself. I couldn't have found a more perfect aluminum piece to work with.
    Last edited by fmzip; 07-11-2014 at 01:02 AM.

  13. #13
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    That cake pan looks quite sharp. I have a 14" fan from my s4, I may try to adapt it
    Current
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  14. #14
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  15. #15
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    Gonna start to buy these parts soon. Even if they don't go on my current car I can hold on to them.
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  17. #17
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    Quote Originally Posted by MarlberCruz View Post
    Gonna start to buy these parts soon. Even if they don't go on my current car I can hold on to them.
    Better get your fat daddio before there's a shortage in supply!

  18. #18
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    ^Ha! No Kidding!
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  19. #19
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    Well, I just bought a $33 cake pan just in case I ever want to do this, LOL!!
    2003 DINAN 5 | M54B30 | Titanium Gray Metallic | Stage 3 Engine Software | High Flow Throttle Body | Cold Air Intake | Free Flow Exhaust | Performance Automatic Transmission Software | Front Strut Brace | OE 18x9 BBS RS745 Style 42 on 265/35-18 MY BUILD THREAD: [Click]


  20. #20
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    Cake pan global shortage!

  21. #21
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    Quote Originally Posted by Aryana View Post
    Well, I just bought a $33 cake pan just in case I ever want to do this, LOL!!
    It's a bimmerforum bake sale.

    Let's get baked!

    - - - Updated - - -

    Got a few goodies in the mail today.

    New aluminum housing from Amazon to mount all the electronics on/in:

    http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1

    , snagged up a few black anodized heatsinks for the resistors from work today.

    And the Wolsten time delay relay showed up, super fast delivery

    Last edited by fmzip; 11-08-2015 at 10:58 AM.

  22. #22
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    Looking forward to seeing it all in your engine bay.
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  23. #23
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    Got my parts installed on the new box.

    Planning to do the install tomorrow

    Last edited by fmzip; 11-08-2015 at 10:59 AM.

  24. #24
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    Tidy work as always.

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  25. #25
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    It was a piece of cake.... Lol
    Good to hear! Nice work BTW!

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