Mounting m3 expansion bottle

Discussion in 'E36 M3 (1991-1999) and E30 M3 (1986-1990)' started by dibbles00, Jun 10, 2019.

  1. 10 Jun 2019 at 9:09 PM #1
    dibbles00

    dibbles00 On the path

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    Hi,
    Does anyone know the best way to mount the m3 expansion bottle to a none m3 chassis (e36)?

    Currently held in place with zip ties around the fuse board, which I know isn't ideal.

    Cheers
     
  2. 11 Jun 2019 at 1:57 AM #2
    Kelvinator

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    The correct mounts can be purchased and then attached with rivnuts to the inner guard.
     
  3. 11 Jun 2019 at 3:47 AM #3
    MParallel

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    Yep, best way is the OEM brackets.
     
  4. 11 Jun 2019 at 5:34 AM #4
    dibbles00

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    Thank you both. Any idea on part numbers required?
    Cheers
     
  5. 11 Jun 2019 at 11:14 AM #5
    Kelvinator

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  6. 11 Jun 2019 at 1:00 PM #6
    MParallel

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    Because you are looking at US spec diagram, and they didn't get our setup.

    But regardless, #19 isn't that part at all. I mean, not even close. That's the diagram for left side of engine bay.


    PN for the firewall bracket is: 41122256492
    #10
    http://bmwfans.info/parts-catalog/E36-Cabrio/Europe/M3_3.2-S50/L-M/1998/browse/bodywork/splash_wall_parts/

    There is another bracket supporting the fron, located at the shock tower: 41112491298

    #4
    http://bmwfans.info/parts-catalog/E36-Cabrio/Europe/M3_3.2-S50/L-M/1998/browse/bodywork/front_body_bracket_right_2/
     
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  7. 11 Jun 2019 at 1:04 PM #7
    dibbles00

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    Perfect, I've already got bracket #10, so the missing piece of the puzzle is #4. Is that the same part number for right hand drive also? The images shows the opposite flitch side to where mine is mounted?
    Many thanks for the help!!
     
  8. 11 Jun 2019 at 1:22 PM #8
    Kelvinator

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    Wrong, that realoem link is literally from my RHD euro M3. All cars are "handed" by sitting in the drivers seat, so the "left hand" side would be passengers side on a RHD car, which is where the expansion tank is on a RHD car.

    The links you posted, are for a LHD car and don't fit RHD. The expansion tank on a LHD car is on the other side of the engine bay, "right hand" side.

    Do you know how arrogant you come across?
     
  9. 11 Jun 2019 at 1:35 PM #9
    Kelvinator

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    You can see the bracket I'm talking about in this photo. The tank hooks into the raised tab near strut tower, and into a plastic clip on the vertical post at the top of the photo
    [​IMG]


    This is the post for the rear clip
    [​IMG]
     
    Last edited: Jun 11, 2019
  10. 11 Jun 2019 at 1:39 PM #10
    Kelvinator

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    Having trouble with that first photo on my phone, so here it is if it doesn't show above
    [​IMG]
     
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  11. 11 Jun 2019 at 2:00 PM #11
    MParallel

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    Do you know how touchy you come across?

    'm not here to make friends. If you interpreter my words as 'arrogant', then that is your problem. Don't make it mine.

    Everything I said was correct for LHD cars. There was not L/R side specified.
     
  12. 11 Jun 2019 at 5:15 PM #12
    grdaniel

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    Now now girls, play nice!
     
  13. 11 Jun 2019 at 7:49 PM #13
    dibbles00

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    Thanks both of you for your help. I'm going to get that long bracket ordered along with a riv nut kit to mount it correctly.
     
  14. 11 Jun 2019 at 10:29 PM #14
    Kelvinator

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    LHD appears to be the minority on here, so best to presume not everyone is left hook. The give away was in the first post, "Currently held in place with zip ties around the fuse board", which is on the LH side of the engine bay.

    In regards to the bracket in my post, I wonder if it's greyed out because it's not available separately and only available with the body? Only way to get one may be to cut it off an M3 shell?
     
  15. 12 Jun 2019 at 1:34 AM #15
    Kelvinator

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    There is one piece I believe you will need to fabricate too. Just checked my car, which is a 328i shell, and that number 19 bracket is bolted to a small L shaped bracket which is what is bolted (or screwed) to the strut tower. On M3 shells this is welded on, and i cant see it in any diagrams (but im not 100% sure what the part looks like stock, it could be #12 in the diagram, maybe). I think the previous owner fabricated mine or pinched it from something else. You can see the two screws holding mine to the strut tower. The rear of the number 19 bracket looks to bolt to two existing mounts on the firewall.

    I'd make the L bracket longer, and try to capture both of the holes at the end of the mounting bracket, as since mine only bolts into one, it's a bit flexible.

    [​IMG]
     
    Last edited: Jun 12, 2019
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  16. 12 Jun 2019 at 10:10 AM #16
    dibbles00

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    Thank you for sharing your images, they make it so much clearer in my head.
    I'm actually struggling to find a place to buy that bracket from atm. If anyone has a spare one in their shed/garage/parts bin and wants to sell on please let me know and I'll take it.
    Thanks
     
    Last edited: Jun 12, 2019
  17. 12 Jun 2019 at 12:22 PM #17
    dibbles00

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    So I bought this bracket a few months ago when planning the swap, because I thought it was the only bracket required:

    https://www.ebay.co.uk/itm/Genuine-...192103&hash=item1a5cc815bc:g:ROUAAOSwrR5bhwVM

    In the end I did not install it because it wouldn't hold the bottle on its own. Hence using zip ties and temp mounting ontop of ABS pump.

    The only other bracket I can find is this one:

    https://www.ebay.co.uk/itm/New-Genuine-BMW-3-Z3-Series-E36-Coolant-Tank-Expansion-Holding-Bracket-2491298/283461430392?fits=Plat_Gen:E36&epid=1909538190&hash=item41ff9e2c78:g:m0oAAOSwduxbKjoN

    However, it is different to what you have shown I require and I'm unsure of how it would fit or even if it is the correct bracket - seems strange they would refer to it as "Coolant Tank Expansion Holding Bracket".

    My shell is also a 328 sport...

    Thanks

    Update: BMW have managed to find that bracket listed at part #8 on their ETK system. However, it is listed for LHD cars only?

    Also, how is the back end of the bracket mounted? Does it use a U shaped bracket that sits on the ABS connector or does it use the #10 bracket which is attached to the bulk head/firewall?

    Cheers
     
    Last edited: Jun 12, 2019
  18. 12 Jun 2019 at 3:00 PM #18
    Iain

    Iain Staff Member Moderator

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    The bracket you have bought is for left hand drive as is the one you are proposing.

    the correct one is the one mentioned by Kelvin

    If i get a moment i will take some additional pictures
     
  19. 12 Jun 2019 at 5:40 PM #19
    dibbles00

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    Yes please. Any extra pics of the bracket and how it mounts would be ideal.
    The small bracket I bought was info passed to me by a friend. As I'd not seen one fitted before I bought it... Want to make the right decision this time hence asking on here.
    Thank you!
     
  20. 12 Jun 2019 at 9:12 PM #20
    Iain

    Iain Staff Member Moderator

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    ignore the fact that the bracket looks like its come from a lake and the weird wires and pipes (extinguisher etc)

    you can see the position of the reservoir and the plate on the side of the reservoir that secures the main engine loom

    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
     
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