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Thread: S85 V10 M Roadster

  1. #1
    Join Date
    Nov 2008
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    Kelowna
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    655
    My Cars
    '99 M Roadster '08 135i

    S85 V10 M Roadster

    First a little background on the car. When I purchased it the only mods I was going to do were tires/wheels and a strut tower brace. Well that didn’t last long (mywife wasn’t surprised either) and I soon found myself looking to make more power and to make it more unique. Soon these came to pass via the car headers, exhaust, intake manifold, BBTB etc., but this still didn’t fulfill what I was looking for. Soon I was on the hunt for somethingdifferent and I found it with a Euro sport twin screw and that worked for several years. Now, after some years on the car I thought about how to make theES/TS different, so I picked up another S52 and did a fully built FI engine andalso found a 2.2L TS (they come with a 1.7L Kenne bell). Well, again I found myself looking for something different and then I re-read 2 builds I had seen awhile ago about installing S85’s in coupes! That was it - I was going to shoehorn one of these beasts in the roady.

    I removed the nice new engine and 6-speed. They came out and I was on the hunt for a V10, and I soon discovered that it made more sense to buy a complete wreck than try to buy all the pieces separately. Since I’m in Western Canada I found zero wrecked M5/6’s and I also tried across the entire country. Now I looked southand I found Copart - that was an experience. I finally found a 2007 M6 that hada Buy It Now and the purchase was made. Since this car was terminal I didn’t feel bad about stripping it. Well, I got the donor home and when a buddy started it up - what a fantastic sound!! As it turns out the previous owner had installed exhaust cutouts, so before the engine came out this had to be driven around the neighborhood - much to the displeasure some of my neighbors! I was nervous about buying a car whose engine I had never heard run, for all I know it could have had a bad engine.

    20161008_155456.jpg20161203_102311.jpgM6 -1.jpgM6 -2.jpgM6 -3.jpg
    Last edited by Z3 M Roadster; 01-16-2018 at 09:55 PM.


  2. #2
    Join Date
    Nov 2008
    Location
    Kelowna
    Posts
    655
    My Cars
    '99 M Roadster '08 135i

  3. #3
    Join Date
    Nov 2008
    Location
    Kelowna
    Posts
    655
    My Cars
    '99 M Roadster '08 135i

  4. #4
    Join Date
    May 2002
    Location
    SW Florida
    Posts
    12,035
    My Cars
    99-01 M Cpe & Rdts, X5M
    Oh my.

  5. #5
    Join Date
    Feb 2013
    Location
    Oakville, Canada
    Posts
    875
    My Cars
    E34+E91+others
    Subbed. This should be good.

  6. #6
    Join Date
    Aug 2014
    Location
    kentucky
    Posts
    650
    My Cars
    '98 Z3 M Roadster
    Nice work! --Only 2 things I can think of you will need is a Randy Forbes subframe kit, and a steel transmission brace to hold that 500HP. https://rallyroad.net/collections/su...nsmissionbrace
    Dinan ISR-3 kit, Dinan Vortech V2 Supercharger, Dinan Air to Air Intercooler, Dinan 10 psi Tune, Dinan CAI, Dinan 4.0 Bar FPR, Dinan HFM, Dinan 3.38 Diff, Dinan front/rear Swaybars, Dinan springs, Koni Yellow Sport Struts, Ground Control end links, South Bend Clutch Stage 3 Organic, AASCO Light Weight Flywheel 18.5#, Zionsville Radiator & Oil Cooler, Riot Racing BBTB, Schrick Intake Manifold, 38# Injectors, Kenne Bell BAP, Bailey Diverter Valve DV30, Strong Strut Aero Ducts, Ireland Rear Subframe Bushings, Mason Engineering Strut Brace, Rally Road Trans brace, Mason Engineering Clutch Petal, Apex 18" EC-7 Wheels, Full Custom Sound System, Hardtop, Trunk full of AK's...

  7. #7
    Join Date
    Aug 2008
    Location
    Sunny SoCal
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    4,894
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    VcLaren
    Having owned a manual M6, I can't imagine the engine in a Z chassis; this is awesome! The S85 is an engineering marvel to behold.

    This thread will need videos when finished

    /
    //

  8. #8
    Join Date
    Jan 2011
    Location
    Kent, Ohio
    Posts
    3,933
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    1998 M Roadster
    My new favorite thread.

  9. #9
    Join Date
    Dec 2006
    Location
    Cleveland, ohio
    Posts
    71
    My Cars
    Dinan Z3, Z4MC, C300
    I'll be watching this one too.

  10. #10
    Join Date
    Jul 2005
    Location
    Temecula Ca.
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    4,217
    My Cars
    86 325es, 99 M Coupe, 92 850i, 06 Trailblazer SS
    This will be very fun to watch.
    Very nice looking so far.
    The sound will be as much fun as the power.
    Dan "PbFut" Rose

  11. #11
    Join Date
    Jun 2011
    Location
    Newport News, VA.
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    214
    My Cars
    01 Z3 Coupe 3.0i, Z4 2.5
    Yaasssss

  12. #12
    Join Date
    Jul 2004
    Location
    Houston, TX
    Posts
    9,415
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    MCoupe, 328is, Z3, TDI
    Hah, most people start the thread with, "I want to do such and such, cool or no?"...
    You already have the donor and engine apart.
    This is going to be good.
    -Abel

    - E36 328is ~210-220whp: Lots of Mods. RomRaider self-tune work in progress.
    - 2000 Z3: Many Mods.
    - 2003 VW Jetta TDI Manual 47-50mpg: Many Mods ~300ft/lbs tq, diesel, daily beater. Love/Hate relationship.
    - S52 Estoril M Coupe
    - 2014 328d Wagon, self-tuned, 240hp/400ft-lbs

  13. #13
    Join Date
    Aug 2012
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    Kansas
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    2000 m roadster 2010 x3
    Looks like the M6's previous missed the curve. Imagine being on that ride. Is this going to be for straight line racing or just something fun to terrorize the streets. ��

  14. #14
    Join Date
    Feb 2006
    Location
    Tim @ BMW of Dallas
    Posts
    1,640
    My Cars
    98 Z3 2.8
    I mean, I've never been a fan of the S85 in an E60/63/64 chassis... But this is pretty awesome. Great work so far!
    98 Z3 2.8 Roadster - GC, Vorshlag, AKG, ARC-8
    99 Z3 2.8 Coupe - TCK, GC, Revshift - Daily
    97 Cosmos M3/4/5 - GT3582R - Broken.
    13 Smart Fortwo - Beater/Bar car.



  15. #15
    Join Date
    Jul 2004
    Location
    Houston, TX
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    9,415
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    MCoupe, 328is, Z3, TDI
    What's scary is that someone actually tried (poorly) to fix that chassis. Typical of Copart cars.
    -Abel

    - E36 328is ~210-220whp: Lots of Mods. RomRaider self-tune work in progress.
    - 2000 Z3: Many Mods.
    - 2003 VW Jetta TDI Manual 47-50mpg: Many Mods ~300ft/lbs tq, diesel, daily beater. Love/Hate relationship.
    - S52 Estoril M Coupe
    - 2014 328d Wagon, self-tuned, 240hp/400ft-lbs

  16. #16
    Join Date
    Jan 2008
    Location
    Arida Zona
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    25,272
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    z3
    Awesome work so far! Can't wait to see it running!

    And my signature is on that car, I dont care what anyone says

  17. #17
    Join Date
    Nov 2008
    Location
    Kelowna
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    '99 M Roadster '08 135i
    Nice work! --Only 2 things I can think of you will need is a Randy Forbes subframe kit, and a steel transmission brace to hold that 500HP.
    Thanks. I think Mr. Forbes subframe kit is in my future unless the M6 diff goes in... I've already made a steel transmission brace.

    Having owned a manual M6, I can't imagine the engine in a Z chassis; this is awesome! The S85 is an engineering marvel to behold.

    This thread will need videos when finished
    As soon as it running videos will be added to be sure!

    This will be very fun to watch.
    Very nice looking so far.
    The sound will be as much fun as the power.
    I just got back from the shop that's building the headers, I may have to start it with the exhaust disconnected...

    Hah, most people start the thread with, "I want to do such and such, cool or no?"...
    You already have the donor and engine apart.
    This is going to be good.
    What can I say, I like be different!


    Looks like the M6's previous missed the curve. Imagine being on that ride. Is this going to be for straight line racing or just something fun to terrorize the streets.
    I does look like it, the passenger door was touching the seat, I'm thinking soiled underwear! This will be for the highways and some street use.


    What's scary is that someone actually tried (poorly) to fix that chassis. Typical of Copart cars.
    I know, they wasted a lot of time and the car is slightly banana shaped.

    Awesome work so far! Can't wait to see it running!

    And my signature is on that car, I don't care what anyone says
    Thanks. well when your famous I'm putting the subframe on EBay... LOL
    Last edited by Z3 M Roadster; 12-24-2017 at 02:46 PM.


  18. #18
    Join Date
    Jul 2007
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    DC
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    Z3M Coupe
    Very interesting; excited to see the packaging. So... what are you doing with that twin screw setup?

  19. #19
    Join Date
    Aug 2003
    Location
    California
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    172
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    2002 M Roadster
    Oh jeez. Subbed to see this epic project come to fruition!


    Sent from my iPhone using Tapatalk

  20. #20
    Join Date
    Dec 2003
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    SJ, CA
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    2,344
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    '00 Z3C, '70 XJ6
    Are you using original BMW or an aftermarket computer to control the motor? Very cool

  21. #21
    Join Date
    Nov 2008
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    Kelowna
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    '99 M Roadster '08 135i
    Very interesting; excited to see the packaging. So... what are you doing with that twin screw setup?
    I sold the twin screw.

    Are you using original BMW or an aftermarket computer to control the motor? Very cool
    I'll be using the original computer.


  22. #22
    Join Date
    Nov 2008
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    Kelowna
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    655
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    '99 M Roadster '08 135i
    Sometime in January all this will become the headers!

    20170428_190441.jpg20170606_211924.jpg20170610_153307.jpg


  23. #23
    Join Date
    Nov 2005
    Location
    Finland
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    988
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    Z3 Coupe individual
    God among mere mortals! Thanks for sharing this and good luck and patience, it will be amazing!
    I would like to read also those earlier S85 coupe threads if anyone is willing to link them.


  24. #24
    Join Date
    Feb 2014
    Location
    Galt,CA
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    734
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    2002 M Coupe
    That looks like a Burns merge collector. They are gorgeous, but with 5 inlets it takes up a lot of vertical space; will it be able to fit under the car?

    Marty

  25. #25
    Join Date
    Nov 2008
    Location
    Kelowna
    Posts
    655
    My Cars
    '99 M Roadster '08 135i
    God among mere mortals! Thanks for sharing this and good luck and patience, it will be amazing!
    I would like to read also those earlier S85 coupe threads if anyone is willing to link them.
    Here is one of them http://f30.bimmerpost.com/forums/sho....php?t=1157425

    That looks like a Burns merge collector. They are gorgeous, but with 5 inlets it takes up a lot of vertical space; will it be able to fit under the car?

    Marty
    It does look like a Burns merge collector but these came from Columbia river mandrel bending, they have better pricing and they are a little closer to me. We've already done some test fitting and there is enough room but it is tight. The steering shaft is the biggest issue especially at #10 exhaust port.


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