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Thread: Z3 v12 twin turbo

  1. #1
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    Z3 V12TT

    Z3 v12 twin turbo

    M70 V12(5 liter) into Z3. Boosted.
    This thing weighs 1300kg, all unnecessary equipment deleted.




    Last edited by geyzer20; 01-23-2012 at 04:19 AM. Reason: Automerged Doublepost

  2. #2
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    Very Nice!
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  3. #3
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    that is a lot in one engine bay

  4. #4
    Terry F.'s Avatar
    Terry F. is offline ONLY BMW Content is + Moderator
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    Yikes. Must be fun. It's no S2K though.

    Stuff. I got stuff.

  5. #5
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    Will definitely post videos as soon as Im back in the country.. The real fun starts at 130k's up.. tires brake loose at almost any speeds as soon as the boost builds up. The sound is amazing especially when under boost the exhaust is dual 3 inch from turbo to the back. twin t3/t4s.
    Last edited by geyzer20; 01-20-2012 at 06:29 PM.

  6. #6
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    Searching..
    Wow that is a lot of engine in a Z3 haha. Impressive
    1992 Racing Dynamics 325i SOLD
    1995 Mugello Rot M3 SOLD
    1973 2002 SOLD
    1999 Estoril Blue M3 SOLD

    2008 550i M Sport Current

  7. #7
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    good god... yeah, we really REALLY need more pictures

  8. #8
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    '99 Coupe
    How much boost????

    Stock M70 = @ 300 hp/torque so with boost I guess whp could be anywhere north of that. Inquiring minds want to know.

  9. #9
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    Boost = 1bar. Starts to boost at 2800rpm... In the range of 400whp with no intercooler for now, water injection still does its job. With intercooler, much more efficient, planning to dyno @1.4bar looking at 550hp/wheels. Torque is massive.. accelerates from any rpm range with much kick..

    Ceramic coated inside out branches and turbine housings... to reduce underhood temps. Works fantastic! Does not require turbo blankets.
    Last edited by shogun; 04-20-2020 at 08:27 AM. Reason: non working pics removed

  10. #10
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    Wow, that is a stupid amount of engine for a Z... I love it!
    Congrats! I'm sure it was a pita to fit that in there.

  11. #11
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    OMG Plaese post a video man Thanks

  12. #12
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    Who did the tuning of the DME,s?

  13. #13
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    Will post videos as soon as Im back in the country..

    What is DME's?

    Most of things I did myself as a hobby with a help of my friend who owns an exhaust shop.
    Last edited by geyzer20; 01-21-2012 at 09:41 AM. Reason: Automerged Doublepost

  14. #14
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    what is necessary and what is considered fun do not go hand in hand
    Hell none of us really need more than a geo metro...

  15. #15
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    Any way you have these pictures and can email them or message them to me?
    Last edited by shogun; 04-20-2020 at 08:47 AM.
    "If the Corvette is a rebellious child of the extended automotive family, the M coupe is the blackest of sheep." - via Car & Driver

  16. #16
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    Amazing! What a relief to see the double eared diff w/subframe reinforcement.

  17. #17
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    E92 and E36(vert) M3 ;)
    Jesus... Probably has enough torque to jumpstart a dead planet....
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  18. #18
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    Great build!

  19. #19
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    2 Boosted,1 more left to
    This is insane!!!!!!! I love the muffler setup also. Is that 2 resonators with tips?

    Thanks

    E39 LSX SWAP PARTS FORSALE


  20. #20
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    Wow! That thing must be a burnout machine!

    Could you please provide better pictures of the turbo placement and piping??

    Also, how did you tune this???

  21. #21
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    Z3 V12TT
    Dont really have better pics at the moment.. Im on a business trip now and cant take better pics the car is parked.

    The space is very tight, I cannot sometimes squeeze even a screwdriver into some areas..
    Initially thought I would need to remove turbos to change 1st and 2nd plugs..but after some manipulation of a universal joint came out quite easy. Actually quite happy with arrangement.

    Im running two EMS's of a local brand called Gotech PRO... each computer controls its own bank of cylinders.

    The burnout is nothing for it Eats tyres for breakfast.. 275/45 at the back.
    This is very raw still, the plans are big.

    BTW still running stock injectors with higher fuel pressure at 3,5bar. But maxing out heavily. Will upgrade with some 550s or so.. The atomization and spray pattern on the old ones makes it less efficient. Plans to take it to ~700hp at the crank.
    Last edited by geyzer20; 01-21-2012 at 07:25 PM.

  22. #22
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    This is amazing !!!
    What is the total cost of this and what gearbox you running?

  23. #23
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    Quote Originally Posted by geyzer20 View Post
    Dont really have better pics at the moment.. Im on a business trip now and cant take better pics the car is parked.

    The space is very tight, I cannot sometimes squeeze even a screwdriver into some areas..
    Initially thought I would need to remove turbos to change 1st and 2nd plugs..but after some manipulation of a universal joint came out quite easy. Actually quite happy with arrangement.

    Im running two EMS's of a local brand called Gotech PRO... each computer controls its own bank of cylinders.

    The burnout is nothing for it Eats tyres for breakfast.. 275/45 at the back.
    This is very raw still, the plans are big.

    BTW still running stock injectors with higher fuel pressure at 3,5bar. But maxing out heavily. Will upgrade with some 550s or so.. The atomization and spray pattern on the old ones makes it less efficient. Plans to take it to ~700hp at the crank.
    Do these computers communicate VIA the stock EML? or did you do something custom for that too?
    Current:

    - 09 335i MSport, FBO.
    - 98 Euro M3, Estoril Blue
    - 04 M3, Carbon Black, 6 Speed Coupe
    - 06 M5, Black on Black, Full Leather.
    - 73 3.0CS, Tagia Green, 5 speed M30b35 converted

    Ex's: 1984 325e, 1988 325IX, 1992 525I, 1995 540i/6, 2002 330i, 2005 330xi, 1992 850i, 2003 330i #1, 2003 330i #2, 2002 330ci, 2004 330ci, 2007 328CI, 2007 335i, 2001 M3, 2006 M5 6 speed

  24. #24
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    Z3 V12TT
    These are complete standalone, they control injectors and ignition via the pressure sensor.. there is nothing stock left. The original throttle bodies were also changed to 65mm ones comparing to ~50mm stock.
    The cost in the range of 15k$ up?
    Gearbox for now is stock ZF auto.
    Last edited by geyzer20; 01-22-2012 at 03:53 AM.

  25. #25
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    Amazing. When you're back ..would love to see some more detailed pics of the mounts and turbo placement as well as overall clearance.

    I know your buddy owns an exhaust shop and helped you out, but you could do with some mandrel bent tubes down there instead of welded angle cuts, especially with the amount of power you're planning on making.

    Also since you asked, going to agree with burninator...no body kit. Your best bet is to keep the body stock and lower it on a nice set of modular wheels. That plus your exhaust setup (and the sound) would do the truck while being nice and modest. You could get a vented hood, but most people here would tell you anything more than that is starting to get ugly.

    Again, amazing build. Looking forward to more pics/videos.

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