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Thread: NomadicVar's 745i - Build Thread

  1. #26
    Join Date
    Jul 2010
    Location
    Leland, NC
    Posts
    828
    My Cars
    85 €735i 08 550i/6
    That is a bad ass E23

    Sent from my LGLS755 using Tapatalk

  2. #27
    Join Date
    Jun 2016
    Location
    Minneapolis, MN
    Posts
    57
    My Cars
    '85 Bronzit 745i
    Quote Originally Posted by motohunter4 View Post
    That is a bad ass E23

    Sent from my LGLS755 using Tapatalk
    Hell, I hope so! Only time and a 'completed' build will tell though. I hope we can get more folks excited about e23's by the time it's finished.

  3. #28
    Join Date
    Feb 2011
    Location
    Wichita, KS
    Posts
    57
    My Cars
    1984 bmw 745i
    Quote Originally Posted by Nomadicvar View Post
    Hell, I hope so! Only time and a 'completed' build will tell though. I hope we can get more folks excited about e23's by the time it's finished.
    Lol i want to help as well. Sorry didnt mean to throw my ish into the middle of the thread. Hope all goes well with your build.

    Sent from my SAMSUNG-SM-G935A using Tapatalk

  4. #29
    Join Date
    Jun 2016
    Location
    Minneapolis, MN
    Posts
    57
    My Cars
    '85 Bronzit 745i
    Quote Originally Posted by Younge23turbos View Post
    Lol i want to help as well. Sorry didnt mean to throw my ish into the middle of the thread. Hope all goes well with your build.

    Sent from my SAMSUNG-SM-G935A using Tapatalk
    No worries! While I hope to get some good info in here, especially when it comes to sourcing parts not involved in the build, I hope this can be a good thread for anyone building an e23 to have questions answered.

  5. #30
    Join Date
    Jun 2010
    Location
    TX
    Posts
    4,487
    My Cars
    1983/84/85 745i

    Thumbs up

    I am curious about bore taper and bearing wear. Every 745i engine I have torn down has awful cylinder walls and insane bearing wear from 'techs' setting the AFM way incorrectly.

    Going to reuse OE slugs or going forged?
    I make E23 parts.
    09/1983 745i (stolen spring '13 around Houston, TX Achatgruen on nutria buffalo. 8481080)
    10/1984 745i
    11/1984 745i
    11/1984 735i (10:1-265/6)
    Ford, MB, and GM round out the pack.



  6. #31
    Join Date
    Feb 2011
    Location
    Wichita, KS
    Posts
    57
    My Cars
    1984 bmw 745i
    Quote Originally Posted by Hit Man X View Post
    I am curious about bore taper and bearing wear. Every 745i engine I have torn down has awful cylinder walls and insane bearing wear from 'techs' setting the AFM way incorrectly.

    Going to reuse OE slugs or going forged?
    Have you heard much about the bearings king racing makes?

    Sent from my SAMSUNG-SM-G935A using Tapatalk

  7. #32
    Join Date
    Jun 2016
    Location
    Minneapolis, MN
    Posts
    57
    My Cars
    '85 Bronzit 745i
    Quote Originally Posted by Hit Man X View Post
    I am curious about bore taper and bearing wear. Every 745i engine I have torn down has awful cylinder walls and insane bearing wear from 'techs' setting the AFM way incorrectly.

    Going to reuse OE slugs or going forged?

    Surprisingly, everything looked pretty great! While I'm not exactly sure what "slugs" you're talking about, we're replacing nearly everything with new forged components.

  8. #33
    Join Date
    Jun 2016
    Location
    Minneapolis, MN
    Posts
    57
    My Cars
    '85 Bronzit 745i
    Who here has done a sharknose conversion? I'm curious about what parts are needed other than the nose/kidneys. If this is total sacrilege, stop me now.

  9. #34
    Join Date
    Jun 2010
    Location
    TX
    Posts
    4,487
    My Cars
    1983/84/85 745i

    Thumbs up

    A slug is a slang term for a piston.

    Post up pictures of the cylinder walls and bearings for us if they look so new.
    I make E23 parts.
    09/1983 745i (stolen spring '13 around Houston, TX Achatgruen on nutria buffalo. 8481080)
    10/1984 745i
    11/1984 745i
    11/1984 735i (10:1-265/6)
    Ford, MB, and GM round out the pack.



  10. #35
    Join Date
    Jun 2016
    Location
    Minneapolis, MN
    Posts
    57
    My Cars
    '85 Bronzit 745i
    Quote Originally Posted by Hit Man X View Post
    A slug is a slang term for a piston.

    Post up pictures of the cylinder walls and bearings for us if they look so new.
    Great, not new. Posts #4 and #11 have pictures of both. A new forged piston is currently being designed for this application.

  11. #36
    Join Date
    Jun 2010
    Location
    TX
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    1983/84/85 745i

    Thumbs up

    Hard to tell as they are still covered in oil. One I tore down ran fat for so long the fuel dilution of the oil ate all the way through down to the copper!!! Cylinder walls were glass smooth.

    Ross already has the M30 design available. Who is making your pistons?
    I make E23 parts.
    09/1983 745i (stolen spring '13 around Houston, TX Achatgruen on nutria buffalo. 8481080)
    10/1984 745i
    11/1984 745i
    11/1984 735i (10:1-265/6)
    Ford, MB, and GM round out the pack.



  12. #37
    Join Date
    Jun 2016
    Location
    Minneapolis, MN
    Posts
    57
    My Cars
    '85 Bronzit 745i
    Quote Originally Posted by Hit Man X View Post
    Hard to tell as they are still covered in oil. One I tore down ran fat for so long the fuel dilution of the oil ate all the way through down to the copper!!! Cylinder walls were glass smooth.

    Ross already has the M30 design available. Who is making your pistons?
    Yeah, the pictures I have are what have been sent to me unfortunately. Pistons will be some coated beauties from Venolia.

    I can't imagine opening up an engine to find that much wear.

  13. #38
    Join Date
    Jun 2010
    Location
    TX
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    1983/84/85 745i

    Thumbs up

    Kickass, they make awesome ones. Are they going to be copies of the M106 style? The turbo engines also came with chrome rings.

    Now I understand the pics...teardown is out of town.
    I make E23 parts.
    09/1983 745i (stolen spring '13 around Houston, TX Achatgruen on nutria buffalo. 8481080)
    10/1984 745i
    11/1984 745i
    11/1984 735i (10:1-265/6)
    Ford, MB, and GM round out the pack.



  14. #39
    Join Date
    Feb 2011
    Location
    Wichita, KS
    Posts
    57
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    1984 bmw 745i
    Quote Originally Posted by Nomadicvar View Post
    Yeah, the pictures I have are what have been sent to me unfortunately. Pistons will be some coated beauties from Venolia.

    I can't imagine opening up an engine to find that much wear.
    Hate to ask this question, what did those run you? Also are you switching to h-beam rods too?

    Sent from my SAMSUNG-SM-G935A using Tapatalk

  15. #40
    Join Date
    Jun 2016
    Location
    Minneapolis, MN
    Posts
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    '85 Bronzit 745i
    Quote Originally Posted by Hit Man X View Post
    Kickass, they make awesome ones. Are they going to be copies of the M106 style? The turbo engines also came with chrome rings.

    Now I understand the pics...teardown is out of town.
    Tear down is in Florida, I'm in Minnesota. The distance is unfortunate, but I'll be flying down for the final few days of building and driving it home. We aren't totally decided on style yet but I'm sure it'll be similar to M106 with a mid-range compression.


    Quote Originally Posted by Younge23turbos View Post
    Hate to ask this question, what did those run you? Also are you switching to h-beam rods too?

    Sent from my SAMSUNG-SM-G935A using Tapatalk
    We still have to settle on which style we want but they seem to run about $2-300 each. We're going to polish and balance the factory rods for this build, thinking they should be safe up to about 800hp.

  16. #41
    Join Date
    May 2013
    Location
    Killingworth, CT
    Posts
    562
    My Cars
    '84 733i, 01 X5 00 750iL
    Man, you trust this shop a lot more than I do. The numbers they are throwing at you don't seem to be based in reality. The Scandinavian builds that see 500 & 600+ hp are sometimes running 30+ psi boost. Where did they come up w/ the rating of 800 hp for stock rods? I am not an expert on M30 turbo builds, quite the opposite. But I don't believe people w/o doing research and gathering evidence based on similar builds and reported dyno results and longevity.
    Last edited by BONDOSPECIAL; 10-19-2018 at 12:37 PM.
    Steve H.

  17. #42
    Join Date
    Jun 2016
    Location
    Minneapolis, MN
    Posts
    57
    My Cars
    '85 Bronzit 745i
    Quote Originally Posted by BONDOSPECIAL View Post
    Man, you trust this shop a lot more than I do. The numbers they are throwing at you don't seem to be based in reality. The Scandinavian builds that see 500+ hp are running 30+ psi boost
    I honestly don't care as long as I see 400whp. In reality, I have no idea what the engine will be capable of with the given modifications, but I'm going to be stoked regardless.

    However, I would appreciate this thread staying generally positive and aiming towards seeing the 600whp come to fruition, be that suggesting proven components, specific tuning recommendations, help sourcing needed parts, etc. I don't want this to turn into a thread that flames a seemingly reputable shop for giving a number that may be difficult to reach. A lot of the current car community seems to be geared towards disrespecting each others builds rather than helping to build each other up, and I find that disturbing (with the exception of hating on "stance").

    What we're aiming for is a unique take on my absolute favorite BMW. I love this chassis and am here trying to connect with like-minded individuals who have experience with it.

  18. #43
    Join Date
    Jun 2010
    Location
    TX
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    1983/84/85 745i

    Thumbs up

    Smart move on OE rods, they can take some abuse. I would fit them with ARP fasteners while in there. BTW ARP main studs from the E30 M10 fit the M106 if you care. You will have to line hone the mains if you want to do that.

    I would consider H beams from Pauter or someone similar, but unless you are going to spin some big RPM I do not see the point.

    Quite excited to see the Venoilas for this. What forging did you choose?
    I make E23 parts.
    09/1983 745i (stolen spring '13 around Houston, TX Achatgruen on nutria buffalo. 8481080)
    10/1984 745i
    11/1984 745i
    11/1984 735i (10:1-265/6)
    Ford, MB, and GM round out the pack.



  19. #44
    Join Date
    Jun 2016
    Location
    Minneapolis, MN
    Posts
    57
    My Cars
    '85 Bronzit 745i
    Quote Originally Posted by Hit Man X View Post
    Smart move on OE rods, they can take some abuse. I would fit them with ARP fasteners while in there. BTW ARP main studs from the E30 M10 fit the M106 if you care. You will have to line hone the mains if you want to do that.

    I would consider H beams from Pauter or someone similar, but unless you are going to spin some big RPM I do not see the point.

    Quite excited to see the Venoilas for this. What forging did you choose?
    ARP goodies will grace nearly everything they can for this build, and if memory serves, we'll be using the "Hardtuf" coated 2618's since 4032's are far less forgiving when dealing with boost.

  20. #45
    Join Date
    Jun 2010
    Location
    TX
    Posts
    4,487
    My Cars
    1983/84/85 745i
    Sweet Should be fun!
    I make E23 parts.
    09/1983 745i (stolen spring '13 around Houston, TX Achatgruen on nutria buffalo. 8481080)
    10/1984 745i
    11/1984 745i
    11/1984 735i (10:1-265/6)
    Ford, MB, and GM round out the pack.



  21. #46
    Join Date
    May 2014
    Location
    California
    Posts
    122
    My Cars
    84 733, 90 535i
    Nice, hopefully it turns out all good when you get it back from Florida.

    Good reads and info post in here

  22. #47
    Join Date
    Aug 2011
    Location
    Metairie, LA, USA
    Posts
    406
    My Cars
    1985 BMW 745i, & 635CSI
    Just looking to see how this is coming. You pick it up yet?


    Sent from my iPad using Tapatalk Pro

  23. #48
    Join Date
    Jun 2016
    Location
    Minneapolis, MN
    Posts
    57
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    '85 Bronzit 745i
    Quote Originally Posted by espoe View Post
    Just looking to see how this is coming. You pick it up yet?


    Sent from my iPad using Tapatalk Pro
    Unfortunately, I haven't. Something about buying a new shop and needing to move everything over has caused some big delays. I'm just trying to be patient as we continue to roll well beyond any and all deadlines that were discussed.

  24. #49
    Join Date
    Aug 2011
    Location
    Metairie, LA, USA
    Posts
    406
    My Cars
    1985 BMW 745i, & 635CSI
    Quote Originally Posted by Nomadicvar View Post
    Unfortunately, I haven't. Something about buying a new shop and needing to move everything over has caused some big delays. I'm just trying to be patient as we continue to roll well beyond any and all deadlines that were discussed.
    Let’s see, I bought my donor car in 2011 as a project. I just got the rear seats out last month. Can’t relate to what you’re saying.

    When you knock that stuff out we look forward to seeing the results!


    Sent from my iPad using Tapatalk Pro

  25. #50
    Join Date
    May 2019
    Location
    Sweden
    Posts
    63
    My Cars
    1986 M535 turbo
    Hi .. how is the build going ? Interesting. How far have you come ?
    Have a couple of questions.
    When you talk about hp is on crank or wheels ?
    The rods can stand a lot of hp without problems 600hp on crank IF you dont put the rev limiter to high. To be safe max 6500 on original. That is on the SAFE side. Just because someone made more .. well well.
    The amount of psi lets say 20 psi and a certain amount of power does not always mean the same power on different turbos. Big turbo 20 psi and 20psi on small turbo .. Difference.

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