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Thread: BMW E24 puzzle

  1. #26
    Join Date
    Jul 2018
    Location
    Netherlands
    Posts
    292
    My Cars
    1982 628CSi
    I love the coulour, that will make it stand out from the crowd. I don't know what the main colours are on cars in Croatia but here in The Netherlands the main fare is black, silver and dark blue. This is as most new cars are leased and the leasing companies have decided that these boring colours have the lowest depreciation and therefore making these cars the cheapest to lease.

    So utterly boring.... exactly the opposite from your car!

  2. #27
    Join Date
    Oct 2017
    Location
    Zagreb, Croatia
    Posts
    62
    My Cars
    '78 633CSi, '81 635CSi
    Thanks.

    Yes, the crap colours are present here too. Black, white and silver are the main 3.

  3. #28
    Join Date
    Nov 2018
    Location
    Ljubljana, Slovenia
    Posts
    3
    My Cars
    BMW E24 635CSI
    Quote Originally Posted by LeonardoL View Post
    Can someone help me?
    What injection system did its M30B32 originaly have? K-jetronic or early motronic systems? I have an M30B32 from 1984, how hard would it be to convert to k-jetronic?
    As far as I know, they were using Motronic systems in 1984. Are you planning to put M30B32 into your car?

  4. #29
    Join Date
    Apr 2008
    Location
    Scottsdale, Arizona
    Posts
    4,885
    My Cars
    81 euro 635, 4.4 X5
    Why in the world would you want Kjet???? All E24s post 83 are Motronic. Kjet is stone age
    81 Euro undergoing total nut and bolt restoration
    pictures at: flickr.com/photos/bertsphotos

  5. #30
    Join Date
    Feb 2003
    Location
    North Central Florida
    Posts
    1,282
    My Cars
    88m5,2015 Silverado
    Keep the L jet compared to K jet. Having said that, I promise with the collective wisdom here. We can get it all back together from 8000 miles away. I wouldn't be afraid of the project all. Wish you were closer

  6. #31
    Join Date
    Nov 2007
    Location
    Seattle, WA USA
    Posts
    1,495
    My Cars
    '83 323i, '82 320i, '06 mazda5
    how the hell are you doing all this in a single car garage?! my e21 is in a single car and I have the hardest time even putting it on jack stands sometimes!

    looking fantastic though. i hope to have an E24 one day

  7. #32
    Join Date
    Feb 2005
    Location
    W-S, NC
    Posts
    967
    My Cars
    84 E24, 91 M5, E36's,E46
    Quote Originally Posted by LeonardoL View Post
    Thanks.

    Yes, the crap colours are present here too. Black, white and silver are the main 3.
    Carerful...

    (I have 5... yes, 5 silver ones right now. Sorry, I mean "crap color" ones)
    Last edited by Sprocket; 11-24-2018 at 02:48 PM.

    '84 Euro 635CSi Polaris/Pacific, for sale (maybe)
    Home of the Silver Bimmers: '91 M5, '84 Euro E24, "99 E36, "98 E36, '02 E46 xiT (yes, all silver)

  8. #33
    Join Date
    Oct 2017
    Location
    Zagreb, Croatia
    Posts
    62
    My Cars
    '78 633CSi, '81 635CSi
    Quote Originally Posted by Sprocket View Post
    Carerful...

    (I have 5... yes, 5 silver ones right now. Sorry, I mean "crap color" ones)
    No offense, meant as a joke

    Yes im doing this in my small (now to cold) garage. When warmer weather comes i roll it out in the yard.

    Now i have a few problems (apart from scratches made by me)

    The rear bumper chrome is depressed at left top part
    20181228_215320.jpg

    The oem rear bmw emblem has its middle tilted a few degrees to the right!
    20181228_215332.jpg

    Cannot adjust the trunk, the bolts are on the closest position on both sides and still does the left side portrude quite a bit. Can the mechanism in the trunk be moved too to the back ot its just up and down?
    20181228_215356.jpg
    20181228_215348.jpg

    Also if someone is breaking an 1st series with beige interior, let me know! I need a carpet (1st floor type, 1976-1979) and a few details from the interior. Preff europe.

    - - - Updated - - -

    20181228_215411.jpg

  9. #34
    Join Date
    Oct 2017
    Location
    Zagreb, Croatia
    Posts
    62
    My Cars
    '78 633CSi, '81 635CSi
    If someone is still interested - car is on the road!

    Engine is converted to MS2 based ECU with 714 injectors converted to hoseback and an modified fuel rail with an Audi S8 fuel regulator housing so now we have 3 bars of fuel pressure.
    Bosch red coil with NGK plugs gapped to 0,9mm.
    I think it should have about 210hp (modernish) now.
    15 inch MSW rims with an 205/65r15 tires, stock brakes with Ferodo DS2500 pads

    A few details are missing from the car yes but all will be taken car of soon
    IMG-20211107-WA0008.jpg
    IMG-20211107-WA0004.jpgIMG-20211107-WA0006.jpg
    IMG-20211107-WA0005.jpgIMG-20211107-WA0007.jpg

  10. #35
    Join Date
    Mar 2019
    Location
    Rochester Hills, Michigan
    Posts
    10
    My Cars
    1988 BMW M6
    Wow! What a journey - in a single car garage no less. You are inspirational!

  11. #36
    Join Date
    Oct 2017
    Location
    Zagreb, Croatia
    Posts
    62
    My Cars
    '78 633CSi, '81 635CSi
    Quote Originally Posted by Sbeaud View Post
    Wow! What a journey - in a single car garage no less. You are inspirational!
    Cheers! Took a long time yes, ive had 3 drivers and bought 5 for parts in the meanwhile.

    Here is the S8 fuel pressure regulator housing converted to the L-jet ramp - now the regulators cost 30$ compared to 250 for the original one

    20211026_164932.jpg
    20211024_203636.jpg

    Hoseback conversion for the injectors

    20211023_191131.jpg
    20211023_192352.jpg

    Oldschool 1.4kohms bakelite spark plug caps
    20211101_184807.jpg
    Last edited by LeonardoL; 11-08-2021 at 12:40 PM. Reason: Typo

  12. #37
    Join Date
    Feb 2009
    Location
    Pittsburgh, PA
    Posts
    1,718
    My Cars
    '86 635CSi, '08 128i
    Spectacular progress! The FPR & injector conversions are clever, thanks for posting them.

    I've been following your thread for years, your commitment is admirable. It's inspirational to see the dramatic evolution of your car. Like the caterpillar into the butterfly? Is that even a relevant comparison?
    Save the manuals!
    '08 128i 6MT, '86 635CSi 5MT (B32, Motronic 1.3, WBO2, G265, 18# FW, 3.46 torsen)
    Past projects:
    '96 318iS, sold 4/23 '90 535iM, RIP 1/23 '90 535iA RIP 6/22 '91 318i, sold 7/19 '97 M3 sedan, sold 11/18 '85 735i, RIP 2/18 '92 325iC, sold 7/16 '91 318iS, sold 6/16 '84 745i, sold 10/14 '82 633CSi, traded 9/12 '90 325i, RIP '87 325 sold '89 525i, traded '87 325iS, RIP

  13. #38
    Join Date
    Oct 2017
    Location
    Zagreb, Croatia
    Posts
    62
    My Cars
    '78 633CSi, '81 635CSi
    Quote Originally Posted by DesktopDave View Post
    Spectacular progress! The FPR & injector conversions are clever, thanks for posting them.

    I've been following your thread for years, your commitment is admirable. It's inspirational to see the dramatic evolution of your car. Like the caterpillar into the butterfly? Is that even a relevant comparison?

    Thank you for the very kind words Dave.

    A note economy wise, driven it about 1000kms post tuning. Im getting 17-18mpg(13.5L per 100km)combined but im driving it quite hard at times, that 272 cam pulls hard up to 6500 - just cannot resist it; also so the rev limiter was at 7500 for a while since i used a map for a built engine and i didnt know, it pulled like crazy over 7000

    Combined with mostly open roads (70% open 30% city woth a few hard OT accelerations) i got about 20.5mpg (11.6l/100). All with the O2 sensor off. A few more tweaks and bits and im happy. The economy is a tad better than original and the performance and responsivity is on par with a M50 - minus the smoothness.

  14. #39
    Join Date
    Oct 2017
    Location
    Zagreb, Croatia
    Posts
    62
    My Cars
    '78 633CSi, '81 635CSi
    Hello everyone, hope all is well wherever you are.

    Ive driven the car about 9000km until i lost compression on cylinders 5 and 6 (3 bar each, seems the gasket between them let go) and its getting opened up. Im widening the cylinders on 92mm an putting B35 pistons in it, got them for free. Cannot find B34 pistons anywhere and the compression difference is too small to bother (B34 head B34 pistons 10:1 and B34 head w B35 pistons 9.87:1). Also every cyilinder will be drilled corresponding to the state of the piston so that it has the minimum running gap - 0.03mm.

    Here is a photo of the latest ICV mounting
    PXL_20220706_093519342.jpg

  15. #40
    Join Date
    Oct 2017
    Location
    Zagreb, Croatia
    Posts
    62
    My Cars
    '78 633CSi, '81 635CSi
    I need a hand from you guys

    The engine is out (yup i was too lazy to remove the hood
    PXL_20220718_120433236.jpg

    The plan is to build the engine a non cat B35 (9.2 pistons and b35 head with a bit of head decking - circa 9.3 compression); keeping the L-jetronic (standalone now) manifold.
    It was the most powerful factory M30 with 220hp.



    Here are the 9.2 pistons
    IMG-20220714-WA0008.jpg

    Now my question is - what is the running gap between the cylinder and the piston? Ive read somewhere that its 0.003-0.005mm (0.00118'-0.00196)?; and somewhere that every piston has a different running gap due the cooling effect

    Can someone help?
    Last edited by LeonardoL; 07-21-2022 at 05:12 AM.

  16. #41
    Join Date
    Oct 2017
    Location
    Zagreb, Croatia
    Posts
    62
    My Cars
    '78 633CSi, '81 635CSi
    Last engine update

    I went with the 9.2 pistons paired with an M90 head (10.7 CR).
    Factory 272 cam machined to take the late motronic rotor arm/distributor.
    Crank balanced, now its under 0.3grams of balance weight

    PXL_20220909_164946296.jpg
    PXL_20220916_160729450.jpg

  17. #42
    Join Date
    Dec 2004
    Location
    Baja Sur MX & Healdsburg
    Posts
    80
    My Cars
    Coupes
    Great e24/Series 1 refurbishment journey! The paint looks very nice too & should be a hoot to drive with a fresh M90 rebuild.
    Thanks for posting along the way
    DV
    ////// Motorsports & Vintage Coupes
    ALPINA Oldtimers of Course...
    BMW-Classic CCA

  18. #43
    Join Date
    Oct 2017
    Location
    Zagreb, Croatia
    Posts
    62
    My Cars
    '78 633CSi, '81 635CSi
    Quote Originally Posted by dlvad View Post
    Great e24/Series 1 refurbishment journey! The paint looks very nice too & should be a hoot to drive with a fresh M90 rebuild.
    Thanks for posting along the way
    Thank you Sir!

    So the final specs are

    3.2 block bored to 92mm (B32 with no water between cylinders, rare)
    9.2CR pistons out od the early E24 B35 engine in standard
    M90 head (272 cam) giving the final CR of cca 10,7:1
    Schmiedmann headers
    Megasquirt based standalone

    All in i expect cca 230-235hp from this frankenstein

  19. #44
    Join Date
    Nov 2006
    Location
    Duluth, GA, USA
    Posts
    12
    My Cars
    86 Toyota MR2 Turbo, 88 Mustang 5.0 Notch
    Quote Originally Posted by LeonardoL View Post
    Thank you Sir!

    So the final specs are

    3.2 block bored to 92mm (B32 with no water between cylinders, rare)
    9.2CR pistons out od the early E24 B35 engine in standard
    M90 head (272 cam) giving the final CR of cca 10,7:1
    Schmiedmann headers
    Megasquirt based standalone

    All in i expect cca 230-235hp from this frankenstein

    Very cool--- which MegaSquirt system are you thinking? I'd lean towards MS3Pro for the featureset https://www.diyautotune.com/shop/msp...fi/ms3pro-ecu/ probably, but it really depends on what you're after. Hit our team up if we can help! support@diyautotune.com
    Jerry a.k.a. 'FoundSoul'
    http://www.DIYAutoTune.com

  20. #45
    Join Date
    Jul 2008
    Location
    Miami
    Posts
    5
    My Cars
    1977 633 CSI
    Courageous endeavor and great results. Congratulations. Thanks for sharing.
    Current:
    1977 633 CSI
    Past:
    1988 M3, 1985 M635CSI, 1988 M5 & 1994 325 Cabrio w/Hardtop

  21. #46
    Join Date
    Jun 2012
    Location
    Guildford, UK
    Posts
    147
    My Cars
    Alpina B10 4.6 Touring
    Great thread - you may have got some better technical advice on engine specs from bigcoupe.com but the encouragement on here for you must have helped.

    I have owned E24's for nearly 30 years now - I still have these two...

    DSC01049.JPG

    08082016499.jpg

    The Baltic blue one is a very early Series 2 car that I've owned for over 25 years - a 1982 635CSiA but it has been embellished with the M635CSi front and rear spoilers, wheel arch extensions and steering wheel.

    The alpine white one is a 1985 M635CSi, Taurus red seats and I've had it for 18 years.

  22. #47
    Join Date
    Oct 2017
    Location
    Zagreb, Croatia
    Posts
    62
    My Cars
    '78 633CSi, '81 635CSi
    If someone still follows this thread - here is the car. Ive done a mortal sin and installed french fog lights on the car

    PXL_20230515_145127369.jpg
    PXL_20230515_101159988.jpg
    PXL_20230513_083940055.jpg
    PXL_20230510_104623029.jpg

  23. #48
    Join Date
    Oct 2017
    Location
    Zagreb, Croatia
    Posts
    62
    My Cars
    '78 633CSi, '81 635CSi
    Here is a few photos with a film camera. Exposition is bad but they are ok
    000048460023_###.jpg
    000048460022_###.jpg
    000048460031_###.jpg

    No particular reason but here is a picture of a horse000048460006_###.jpg
    Attached Images Attached Images

  24. #49
    Join Date
    Feb 2013
    Location
    Petaluma, CA
    Posts
    18
    My Cars
    1980 635 CSi (Euro)
    Wow, just ran across the thread. Great job restoring a pile of junk into a very nice car!!

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