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Thread: Rebuilding my -96

  1. #26
    Join Date
    Mar 2006
    Location
    Harrisburg, PA, USA
    Posts
    318
    My Cars
    x5, 640i, 850Ci, 850CSi
    Wow. Beautiful work. What do you use to clean with, besides copious amounts of elbow grease?
    Mike Barrett
    94 850CSi, Hellrot over silbergrau dunkel/silbergrau hell
    96 850Ci, Oxfordgrun over silbergrau hell

  2. #27
    Join Date
    Nov 2018
    Location
    Sweden
    Posts
    97
    My Cars
    1996 850CI
    Quote Originally Posted by mbarrett635 View Post
    Wow. Beautiful work. What do you use to clean with, besides copious amounts of elbow grease?
    Thank you

    There is a lot of scrubbing involved but cleaning up the aluminium parts is a very gentle two-stage blasting process. First fine crushed glass. Just enough to remove corrosion and grime without removing material. Very fine details like logos and small serial numbers are preserved. Second, size 9 glass bead to get that factory satin finish.

    It gets a bit involved because I have to disassemble everything completely but it satisfies my OCD



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    Last edited by buildit; 10-29-2019 at 09:41 PM.

  3. #28
    Join Date
    Nov 2018
    Location
    Sweden
    Posts
    97
    My Cars
    1996 850CI
    The power steering pump is in really good condition, just needed a good cleaning. I bought a seal kit from @master6 and plated all nuts and bolts. Just have to reattach the serial number plate.



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  4. #29
    Join Date
    Jan 2009
    Location
    San Jose, CA USA
    Posts
    1,078
    My Cars
    91 850
    Incredible details and cleaning. Hats off to you.

  5. #30
    Join Date
    Jan 2009
    Location
    San Jose, CA USA
    Posts
    1,078
    My Cars
    91 850
    Word of caution, be sure to blow high pressure air through the inside of the intakes especially if the media used to clean them are hard enough to scratch the cylinder walls. Any bit left inside the intakes will get sucked into the cylinders and you'll be burning oil thereafter. Don't ask how I know.

  6. #31
    Join Date
    Nov 2018
    Location
    Sweden
    Posts
    97
    My Cars
    1996 850CI
    Quote Originally Posted by ChrisFuture8 View Post
    Word of caution, be sure to blow high pressure air through the inside of the intakes especially if the media used to clean them are hard enough to scratch the cylinder walls. Any bit left inside the intakes will get sucked into the cylinders and you'll be burning oil thereafter. Don't ask how I know.
    Absolutely. They are flushed out and then blown with high pressure air a couple of cycles.

  7. #32
    Join Date
    Nov 2018
    Location
    Sweden
    Posts
    97
    My Cars
    1996 850CI
    What to do when the train to you weekend plans is canceled... Fix the charcoal canister of course

    It's had a tough life under the washer fluid container. Cleaned it up, painted, washed out the filters and filled it up with active charcoal from the zoo store. Total cost about 15 euro. Much better than the price for a new one

    Got a new rubber boot on order.



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  8. #33
    Join Date
    Jan 2008
    Location
    Laguna Woods, California
    Posts
    2,136
    My Cars
    1993 850Ci, 2011 Nitro
    That blasted cannister caused my 8er to fail the dreaded California smog test. Upon disassembly it was totally rusted through on the bottom. Great job on the refurbishment.
    1993 850Ci.....162,000 miles and counting!

  9. #34
    Join Date
    Nov 2018
    Location
    Sweden
    Posts
    97
    My Cars
    1996 850CI
    Does it have that much of an impact on emissions or did they fail it because of rust?

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  10. #35
    Join Date
    Jan 2008
    Location
    Laguna Woods, California
    Posts
    2,136
    My Cars
    1993 850Ci, 2011 Nitro
    Quote Originally Posted by buildit View Post
    Does it have that much of an impact on emissions or did they fail it because of rust?

    Sent from my Pixel XL using Tapatalk
    The technician had some type of handheld probe that he was moving around the canister and I guess the readings were too high around the canister (due to rust through) as opposed to the exit of that rubber boot.
    1993 850Ci.....162,000 miles and counting!

  11. #36
    Join Date
    Nov 2018
    Location
    Sweden
    Posts
    97
    My Cars
    1996 850CI
    At some point the AC compressor has been very ill all over the engine bay. Everything in its vicinity is covered in green grime and the compressor itself looked like a boat anchor.

    Ordered a seal and gasket kit from Germany and cleaned it up.

    The friction ring on the pulley is worn away and I am looking for a replacement. The coil itself works just fine. As many compressors use metal on metal friction I have been thinking of just cleaning up the friction surfaces and see how that performs.

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  12. #37
    Join Date
    Nov 2018
    Location
    Sweden
    Posts
    97
    My Cars
    1996 850CI
    Got a package with parts today so I could reassemble the oil pump. New seals, replaced the old and scored valve with a new one and new self-locking nuts and bolts so that the pump doesn't come loose this time

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  13. #38
    Join Date
    May 2010
    Location
    Los Angeles
    Posts
    754
    My Cars
    1994 BMW 850 CSi #107
    MALMO??? My hometown. ))))
    Lycka till med allt detta.
    Board Member of SoCalEights (Marketing, Web Development & Social Media), Vice President: BMWCCA/E31 Chapter, www.cartiologyfilms.com
    Current E31s:
    1997 BMW 840Ci. Silver on Grey, 1997 BMW 840Ci Black on Beige. 1997 BMW 840Ci, black on black. 1995 BMW 850CSi. White on White SOLD.
    Client Represented E31s (Cartiology Films)
    1994 BMW 850CSi #11 USA
    1994 BMW 850CSi #31 USA
    1994 BMW 850CSi #58 USA

    Past E31s:
    1991 BMW 850i. Calypso Red on Beige Nappa and 1995 BMW 840Ci. Bright Red on Beige Nappa
    1997 BMW 840Ci. Black On Black Nappa, but changed to Dakar Yellow on Black Nappa and 1994 BMW 850CSi #27. Red On light Silver.
    1991 BMW 850i. Automatic. Red On Black and 1996 BMW 850Ci. Automatic. Midnight Blue on Gray.
    1994 BMW 850CSi. Black On Blak #107

  14. #39
    Join Date
    Mar 2016
    Location
    Frankfurt, Deutschland
    Posts
    337
    My Cars
    Le Mans Blue e39 M5
    Love the thread!

    Where did you get the rebuild parts for the starter?

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  15. #40
    Join Date
    Sep 2018
    Location
    California
    Posts
    2
    My Cars
    08 BMW 328i, 05 AcuraRSX
    Where did you find the slip rings?

  16. #41
    Join Date
    Oct 2008
    Location
    Mt. Dora, Florida
    Posts
    2,640
    My Cars
    Alpina B12 5.7, 850 CSi
    Excellent work and great attention to detail!!
    Editor, E31 NEWS - BMWCCA E31 Chapter Newsletter
    North America Representative, 8er.or Board of Directors



  17. #42
    Join Date
    Nov 2018
    Location
    Sweden
    Posts
    97
    My Cars
    1996 850CI
    Quote Originally Posted by jons View Post
    Where did you find the slip rings?
    It came as part of this kit I bought: https://www.ebay.co.uk/itm/HIGH-QUAL...-/283274087944

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  18. #43
    Join Date
    Nov 2018
    Location
    Sweden
    Posts
    97
    My Cars
    1996 850CI
    Quote Originally Posted by sreten View Post
    Where did you get the rebuild parts for the starter?
    I think I bought a kit from schmeidman: https://www.schmiedmann.se/sv/produk...2-41-1-289-499
    The planet gear with the rubber dampers I found on a swedish site: https://www.yourex.se/Article?Artnr=9002338850

    There is a detailed discussion on starter parts here: https://www.bimmerforums.com/forum/s...tarter+rebuild

  19. #44
    Join Date
    Nov 2018
    Location
    Sweden
    Posts
    97
    My Cars
    1996 850CI
    Spending some quality time in the workshop and cleaned up the throttle bodies.

    Vacuum hoses were brittle, cracked and clogged so they went straight in the bin

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  20. #45
    Join Date
    Nov 2018
    Location
    Sweden
    Posts
    97
    My Cars
    1996 850CI
    A bit of misc cleaning today. Some wheel arch covers, the heat shield under the power steering and ventilation to the alternator.

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  21. #46
    Join Date
    Nov 2018
    Location
    Sweden
    Posts
    97
    My Cars
    1996 850CI
    The heat shields for the exhaust manifolds were really grubby with rusty brackets and new ones are 55 Euro each. So, I drilled out where they were pressed together, stripped, plated and rivited them back together. Simple fix really


    Last edited by buildit; 02-01-2020 at 04:44 AM. Reason: Poor image quality

  22. #47
    Join Date
    Aug 2019
    Location
    Tujunga, CA 91042
    Posts
    79
    My Cars
    850CI740Lsezd750L95sezd
    This is the most incredible thread I've seen lately. Fk I'm just tryin' to get CD05001 slapped together so it will run. !! ( O O ) !!
    Last edited by CD05001CIA; 02-10-2020 at 08:06 PM. Reason: Spelling error

  23. #48
    Join Date
    Nov 2018
    Location
    Sweden
    Posts
    97
    My Cars
    1996 850CI
    Oil pan covered in leaked oil and level sensor rusted stuck to the pan. All three studs broken and sensor's mounting holes badly corroded.

    So I welded in three new studs and stripped, primed and painted the pan turned out quite acceptable. After a thorough flushing the sensor is working well again.

    I don't have a way of fixing the sensor's mounting holes but with a pair of washers it will stay put



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    Last edited by buildit; 02-06-2020 at 05:40 PM.

  24. #49
    Join Date
    Nov 2018
    Location
    Sweden
    Posts
    97
    My Cars
    1996 850CI
    Been working on the heads the past few days. The carbon buildup isn't that bad and no real surprises except an exhaust gasket being on the wrong way

    Stem seals look ok but will be replaced. Some of the lifters on the right bank are worn out so I might as well replace all of them.





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  25. #50
    Join Date
    Aug 2019
    Location
    Tujunga, CA 91042
    Posts
    79
    My Cars
    850CI740Lsezd750L95sezd
    Yeah the backside of your valves need cleanin'.

    New Subject:
    So, to increase your lift to 11mm from 10.5mm you process a coating (low friction type) onto your rollers, thickness 0.5mm or a little over 0.020 thousanths of an inch. You'll need to take the same amount off the back of the sintered lobe of the cams. That's 180s from lobe apex on each lobe. A machinist will understand 0.000"--> 0.020" --> 0.000" off the back.

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