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Thread: Let The M73 Swap Begin!

  1. #101
    Join Date
    Dec 2013
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    Wow, that is looking pretty clean! How did you avoid getting sand or media in the engine when you blasted it? Is that silver or aluminum paint that you used to coat all the parts, like timing covers, manifolds, etc?

  2. #102
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    Quote Originally Posted by JDP530 View Post
    Wow, that is looking pretty clean! How did you avoid getting sand or media in the engine when you blasted it? Is that silver or aluminum paint that you used to coat all the parts, like timing covers, manifolds, etc?
    All the holes were blocked off very well, and soda was used on sensitive parts. This was high temp aluminum paint.

  3. #103
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    That's brilliant work, and looks great!
    Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i


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  4. #104
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    Transmission was nice and smooth but I think we might upgrade the differential gearing, because even know this engine will put out at least 360 Hp the Euro 850 diff is only 3.15 on the 4 speed auto.. that's pretty terrible.
    Bringing it to atleast US 3.64 gearing will help the feel of the car a lot!!

  5. #105
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    Need an answer on the jesus bolt, which one to use? Installed the harmonic balancer with the timing gear holder hub onto m73 crankshaft, is M73 bolt ok to use ? Remember someone mentioning another bolt has to be used maybe N73 one? Was it Wokke??

  6. #106
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    Getting there finally!
    Well the M73 bolt seems to work just fine? Its longer than m70 bolt and m73 crankshaft is shorter. Not sure why wokke suggested to use a different bolt? Wokke?

    Sent from my SM-G925T using Tapatalk

  7. #107
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    Quote Originally Posted by CDO5OO1A View Post
    ALSO check position of spark rotors should be like pic. Yours don't look set up yet. Both are same position? (see pic)

    Attachment 623239
    Noticed that too, can you send pic one more time, cannot see attachment

  8. #108
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    Quote Originally Posted by CDO5OO1A View Post
    Here it is...
    Attachment 623240
    Thank you, I will correct.

  9. #109
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    Excellent progress sir! With my new job keeping me extremely busy, I have made the rough decision to outsource the engine swap. Using a great shop here in Carmel and we are slated to get started at the beginning of April.

    Will still take lots of pics and document, but you are doing an awesome job!!


    Sent from my iPhone using Tapatalk
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  10. #110
    Join Date
    Jul 2014
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    '91 e31 M70 |'01 e38 M73

    Let The M73 Swap Begin!

    Quote Originally Posted by btnh View Post
    what shop you using in carmel?
    McGinity Motorworks. Tyler is the owner. Great guy. They are super busy, but reach out to him and tell him Zach sent you.


    Sent from my iPhone using Tapatalk
    Last edited by adwebinc; 03-12-2018 at 04:46 PM.
    MY SPEEDO ON THE 'BAHN!!! - @155!
    '07 e65|N62 - Alpina B7 - Black Sapphire|Black|Loaded
    '02 e46|M54 - Orient Blue|Beige|'Vert
    '00 e39|M52 - Anthrazit Metallic|Grey (Daughter's)
    '01 e38|M73 - Anthrazit Metallic|Schwarz|Shadow-Line
    '91 e31|M70 - Schwarz|Schwarz|M70

    '13 328i Auto - Black Sapphire|Coral Red|Sport Line|GONE
    '05 545i SMG - Jet Black|Black|Bamboo Anthracite|GONE
    '07 335i Auto - Montego Blue|Grey|GONE
    '05 545i SMG - (Euro Delivery 7/22/05)|Black Sapphire|Auburn|GONE
    '97 528i Auto - GONE

  11. #111
    Join Date
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    997 turbo,91 e31 ,02e39
    i got a big job im thinking of outsourcing, what shop in carmel you using?

    Quote Originally Posted by adwebinc View Post
    Excellent progress sir! With my new job keeping me extremely busy, I have made the rough decision to outsource the engine swap. Using a great shop here in Carmel and we are slated to get started at the beginning of April.

    Will still take lots of pics and document, but you are doing an awesome job!!


    Sent from my iPhone using Tapatalk

  12. #112
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    1993 850Ci
    Quote Originally Posted by adwebinc View Post
    McGinity Motorworks. Tyler is the owner. Great guy. They are super busy, but reach out to him and tell him Zach sent you.
    Sent from my iPhone using Tapatalk
    Will do!
    1993 850Ci.....160,000 miles and counting!

  13. #113
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    Progress pics over the last month and finally we have ignition and a wonderfully running M73 in a 1991 850!!! Very exciting!!!

    Sent from my SM-G892U using Tapatalk

  14. #114
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    Apr 2008
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    Toronto
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    850i, Alpina B7, E61
    Always good to see another swap.

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