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Thread: Full underbody picture

  1. #1
    Join Date
    Feb 2011
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    Bayview, WI
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    1983 BMW 320i M20 Turbo

    Full underbody picture

    Anybody have a full shot of the underbody of our car? The flatter most complete picture would be best. Thanks!

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    1999 Z3 Coupe 2.8L


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  2. #2
    Join Date
    Jun 2012
    Location
    Omaha NE
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    483
    My Cars
    1983 BMW 320i
    image.jpgimage.jpgimage.jpgI have a couple but not directly under it.
    Attached Images Attached Images
    Last edited by msiert; 07-09-2017 at 10:27 PM.
    Murray

  3. #3
    Join Date
    Feb 2011
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    Bayview, WI
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    1983 BMW 320i M20 Turbo
    I'd prefer directly under if possible. Thanks tho

    Sent from my SM-G930R4 using Tapatalk
    1999 Z3 Coupe 2.8L


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  4. #4
    Join Date
    Sep 2005
    Location
    monterey, ca.
    Posts
    14,486
    My Cars
    e21, e30 m3. e46 330ci
    what is it you're trying to see, i may have a pic or two.
    Tom D

    77 e21 - m42
    88 e30m3
    04 330 dinan3
    84 r1000rt
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    all of them gray
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  5. #5
    Join Date
    Feb 2011
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    Bayview, WI
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    1983 BMW 320i M20 Turbo
    Trying to figure out best routing of my custom exhaust I am putting together. And to be able to lay it out on paper would be ideal if possible.

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    1999 Z3 Coupe 2.8L


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  6. #6
    Join Date
    Jul 2010
    Location
    San Jose, California
    Posts
    1,725
    My Cars
    E21 320i, E30 325i
    Not my car, but I was looking for something else on my computer and came across these, and then remembered about your thread.

    IMG_0111-2.jpgIMG_0112-2.jpgIMG_0113-2.jpg

    and a quick panoramic

    e21_underside_pano.jpg

    Also if you want some good pictures of an exhaust and the bends OLD MAN has some shots of his system: http://www.factoryworks.com/320iexhaust.htm
    Last edited by amarino; 07-10-2017 at 03:02 PM.
    '81 E21 320i / '90 E30 325i / '̶9̶2̶ ̶E̶3̶4̶ ̶5̶2̶5̶i̶t (sold) / '15 Toyota XW30 / '̶̶8̶0̶ ̶E̶2̶1̶ ̶3̶2̶0̶i̶A̶ (sold)

  7. #7
    Join Date
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    Location
    Bayview, WI
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    1983 BMW 320i M20 Turbo
    Perfect!!!! Thank you so much!
    1999 Z3 Coupe 2.8L


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  8. #8
    Join Date
    Feb 2011
    Location
    Kansas City, Missouri, US
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    484
    My Cars
    '79 320
    I've noticed that some are running their exhaust under the rear axle. The factory location was over the rear axle. I would think there was enough room to go over with 2.5" exhaust. Other than ease of installation, is there any other reason to run the exhaust under the axle? What, if any, are the negative effects of taking the shortcut under the axle with the exhaust?

  9. #9
    Join Date
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    1983 BMW 320i M20 Turbo
    Im running a medium case diff with e30 diff carrier sectioned into my subframe. It doesn't allow for the exhaust to go over the subframe anymore, so I'll need to go under subframe now. I'll most likely be running a frame clearance oval section under subframe to give the most ground clearance

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    1999 Z3 Coupe 2.8L


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  10. #10
    Join Date
    May 2012
    Location
    SF
    Posts
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    My Cars
    320
    Update the thread with tons of pictures once you get that sorted. I currently have my duals running under the axle, working on a solution to route it back up and over even with a medium case diff. I may mock up and e28 subframe to see if I can get the clearance back. I have the supersprint b-pipe and racing duals waiting to get installed.

  11. #11
    Join Date
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    1983 BMW 320i M20 Turbo
    Quote Originally Posted by mdelosrey View Post
    Update the thread with tons of pictures once you get that sorted. I currently have my duals running under the axle, working on a solution to route it back up and over even with a medium case diff. I may mock up and e28 subframe to see if I can get the clearance back. I have the supersprint b-pipe and racing duals waiting to get installed.
    You talking about under the axles or subframe? They are 2 totally different animals for exhaust routing.

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    1999 Z3 Coupe 2.8L


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  12. #12
    Join Date
    May 2013
    Location
    Chicago
    Posts
    474
    My Cars
    1983 e21, 2018 440i
    I am also interested i have some 3" pipe to route.


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  13. #13
    Join Date
    Feb 2011
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    Bayview, WI
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    My Cars
    1983 BMW 320i M20 Turbo
    I ordered some 2.5" SS mandrel bends that should be here Thurs. So I will start with the routing this weekend most likely.
    1999 Z3 Coupe 2.8L


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