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Thread: e30 calipers on e21 323 trailing arms?

  1. #26
    Join Date
    May 2010
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    Vancouver BC
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    1,192
    My Cars
    80 320is, 98 328is
    im going to be doing this really soon but does anyone have before and after pics of the e30 rear calipers?

  2. #27
    Join Date
    May 2010
    Location
    Hobart, Tasmania Australia
    Posts
    729
    My Cars
    1982 BMW e21 320i
    yeah you cant fit these calipers to a drum brake rear end, they have nothing to bolt to on the drum trailing arms, so you would need to make brackets, not really worth it considering there is a factory option for disc brake rear (323i) im pretty sure all the rear disc options are in the FAQ's. the main reason for this is to use a better designed e30 caliper rather then the flexible old 323i ones.
    Last edited by Beemer Tech; 05-17-2011 at 08:23 PM.
    B Road Blaster

  3. #28
    Join Date
    Sep 2007
    Location
    Portland, Oregon
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    1,572
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    E39 Touring, E53






    As promised, here's my after. The E30 ebrake cable didn't work either. You need an e21 323i brake cable, go figure

    Bucket

  4. #29
    Join Date
    May 2010
    Location
    Vancouver BC
    Posts
    1,192
    My Cars
    80 320is, 98 328is
    awesome thanks for that.


    do you also have a picture of the holes you had to drill?

  5. #30
    Join Date
    Apr 2004
    Location
    Boston
    Posts
    7,444
    My Cars
    1979 323i BMW. 2003 GTI 20 V Turbo
    I am presently working on this as well. I have a set of e21 323i trailing arms, and a set of 325i IX caliper kuckles.

    I noticed that with this set, the screws actually go all way threw the E30 carriers without redrilling. I am going to start grinding the center tabs to .580"

    Last edited by jjgbmw323; 01-07-2012 at 06:29 PM.
    "..Horsepower is a measure of work done over time, or the rate at which work is done."




    http://www.cardomain.com/ride/579694/1


  6. #31
    Join Date
    Oct 2010
    Location
    Central Jersey
    Posts
    828
    My Cars
    1979 335i
    Can anyone confirm that the brake lines you need to use are the 6 piece e36 stainless steel braided lines?

  7. #32
    Join Date
    Jun 2005
    Location
    Stratham, NH
    Posts
    762
    My Cars
    1983 320i + 2014 M235i
    Quote Originally Posted by E21fun View Post
    Can anyone confirm that the brake lines you need to use are the 6 piece e36 stainless steel braided lines?
    When I got stainless lines for my 323i trailing arm conversion, I measured the lengths of all of the rubber brake hoses, gave the dimensions to my guy at BavAuto and they put together a set for me. Everything fit up without a hitch, although the lines at the calipers had to make bit of an extra curl. That was a few years ago, but I bet they'll still do that.

    NOTES: I'm using e30 calipers (modified to fit the 323i mounting points). As others said earlier in this thread, you have to use 323i emergency brake cables because they are the only ones that will work in an e21 for this setup. Good used ones are super scarce and new ones are about $30 each. One more expense to add to the budget for this conversion.
    Attached Images Attached Images

  8. #33
    Join Date
    Apr 2004
    Location
    Boston
    Posts
    7,444
    My Cars
    1979 323i BMW. 2003 GTI 20 V Turbo
    Quote Originally Posted by jjgbmw323 View Post
    I am presently working on this as well. I have a set of e21 323i trailing arms, and a set of 325i IX caliper kuckles.

    I noticed that with this set, the screws actually go all way threw the E30 carriers without redrilling. I am going to start grinding the center tabs to .580"

    I have been sanding down the center tabs on the e30 calipers, and one side of the caliper bracket is done, when i complete this task I will post pics of them mounted to an extra set of e21 323i trailing arms that I have.....
    "..Horsepower is a measure of work done over time, or the rate at which work is done."




    http://www.cardomain.com/ride/579694/1


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