Exhaust size?

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  • e30325ic
    E30 Addict
    • Dec 2004
    • 491

    #1

    Exhaust size?

    Well I finally got back to working on the old 318 this weekend. I am ready to take it to the muffler shop tomorrow and I am not sure what would be the proper size for a single exhaust. I am thinking 2.5". I have an M50 with Fleabay headers and was planning a 2 into one and single all the way out. Since the 318 had a single exhaust tip I wanted to stay that way to make it look stock. Thanks for the help in advance.
    sigpic
    1990 E30 325ic (sold for more than I paid for it after 5 Years)
    1995 E30 325e (in progress)
    1987 E30 325is (totaled)
    1990 E30 325i
    1991 E30 318is M50 PWR
    1996 E36 328ic
    1997 Z3
    2006 F150 Super Crew 5.4L 6.5' bed The work horse (need something to drag all these old BMW's home for resurrection.)
  • e30_kid89
    E30 Addict
    • Apr 2006
    • 489

    #2
    Yep, 2.5" single for a M50 will be just fine!

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    • e30325ic
      E30 Addict
      • Dec 2004
      • 491

      #3
      Thanks, that is what I was leaning to.
      sigpic
      1990 E30 325ic (sold for more than I paid for it after 5 Years)
      1995 E30 325e (in progress)
      1987 E30 325is (totaled)
      1990 E30 325i
      1991 E30 318is M50 PWR
      1996 E36 328ic
      1997 Z3
      2006 F150 Super Crew 5.4L 6.5' bed The work horse (need something to drag all these old BMW's home for resurrection.)

      Comment

      • drifty340i
        E30 Enthusiast
        • Oct 2004
        • 1076

        #4
        2.25 or 2.5 no bigger
        sigpic340hp V8 e30 FINISHED!!!!!
        Quick vid for ya ;) http://www.youtube.com/watch?v=vp5Eaf8xOgM
        NEW One on the track :)
        http://www.youtube.com/watch?v=K-AX5SzSLnk
        Cleaning up some 911s and Jap turbos
        http://www.youtube.com/watch?v=Ad79wsLdle4

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