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m54 parts usefull for m20?

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    m54 parts usefull for m20?

    i have access to an m54 crank, 5 pistons and 5 rods(dont ask)
    i am just curious as if these will be any benifit to my 2.7eta turbo which will someday down the road become a low compression stroker.

    ___________________
    Mark

    #2
    I'm not sure about the rods, but I know the crank is the same size as the S52 crank, 89.6mm stroke. You can create a 3.1L stroker with 86mm pistons. I'll be doing that shortly. People sometimes call them 3.2L, but it's not. FWIW, to get 3195 or 6cc you need an 87mm bore, way too big, IMO.

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      #3
      Originally posted by Justin B View Post
      I'm not sure about the rods, but I know the crank is the same size as the S52 crank, 89.6mm stroke
      -IF its a m54b30! m54b25's have the same bore/stroke as an m20b25
      1989 cirrisblau-metallic 325i

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        #4
        Good catch, truth.

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          #5
          Originally posted by mark///m3 View Post
          i have access to an m54 crank, 5 pistons and 5 rods(dont ask)
          i am just curious as if these will be any benifit to my 2.7eta turbo which will someday down the road become a low compression stroker.
          -Prob not tho
          1989 cirrisblau-metallic 325i

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            #6
            you can use the rods and the crank. pistons aren't going to do you much good though, not that a set of 5 rods is very helpful..

            also - the rule of rounding, generally, means a 3150cc engine is considered 3.2l, but 3149 would be 3.1. It's not 3195 - not that you'd get that with an M20. 3.2l would need 86.4x89.6 (3152cc), not 87x89.6. 86x89.6 is 3122, not quite a 3.2, but still larger than a "typical" 3.1.
            Last edited by nando; 07-28-2008, 07:59 AM.
            Build thread

            Bimmerlabs

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              #7
              or u can just sell me the crank!
              BMWCCA Member
              http://www.bmwcca.org

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