S50 bore question

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  • Maroulesj
    Wrencher
    • Apr 2012
    • 206

    #1

    S50 bore question

    so my s50 cylinders are tapered, if i bore the s50 to the s52 specs, (86.4mm)
    and i keep my s50 crank, and i throw in a set of s52 pistons. would i use the s50 rods or the s52 rods? are the pins the same?
    James A. Maroules
    Cell: 201 587 6565
  • nando
    Moderator
    • Nov 2003
    • 34827

    #2
    S52 pistons wont work. The pin height is different. You need an s52 crank too.

    Both rods are 135mm.
    Build thread

    Bimmerlabs

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    • e30style
      Advanced Member
      • Sep 2012
      • 194

      #3
      +1...I just did this with my s50. Bored with S52 crank, pistons and rods (rods are the same).

      Comment

      • Maroulesj
        Wrencher
        • Apr 2012
        • 206

        #4
        im probably just gunna bore .5mm oversized , get je pistons and call it a day. any idea what rods i should use?
        James A. Maroules
        Cell: 201 587 6565

        Comment

        • BenM
          R3VLimited
          • Nov 2006
          • 2184

          #5
          If you can find some stock S52 pistons and crank you'd only need to overbore +.4mm and you can reuse your S50 rods.
          Originally posted by BillBrasky
          E36's are the Stephen Baldwin of the 3 series family. They barely hold everything together and they only sold a lot because of the popularity of their older sibling.
          1991 318i Alpine II - S50/5-lug swapped - track car
          1989 325i Cirrusblau - Daily
          1970 2500 - Malaga over Grey Cloth
          2012 F350 6.7PSD

          Comment

          • Maroulesj
            Wrencher
            • Apr 2012
            • 206

            #6
            anyone one know if i can use stock s50 rods on the je oversized pistons Part# 297180?
            James A. Maroules
            Cell: 201 587 6565

            Comment

            • Danny
              Moderator
              • Feb 2008
              • 14216

              #7
              I bet JE would know.

              Comment

              • Maroulesj
                Wrencher
                • Apr 2012
                • 206

                #8
                Just shot JE an email, lets see what happens lol
                James A. Maroules
                Cell: 201 587 6565

                Comment

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