38 or 40mm?

Discussion in 'Performance Mods' started by Wags, Sep 17, 2016.

  1. Wags

    Wags Active Member

    Is the zl rod a 38 or 40mm? I need to replace my crank and cylinder.

  2. butre

    butre Well-Known Member

    z-l rods are 38mm

    refer to this video
  3. Wags

    Wags Active Member

    I find it interesting you refer me to this video. This is the exact video that has me second guesing what I thought I already knew. Everything else I've read states the zl rod belongs in the 38mm family. Fred in this video calls it a short rod but it is in the 40mm stroke pk80. Is it possible I am completely misunderstanding him?
  4. jaguar

    jaguar Well-Known Member

    all because it's advertised as a 40mm stroke don't mean it is.
    assemble it all except for the head and measure the stroke.
  5. Wags

    Wags Active Member

    That makes sense. Thank you.