what to do when engine shifts ?

Discussion in '2-Stroke Engines' started by retromike3, Oct 27, 2009.

  1. retromike3

    retromike3 Member

    I have a Zoomcycle engine and a Kings 36 rear sprocket with a SBP pipe. The problem I get is that the engine "shifts" top the left side making the chain go slack. My engine works flawlessly It start in a second and idles without a problem, But its no good if I can't have it stay were it is. Is there a torc setting for the frame mount so I know how much is enough?:-/

    Mike Frye

  2. bluegoatwoods

    bluegoatwoods Well-Known Member

    Well, you're not going to want to torque the stock bolts very much. Stripping the threads will be likely.

    It almost sounds as if your bike's tubes are a bit too narrow for your mounts. Maybe you could shim them with sections cut out of an old inner tube.
  3. machiasmort

    machiasmort Active Member

    What kind of bike is it mike?
  4. Al.Fisherman

    Al.Fisherman Active Member

    Since I had the same problem, and I refuse to torque the mounting studs over 50 inch pounds, I made this mod. Have 250 miles on this mod and haven't so much as needed to put a wrench to the mounts. The "L" bracket is held in place with all thread and locked with nuts as shown, nothing else, and it won't budge.

    Last edited: Oct 28, 2009