49cc HT head stud length?

Discussion in '2-Stroke Engines' started by Pablo, Sep 11, 2008.

  1. Pablo

    Pablo Motored Bikes Sponsor

    I've never owned a 49cc HT engine. Are the jug studs the same length as the 67cc? How long are they?

  2. Bronzebird

    Bronzebird Member

    My manual shows the jug screws to be 6mm x 112mm. I asked the question in another post," where to buy studs" thread. I would think the threads are bigger, like 8mm. I do not want to untorq heads and then try to find parts.
  3. Pablo

    Pablo Motored Bikes Sponsor


    Looks like pretty much all head studs I've checked are 4.4-4.5" long regardless of displacement.

    Three thread sizes have been used as far as I know. M6X1.0, M8X1.0 and M8X1.25