jet 48cc on a 20 inch bike will it work?

Discussion in 'Frame Mounted Engines' started by CULPRITE, Jun 28, 2010.


    CULPRITE New Member

    i was wondering if a 20" bike would work or not with a 48cc jet slant head?

    what problems would i need to over come?

    i need a reliable way to work i got a 20" cruiser i just got for my first fathers day(its a smaller bike but there the love of my bike riding life).

    now this being said i have work on bmx bike for 11 years so i know my way around a bike, will the build be hard? would it even work on a 20?and i see an spec drawling some where(i can find any) so i can at least size it up

    thanks culprite


    CULPRITE New Member

  3. Al.Fisherman

    Al.Fisherman Active Member


    CULPRITE New Member

    would i have any control issues?

    i still dont understand
    Last edited: Jun 29, 2010
  5. Al.Fisherman

    Al.Fisherman Active Member

    What do you mean by control issues and exactly what is it that you don't understand.

    CULPRITE New Member

    how do i know how much room i will need?
  7. Al.Fisherman

    Al.Fisherman Active Member

    Well what I would do is contact a supplier of that particular bike and ask them for three measurements.. the length of the two tubes that the engine will mount to and the length of the horizontal tube.... With those, a determination can be made as to the question of fitting.
  8. GearNut

    GearNut Active Member

    Try this on for size. Print it out exactly as show, even if you gotta take it to office depot or staples and have them blow it up to proportion.
    If it will fit in your frame, then an engine should fit no problem.

    Attached Files:

  9. Al.Fisherman

    Al.Fisherman Active Member

    Clearence from the crankshaft to the horizontal tube needs to be a minimun of 8 inches. At least that is what I measured on our bikes. This is having the engine mounted at the proper angle so the intake is horizontal and gives enough room for carb cable to operate smothly.