Torque specs

Discussion in '2-Stroke Engines' started by 45u, Feb 18, 2016.

  1. 45u

    45u Active Member

    Has anyone figured out the torque specifications for the 2 cycle engines? Looking for ones for the 80cc motor.

  2. KenM

    KenM Member

  3. 45u

    45u Active Member

    Thanks I found this information on here for the head nuts.
    Torque 8mm to 120 to 175 INCH POUNDS
    Torque 6mm to 60-70 INCH POUNDS
  4. KenM

    KenM Member

    Be careful . Ken:
    Last edited: Feb 19, 2016
  5. crassius

    crassius Well-Known Member

    I use 8mm head bolts at 10 to 12 foot pounds & 6mm bolts at 6 to 8 foot pounds. Using those values for over 8 years on getting close to 1000 motors now.
  6. butre

    butre Well-Known Member

    kenm, you're thinking in foot pounds instead of inch pounds. 175 inch pounds is 14.5 foot pounds. 18 foot pounds is too tight.
  7. KenM

    KenM Member

    Yes, thanks Mr. Butre, I just thought of that now!:eek:
    Sorry Jeff for the wrong info!:oops:
    Keep looking up! Ken.
  8. 45u

    45u Active Member

    Max torque for GOOD cast aluminum 8mm is around 204 inch pounds which is 17 foot pounds. Being we are talking about Chines cast aluminum I sure would not got to the high side or max.
    Thanks Jeff
    Last edited: Feb 22, 2016
    KenM likes this.
  9. Legwon

    Legwon New Member

  10. 45u

    45u Active Member

  11. danlandberg

    danlandberg Member

    Stop 1/4 turn before it strips or snaps. That's still too tight. LoL