Engine Trouble Skyhawk Gt2, No power Help!

Discussion in '2-Stroke Engines' started by Richard J. Hartnett, Mar 29, 2013.

  1. Richard J. Hartnett

    Richard J. Hartnett New Member

    Hey guys, I recently purchased a grubee skyhawk gt2 48cc engine kit, and I am not impressed with its performance. Primarily, I found that the CNS carb which came with the kit was awful, I could not set it and it leaked fuel terribly. So, I replaced it with a NT carb and noticed dramatic increase in performance Still, it dosent have the power, I know that it should have (due to rides on friends' bikes). When I engage the clutch, and rev the engine, it revs fine all the way up to its limit. However, when I try to ride it remains slow and very underpowered. I'm running on a 16:1, which other forms have told me to go to 32:1 or even 50:1 in order to get more power. I'm curious if its my ratio or carb, or something else, I have no idea at this point. Any feedback would be greatly appreciated.

  2. crassius

    crassius Well-Known Member

    16:1 is good for the run-in period - you won't see a lot of power (and shouldn't try to force it) until the engine has been run in
  3. jaguar

    jaguar Well-Known Member

    Increase the compression and jet the carb right. click on my link