« previous next »
Pages: [1]

Author Topic: New piston but top end speed decreased kymco super8  (Read 4472 times)

Super8boy29

  • Newbie
  • *
  • Posts: 3
    • View Profile
New piston but top end speed decreased kymco super8
« on: December 08, 2021, 10:28:31 PM »
Hello, I have a super 8 50 2t 2014 model and I recently cracked the cylinder head so I had to get a new top end, I purchased it online and it said it was compatible for my bike.However this piston had a cut out window on it which my old one didn’t. I used to get 39-40 mph now it won’t go any faster than 34-35. Wondering if anyone knows what could’ve caused the decrease in top end speed. Thanks
Logged

Mark James

  • Newbie
  • *
  • Posts: 12
    • View Profile
Re: New piston but top end speed decreased kymco super8
« Reply #1 on: April 27, 2022, 03:39:50 AM »
Air leak.  Pressure test your engine.
Logged
Tao Tao 50 (sold)
Kymco Super Fever (sold)
Piaggio Fly 50 (sold)
Kymco Like 50
-Malossi BBK
-19mm keihin clone 92,38,needle clip 5
-original muffler with restrictions removed
-Polini variator w/8.5 rollers
-runleader temp/tach
Kymco Like 200i (parts bike)

souzamoto

  • Sr. Member
  • ****
  • Posts: 383
    • View Profile
Re: New piston but top end speed decreased kymco super8
« Reply #2 on: April 27, 2022, 03:00:27 PM »
Pull the carb/intake manifold and look into the barrel. Rotate the crank till the piston is at BDC, if the cut out in the piston is still visible
 then that's your problem.
Logged
Pages: [1]
« previous next »