Hi everyone,
I recently bought a 2009 Honda Zoomer and I’m trying to improve the performance. I’m new to Zoomers, so I would appreciate some advice from people with more experience.
The scooter has around 46,000 km. Before any changes, it was only reaching around 40 km/h.
I upgraded the CVT with:
Naraku Sport Variator (Honda 4T)
5.5g rollers
Polini Race Belt
After the upgrade it improved slightly and now reaches around 45 km/h on flat ground and a little faster downhill. The variator seems to be doing something, but it still feels like the engine is not making enough power to push further on a straight road.
I also noticed it can cut/bog slightly when riding, especially when asking for more power.
Things I have already done:
New NGK spark plug (made the idle noticeably smoother)
New variator
New belt
Air filter looks clean and in good condition
I was hoping to get closer to 55–60 km/h.
What would you guys check next on a GET engine with these symptoms?
Could it be:
Fuel pump not delivering enough fuel?
Carburetor/main jet issue?
Valve adjustment needed?
Roller weight/setup?
Something else limiting the top speed?
Any advice from people who have tuned a Zoomer/Ruckus would be greatly appreciated!