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Old 04-05-2008, 02:15 PM
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Default How fast can I make my Zuma while keeping it 50cc?

I have a 2008 Zuma with a leo vince exhaust. I installed the springs and rollers that came with it. I also did the throttle cam mod. My question is what else can I do to my scooter to add even more to the performance while keeping it 50cc?
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Old 04-05-2008, 02:22 PM
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Raise compression, port cylinder, port intake manifold, change out reeds. All of the above will get you a higher top speed by ~5-7mph, done properly.

Can also try to increase tire size if possible, and decrease weight also if possible.
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Old 04-05-2008, 02:31 PM
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If I replaced the variator with the Athena one would I see a difference in the speed?
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Old 04-06-2008, 08:46 AM
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Cause of the law in Quebec (Canada) it restricts me from using a 70cc. Mine is in the process of being modded while still keeping it a 50cc. Go see me in the garge page 12. I have a list of the parts I put on it.
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Old 04-06-2008, 08:57 AM
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Well you can always go with a full race 50cc. Airsal, Polini, and Malossi all have 50cc cylinders that are higher compression, larger ports, better timing, etc. Depends on how much you want to spend though.
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Old 04-06-2008, 08:59 AM
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Quote:
Originally Posted by TheMontrealGuy
Cause of the law in Quebec (Canada) it restricts me from using a 70cc. Mine is in the process of being modded while still keeping it a 50cc. Go see me in the garge page 12. I have a list of the parts I put on it.
Same laws here, but who's really going to take apart your engine to see if its 50cc or 70cc? Willing to bet most wouldn't be able to tell the difference. I was worried about the same thing back in the day when I started modding, but bottom line is if its 50cc on title, thats all "they" need to know
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Old 04-06-2008, 10:46 PM
TheMontrealGuy TheMontrealGuy is offline
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Your right about that, but when the police see a scooter zoom by at 140km/h, I bet there's 90% chance it's not a 50cc, so what the use of going 70cc if my modded 50cc can go fast enough. One thing for sure though a 70cc costs less than modding like crazy a 50cc like I did.
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Old 04-07-2008, 12:26 PM
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Mill the head
Raise or widen the exhaust port
Shave the flywheel
Adjust the timing on the stator plate

All of these things I've been contemplating doing to my vino with a stock motor and leo pipe.
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Old 04-07-2008, 02:31 PM
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how do you adjust the timing on the stator plate and what exactly would that do to increase speed? Worth doing on kits larger than a 50cc?
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Old 04-08-2008, 04:46 PM
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You have to oval out the mounts. If you do some searching around the net, you'll find forums that have that info.

Chris, I've seen you at one of them. Ya know, the Invasion.
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Old 04-08-2008, 05:13 PM
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www.scooterinvasion.net?
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