Author Topic: 72CC Kit in my People 50S 4T!  (Read 3086 times)

vermi

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72CC Kit in my People 50S 4T!
« on: July 03, 2010, 03:08:27 AM »
Last friday i receive mi 72cc kit from ENVIROMOTO.
In the kit i have the cylinder, piston, rings, clips, gaskets, jet #88, gas filter, UNI air filter and the instruction for installation.

To do a better jobm remove the motor of the frame of the scooter, it's easy to work on it.



 The first time i do the motor on the bike and it was hard to install the cylinder on the piston with the rings... I need to do the job a other time beacause the motor smoke and smell oil burn! >:( When i re-open the cylinder, i see some rings was not in good position!
But with the motor in my face, it was easy to do and for the valve adjustement.



Here you can see the big bore kit, the piston is bigger and you can see the carbon on the piston when i use the first time i do the motor.



I re-jet the carburator with a jet #88 and remove all the restriction inside the air filter. I didn't install the big open UNI air filter beacaus it make to much noise and it's to big to put under the seat!



I reinstall the motor on the frame and it start the first start!



After a ride, i check the sparkplug to see if everything was ok and the plug have a nice color and dry!



Vermi! ;)


wordslinger

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Re: 72CC Kit in my People 50S 4T!
« Reply #1 on: July 03, 2010, 10:19:04 PM »
...wow...now that's what i'm screaming!!!...

..so, how's it run??
..every mod (action) necessitates a (reaction) mod..

vermi

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Re: 72CC Kit in my People 50S 4T!
« Reply #2 on: July 10, 2010, 03:59:36 AM »
It's now over a week i have the kit installed and i need to check the spark plug to check if the jetting was ok.
The spark plug said it was lean again with jet #88. I buy jet #90 and #95.
Now i have jet #95 in the carburator, the motor run smooter and the color look better.

With the 72cc kit, the scooter have a better acceleration and i hit 75~80 km\h for the moment, but i need to make the running in...

art

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Re: 72CC Kit in my People 50S 4T!
« Reply #3 on: July 10, 2010, 05:44:24 AM »
Very nice!
Kymco peoples too many ;) I'm not an expert just a full time hobbiest.

AylmerFreerider

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Re: 72CC Kit in my People 50S 4T!
« Reply #4 on: March 27, 2018, 07:14:27 PM »
I was hoping you could repost the pictures.  I am looking at doing the exact same thing to by engine in the next month.
2015 Super 8 50R
72cc BBK
Polini Hi-Speed with stock boss and 6.5gr rollers
Naruko 1000RPM White Spring
Technigas Silent Pro Exhaust
3 x 1" Air Filter additions to Air Box

Viper254

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Re: 72CC Kit in my People 50S 4T!
« Reply #5 on: May 01, 2018, 01:39:40 PM »
Hey peeps,

Be careful with the big bore kits. There's 50cc 4-stroke GY6 motors out there with two different lengths of valves, and the wrong engine/big bore kit can smack the piston straight up into the valves.
Rides;

Suzuki GW250 Inazuma (2016)
Honda C70C (red, 1983)

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