Motorized Bicycle Engine Kit Forum  

Sponsors



Go Back   Motorized Bicycle Engine Kit Forum > Motorized Bicycle > Motorized Bicycle General Discussion

Motorized Bicycle General Discussion All topics regarding bicycles with engines.

Reply
 
Thread Tools Display Modes
  #1  
Old 01-08-2017, 12:11 AM
SoldierBoy SoldierBoy is offline
Motorized Bicycle Senior Member
 
Join Date: Feb 2014
Location: United States
Posts: 85
Default China girl motor problem

Are parts inner changeable meaning can I take a 50cc China girl take the jug off take the piston out and the rod buy a rod a piston and a new cylinder that's for an 80cc and use it that way I bought the wrong kit :'( I wanted the 80 not the 50
Reply With Quote
  #2  
Old 01-08-2017, 10:49 AM
Agreen's Avatar
Agreen Agreen is offline
Motorized Bicycle Elite Member
 
Join Date: Feb 2013
Location: Southeastern GA
Posts: 773
Default Re: China girl motor problem

Sorry, but no. The head stud spacing is different. And no, it can't just be drilled out. It's a completely different engine. You can get just the engine, and all the other stuff will work. Carb, exhaust, cdi, etc... it's all the same.
__________________
Never stop wrenching
Reply With Quote
  #3  
Old 01-08-2017, 11:03 AM
KCvale KCvale is offline
Motorized Bicycle Elite Member
 
Join Date: Feb 2010
Location: Phoenix,AZ
Posts: 3,714
Default Re: China girl motor problem

Quote:
Originally Posted by SoldierBoy View Post
Are parts inner changeable meaning can I take a 50cc China girl take the jug off take the piston out and the rod buy a rod a piston and a new cylinder that's for an 80cc and use it that way I bought the wrong kit :'( I wanted the 80 not the 50
No you can't just randomly change parts.
The is no such thing as a 50cc 2-stroke, they are 48cc.
There is no such thing and an 80cc, they are 66cc.

An expansion chamber on a 48cc makes it damn near as strong as a 66.
An expansion chamber on a 66 gives you even more.
__________________
KC's Krusiers Builds
Reply With Quote
  #4  
Old 01-11-2017, 02:28 AM
Tyler6357's Avatar
Tyler6357 Tyler6357 is offline
Motorized Bicycle Elite Member
 
Join Date: Mar 2012
Location: Santa Barbara, CA
Posts: 697
Default Re: China girl motor problem

Here are some videos to help you ID your china girl motor. There are no universal terms for these motors and people call them by different names. This will kinda help explain the differences.

https://www.youtube.com/watch?v=rzLWYSlpFEg

https://www.youtube.com/watch?v=MMZqayAYsWo

Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 08:55 AM.


Sponsors

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
MotorBicycling.com