New Rider
Currently Offline
Posts: 25 
Likes: 0
Joined: Jan 25, 2017 14:53:18 GMT -5
|
Post by sirtokesalot on Sept 13, 2017 8:27:55 GMT -5
i found a what i think is a big bore kit inside of a house ive been cleaning out and i am trying to figure out what cc it is? the piston measures 2 inches across let me know if more info is needed.
|
|
|
|
Post by tortoise on Sept 13, 2017 9:10:00 GMT -5
piston measures 2 inches across 2 inches = 50mm . . 139QMB engine? |
|
New Rider
Currently Offline
Posts: 25
Likes: 0
Joined: Jan 25, 2017 14:53:18 GMT -5
|
Post by sirtokesalot on Sept 13, 2017 9:57:50 GMT -5
yes there is a gy6 scooter there at the house i have to sell as wll with a 100cc kit installed. i found the original 50cc piston and cylinder in the garage and not far away from it in the trash pile i found a what appears to be brand new 50mm piston and cylinder. what does the 50mm piston = in cc size?
|
|
|
|
Post by pistonguy on Sept 13, 2017 12:20:52 GMT -5
.7854 X Bore X bore X Stroke=cc's .7854 X 50 X 50 X 41.5=81.485cc's To correctly measure the Piston, measure at the Bottom of the Piston Skirts  degrees to the Wristpin. ok excuse the emojie dude I can't seem to be able to edit it out. Theres is No Such thing as a Actuall 100cc kit for a GY50cc. The Scammers are just "naming" the kit so. The math don't lie. |
|
