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Joined: May 27, 2014 8:44:10 GMT -5
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Post by taepha on Jun 1, 2014 22:25:13 GMT -5
I apologize in advance for asking this question, but I have to ask. I'm no expert mechanic, although I am aspiring towards it, and everyday I learn something new. I tried searching the forum as well as the web, but all I could find is internet slang for "Boy Better Know" lol. From what I have gathered it seems to be some sort of aftermarket upgrade. I'm all about upgrading my Chinese scoot to get everything out of it that I can and to increase the longevity of it.
So...what is BBK?
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Post by triker on Jun 1, 2014 22:34:12 GMT -5
BBK= Big Bore Kit. Consists of a larger than stock diameter piston, rings and cylinder .
Roy
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New Rider
Currently Offline
Posts: 16
Likes: 0
Joined: May 27, 2014 8:44:10 GMT -5
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Post by taepha on Jun 1, 2014 22:38:43 GMT -5
ahhhhh...thank you! I have a 150cc 139qmb gy6 engine what would be a good BBK kit for me? And how much more efficiency, hp, mpg, mph, etc. could/should I expect?
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Post by spandi on Jun 1, 2014 22:42:17 GMT -5
Don't apologize. Like finding your way around a computer, everyone has to go through the stage of learning and finding out. Keeping working on it, you'll get the hang of it soon enough.  |
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Post by triker on Jun 1, 2014 23:26:36 GMT -5
Ya, no need to apologize. first of all you need to find out if you have a 150cc engine or a 50cc engine. The 150cc engine is a 157QMJ and the 50cc engine is a 139QMB. Look for the engine code by the kick starter.  BBK's are usually rounded up in cc's For instance an advertised 100cc bbk is really only 83cc and the 80cc bbk is really only 73cc. Roy |
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Post by jjoshua20213 on Jun 2, 2014 7:58:00 GMT -5
BBK's are usually rounded up in cc's For instance an advertised 100cc bbk is really only 83cc and the 80cc bbk is really only 73cc. Roy Sound more like false advertisement. |
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