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Post by ricardoguitars on Apr 7, 2015 11:31:24 GMT -5
I'm looking for a BBK for my 125cc scoot, looks like all the BBKs are for 50cc and 150cc; how do I know which one works on my scoot? The engine is 1P52QMI (125cc long case).
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Post by dmartin95 on Apr 7, 2015 15:17:05 GMT -5
I'm looking for a BBK for my 125cc scoot, looks like all the BBKs are for 50cc and 150cc; how do I know which one works on my scoot? The engine is 1P52QMI (125cc long case). The 1P52QMI and 1P57QMJ are identical other than piston size. You can go up to 61mm without boring on some kits. It's dependent upon the piston sleeve skirt size. GY6 2V cylinder size: 52.5, 58.5, 59, 60 , 61, 62, 63 - A block 63, 65, 66 and 67mm - B Block Diameter of cylinder and distance: 52.5 x 57.8mm 125cc Diameter of cylinder and distance: 57.4 x 57.8mm 149.6cc. ----------------------------------- In short, anything that works for a 150cc will work for yours. |
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Post by ricardoguitars on Apr 7, 2015 16:19:07 GMT -5
I'm looking for a BBK for my 125cc scoot, looks like all the BBKs are for 50cc and 150cc; how do I know which one works on my scoot? The engine is 1P52QMI (125cc long case). The 1P52QMI and 1P57QMJ are identical other than piston size. You can go up to 61mm without boring on some kits. It's dependent upon the piston sleeve skirt size. GY6 2V cylinder size: 52.5, 58.5, 59, 60 , 61, 62, 63 - A block 63, 65 and 66mm - B Block Diameter of cylinder and distance: 52.5 x 57.8mm 125cc Diameter of cylinder and distance: 57.4 x 57.8mm 149.6cc. ----------------------------------- In short, anything than works for a 150cc will work for yours. Thank you very much mate, that's what I needed to know  |
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Post by dmartin95 on Apr 7, 2015 19:54:43 GMT -5
You're welcome.
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Post by jerseyboy on Apr 7, 2015 20:23:03 GMT -5
My 60mm was a tight fit in my 157QMJ but it slid in like a glove.
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