Balance OEM Crank?

bangmyhead
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bangmyhead
Edited Date/Time 10/9/2012 2:32pm
the 125's piston went boom. long story short, sent the cylinder out gonna get the 144 set up with porting. I am also replacing the crank while im at it. Heres the question, is balancing a new oem crank necessary?

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gyd58
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gyd58 10/7/2012 7:51am
10/7/2012 7:51am
Would be a good idea since the 144 piston will be heavier than the oem cast piston. the oem crank should be already balanced to the oem piston but that is not always the case.
toddzilla
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toddzilla 10/7/2012 8:34am
10/7/2012 8:34am Edited Date/Time 10/7/2012 8:37am
I just asked Eric Gorr the same question. He said the piston he puts in the 144cc is the same weight as the stock oem 125cc piston, so balancing was not nessary. This however was on a yamaha so I dont know if it would apply to kawi.
Suns_PSD
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Suns_PSD 10/9/2012 2:32pm
10/9/2012 2:32pm
Necessary no, nice to have, absolutely.

My 314cc stroker kit has a balanced crank and it completely takes away most of that 2 stroke vibration.

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