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Discussion Starter · #1 ·
I have some light ported cylinders, what i think anyway. but have no reference. do someone know how far it is between the cylinder top and the exhaust port or the degree of opening of the standard cylinders?? I am thinking about some Crankcase modifikation. Perhaps someone have some tip or picture of where to grind??
 

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Discussion Starter · #4 ·
Have checked now. seems to be just a little bit ported. Does anyone knows how to port the crankcase. should i grind to the side or??
 
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