Yx160 barrel on gpx/z155

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ioxide

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I have read that the cylinder and head from a yx160 will fit the z155 however I have noticed the yx160 is a 57mm stroke and the z155 a 55mm stroke, if I use the yx160 cylinder will it not result in a really low compression ratio?

My z155 cylinder measures 74.5mm from base to head, does anyone know the length of the yx160 barrel?

Any info would be a huge help
 

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thedozzman

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150cc, 155cc and 160cc barrels are the same height and same bore (60mm), the stroke of the crankshaft is the difference in displacement (53mm, 55mm and 57mm respectively).
 

miniriders

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I have read that the cylinder and head from a yx160 will fit the z155 however I have noticed the yx160 is a 57mm stroke and the z155 a 55mm stroke, if I use the yx160 cylinder will it not result in a really low compression ratio?

My z155 cylinder measures 74.5mm from base to head, does anyone know the length of the yx160 barrel?

Any info would be a huge help
Hey there, any updates?
 

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