closed engine case porting? yes. Sticky tape helps. Its easy doable, just use sticky tape to cover the crank case opening. VMC 177
#VMC177 #porting #vespaTUNING
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DISCLAIMER: the information shown in this video, is about THIS specific hardware. it is my personal observation documented with this video. It DOESNT automatically mean, that all such parts by this producer or seller do have or will have same issues.
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