Engine case for Polini Big Evolution 70cc cylinder
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To improve the processing and tuning of Piaggio engines for track and facilitate, Polini offers two specific housing for the? Big Evolution 70? and? Big Evolution 94? Cylinder on. The Piaggio original housing is to be drilled at the Polini drive shaft with the connecting rod of 85mm mount. In addition, the cylinder collar as well as the port and the ports of the intake will be spindled to guarantee a perfect fit of the cylinder and the optimum fuel supply. Drilling and spindle work is carried out on computer-aided, numerical control systems, to obtain the maximum precision.