Racing cylinder VMC SUPER G 177CC

Powerful cast iron cylinder with 177ccm for Vespa Largeframe

VMC offers different cylinders for the Vespa Largeframe models. The main distinguishing feature is the cylinder base material used.
The SUPER G 177 shown here is made in grey cast iron which makes it inexpensive, but still has a powerful cylinder layout.

  • Bore: Ø63mm

  • Stroke: 57mm (series)

  • Connecting rod length: 105mm (standard)

  • Piston: cast aluminum

  • Piston rings: 2pcs, 1mm thickness

  • Cylinder head: Aluminum die casting (spark plug position center/center)

  • 8-bolt cylinder head

The generous channel areas do not require long timing angles for its high power capability.
With 114°/173° and the resulting 29.5° advance intake angle, the cylinder is not sensitive to high revs but still very sensitive to a good box exhaust system such as the BGM Touring 2 due to the large advance intake.

  • Head angle: 114°/173°

  • Recommended pinch point: 1.0mm (±0.1mm)

  • Tightening torque cylinder head bolts M6: 10-11Nm

  • Tightening torque cylinder head nuts M7: 14-15Nm

  • Enclosed gaskets: 0.2mm, 0.3mm, 0.4mm

AI-translation

OEM numbers (for comparison purposes only)
Scooter Center:
VMC1899
VMC:
001899
Avotecnica:
001899
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