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 cast (spark plug position like original)
8-bolt cylinder head
The generous channel surfaces 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 like 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