Cylinder head -NAGY BLECHROLLER, CNC GS-Veloce (stroke=57mm)- Vespa Wideframe Vespa GS150 (VS2-VS5)

Cylinder head "GS-Veloce" from NAGY for Vespa GS150 (VS2-VS5)

Suitable for all GS150 models of the VS2 to VS5 series and the licensed GS/3 models etc. The compression ratio is approx. 1:10.

The head can be installed plug n play. The O-ring seal supplied provides the prerequisite for a good seal to the cylinder sealing surface. The solid construction and the stronger ribbing compared to the original head supports heat dissipation. The head is designed for a piston clearance of around 1 mm, which also includes the piston crown geometry of the currently available Meteor pistons. It is not necessary to change the jetting - on the contrary. This worsens the result!

However, the spark plug (long thread) must be replaced. A heat value of 250 (e.g. Bosch W4CC / NGK B7ES) or more is recommended. To be on the safe side, the ignition timing should be set to around 24 degrees VZ.