VMC Thermal Group ET7-60 144cc Ø 60mm And Stroke 51mm for Vespa Primavera - ET3 - PK Die-cast head with lateral spark plug

Description

7-port aluminum cylinder, shell molding technology, Barrel with Nikasil treatment

Bore diameter 60mm Stroke 51mm Displacement 144cc, EXHAUST LIGHT WITH BOOSTERS

Phases Main transfers 128� Exhaust 188�, distance between exhaust studs 60mm, diameter 32mm oval exhaust outlet

The exhaust that with a slight filing can be brought to 36mm to adapt to our Evo SeiDue and Kifly 62 mufflers

Piston with 2 Rik steel rings complete with pin and stops.

Head in die-cast aluminum with SIDE spark plug with 4 additional fixing screws.

Squish 1.1mm � 0.1mm. Tightening M7 stud nuts: 11�12 Nm, Tightening M6 screws 10�11 Nm

Complete with nuts and bolts and paper cylinder gaskets of various thicknesses.

It is a cylinder suitable for extreme processing.

Mounted with a VMC Evo 62 it requires a close change and with more generous expansion mufflers such as the VMC Kifly 62 it can reach powers in the order of 30hp

Mounted with the Vmc Siluro Sport, the cylinder transforms into a fast touring engine with generous torque right from low revs and with excellent extension.



Warning: To be mounted on Piaggio crankcase it is necessary to eliminate the crescent on the crankcase base and bore the cylinder mouth on the crankcase with a diameter of 64mm for a depth of about 8mm to let the cylinder liner enter the crankcase .

THIS OPERATION CAN BE CARRIED OUT WITH A HAND MILL USING THE STEEL GUIDE SUPPLIED WITH THE KIT, SCREWING IT TO THE CYLINDER STUD HOLES.

New model of CNC machined aluminum head made in Italy, Steel segments Steel pin Steel stops Squish 1.5 mm 0.1mm. Tightening of nuts 11 Nm Tightening of screws 12 Nm Cylinder gaskets in paper / aluminum.

Road traffic is prohibited.