Cylinder -PARMAKIT ECV 121cc, Ø55mm- Vespa PV125 ,ET3 125, PK80-125

Parmakit ECV 121cc - legal tuning for driving license A1 and class B

The Parmakit ECV 121cc is ideal for all tuners with driving license class A1 (up to 125cc, 11kW) or car driving license (class B, if issued before 01.04.1980).

This cylinder kit does not exceed the maximum cubic capacity permitted for this license, but the ECV still offers plenty of tuning potential. This means that the 15 hp permitted by law can be fully utilized (with a reworking of the cylinder). If the TÜV approves the conversion work (ask about the conditions beforehand), the whole thing can be ridden on the road completely legally.

SUITABLE FOR
The cylinder fits all Vespa V90, V100, SS90, 90 Racer, PV125, ET3, PK80, PK100, PK110, PK125 models. With a 125cc model crankshaft, it also fits 50cc model engines such as V50, 50N, SR50, SS50, PK50. Engines with less than 125cc from the factory also require long cylinder studs, a cylinder cover and exhaust for 125cc models (see accessories).

FEATURES

• Cylinder material: hard ceramic (nickel-silicon) coated aluminum (AlNiSi)

• Bore: Ø55mm

• Stroke: 51 mm (standard stroke of 80-125 cc models)

• Overflow channels: 5

• Exhaust shape: 1-piece, oval

• Piston: Cast iron, (coated)

• Piston rings: 2x 1.2 mm

• Exhaust cross-section: Ø28mm

• Outlet width: 31.5 mm (chord dimension) = 57 %

• Exhaust stud bolt: M8

• Distance between outlet studs: 52 mm

• Recommended crushing edge: 1.1 - 1.2 mm

• Tightening torque cylinder head nuts: 10-11 Nm (crosswise)

• Spark plug: Short thread (B8HS/B9HS or W3AC/W2AC)

• Ignition setting: As original (18-20° v.Ot.)

• Control angle: approx. 122/170° (depending on foot gasket thickness used)

In the performance diagram below, an unmachined Parmakit ECV cylinder was tested on a K5 class engine.

Engine components:

• Exhaust: Polini 'Banana'

• Carburetor: Dell'Orto PHBL24

• Intake manifold: Polini diaphragm

• Crankshaft: Mazzucchelli Racing

• Ignition: PK series (pole wheel 1700gr.)

If you are aiming for the full 15 hp, you should rework the exhaust window to achieve both surface area and a larger exhaust control angle. This will significantly increase the power output. To achieve high torque even at low revs, we recommend the "BGM Pro Banana Sport" exhaust. This delivers high peak power with early torque.

NOTE: Depending on the engine housing, the cylinder may have to be touched slightly at the base sealing surface on the alternator side so that it is flush with the engine sealing surface. In addition, the enclosed exhaust gasket unfortunately has an internal diameter that is too large. To ensure that the exhaust seals perfectly, we recommend ordering a separate exhaust gasket (7675302, see accessories).