PINASCO tuning cylinders for classic wideframe models

Tuning cylinder for Vespa Wideframe: VM/VN/VL/VB/Acma/Motovespa/VGL1

The cylinder fits 125-150cc engines built between 1953 and 1959 with two overcurrent channels in the engine housing. The Pinasco is based on the 57 mm stroke of the 150cc models, 125cc engines with 54 mm stroke require the shaft of the 150cc models. Due to the almost doubled power, we recommend using a new crankshaft in all cases (Stoffis, Pinasco etc., see accessories). The original intake manifold can still be used, the Polini CP19 carburetor is then recommended. For more power, the intake manifold 3331742 can be combined with a Polini CP23 carburetor.

  • Displacement: 160cc
  • Stroke: 57 mm
  • Piston: Ø=60 mm
  • Cylinder material: Aluminum
  • Channels: 5
  • Cylinder head with 5 bolts
  • Piston rings: 2x chrome-plated


NOTE
: A crankshaft with 57 mm stroke is required! (see accessories)

In the download area you can see a diagram of the cylinder with a prototype of the BGM BigBox Touring and a CP23 carburetor. The high early torque (14.6 Nm at only 3600 rpm) and the impressive power of 10.4 hp at 6100 rpm are clearly visible.

More info: BLOG Pinasco 160cc on the test bench

Please note: VM/VN1/ACMA/Motovespa motor housings often do not have a sufficiently deep spindle dimension in the motor housing. In this case, please rework the motor housing accordingly (spindle approx. 0.5 to 1 mm deeper).

Note: The stud bolts required for fastening the intake manifold are not included in the set. Please order these separately (see accessories).




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General
Performance class
Sport
 
Piston pin
Diameter
15 mm
 
Spark plugs
Thread type
M14x1,25
Thermal value NGK
B8HS
Spark plug thread
kurz
 
Cylinder
Drill hole
60 mm
Type of cooling
luftgekühlt
Displacement
161.16 cm³
Motor type
2-Takt
Material
Aluminium
Piston raceway material
Keramik
Cylinder gasket set included
ja
Cylinder head included
ja
Outlet shape
1-teilig (oval)
Exhaust assembly
Stutzen
Number of boost ports
3
Number of transfers (incl. boost ports)
5
Exhaust pipe diameter
37 mm
 
Crankshafts
Stroke
57 mm
 
Piston
Number of piston rings
2
Piston manufacturing method
gegossen
 
Piston rings
Piston ring type
Rechteck-Ring
Piston ring thickness
1,0mm
 
Piston clips
Piston clip type
G-Typ
Wire gauge Piston clip
1,0mm
 
Cylinder heads
Cylinder head type
einteilig
 
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