Pinasco Vespa engine case

Pinasco Vespa engines now available

Vespa engine blocks

You can now get the new ones from us reinforced Pinasco engine housing.

The motors are available as rotary valve or diaphragm inlet for
- Vespa PX 80-150
- Vespa PX 200

Motor housing PINASCO Master / Slave for Vespa Largeframe

Pinasco manufactures brand new motor housings for the so-called Largeframe Vespa (e.g. all PX models, Sprint, Rally, Super, GT, GTR, TS, VBA, VBB, VNA, VNB).
The engine blocks are available for Vespa 125-150cc as well as for Vespa 200cc.

The housings are manufactured in two variants
ROTARY SLIDER CONTROLLED = MASTER
DIAPHRAGM CONTROLLED = SLAVE

optimizations

Both versions have the same useful improvements:

• MATERIAL
  High quality die-cast aluminum with a fine surface
• SEALING SURFACES
  Very precisely milled sealing surfaces
• STRONGER
  Reinforcing ribs in the area of ​​the main shaft bearing on the switch latch side and the shock absorber mount
• SOLID
  Significantly more material in the area of ​​the cylinder base sealing surface and the carburetor inlet
• LAGER
  The crankshaft bearing on the generator side is designed as a large barrel bearing (NU205 25x52x15mm)
• OIL SEAL
  The housings are made to accommodate metal shaft seals. Please use the version for the 200cc versions here.
• LUBRICATION
  Double lubrication hole for the bearing
• FIT
  Two additional fitting bushes = crankshafts with an excessively long stroke can do without the centering edge of the Lima half. Dimensions of fitting bushes AØ = 9,95mm, IØ = 8,40mm, h = 13,80mm
• RUBBER
  The enclosed silent rubbers are stiffer and offer better guidance of the motor in the frame
• NUMBER
  The motor housings do not have an embossed motor number or prefix
• OIL HOLE
  No drip hole for gear oil = the nonsensical drip hole, which indicates that the inner shaft sealing ring is defective, has been omitted *.

*Our tip: Run the sealed bearing as well as the external shaft sealing ring with the appropriate brake drum.

Buy Pinasco Motor here

SPECIAL FEATURES 125-150ccm

• Same silent rubbers as the 200cc models = significantly more stable and less vibrations
• Same crankcase architecture as the 200cc models:
  • On the rotary valve motors can ONLY the crankshaft of the 200cc models be used
  • thus wider rotary valve surface for more passage with a large carburettor
  • With a 200cc crankshaft, pistons with Ø16mm piston pins can be driven
  • Matching 5mm spacer and conversion bearing for Ø15mm piston pin for 125-150cc included

SPECIAL FEATURES ROTARY VALVE VERSION

• Extra large sealing surface over both engine halves, suitable for all intake manifolds
• Can be used as a 1: 1 replacement for an original motor housing

SPECIAL FEATURES OF THE MEMBRANE VERSION

• Central, full-surface membrane inlet
• Incl. Diaphragm intake, including diaphragm in RD350 format (58x48mm perforation)
• Suction rubber can be rotated 360 °, connection width carburetor = Ø34mm
• Rubber suitable for Keihin PWK28, Mikuni TMX27 / 30, Dell'Orto PHBH28 / 30, VHS24-30
• No cast-in axis for oil pump control
• No hole for oil pump drive

The enclosed fitting bush for the auxiliary shaft must be inserted by yourself. The housings are designed for use with an electric starter. Therefore, please use the fan wheel cover for electric starter models. Without an electric starter, simply close the hole in the housing with our suitable sheet metal (7671454). If transmission components other than those of the PX models from 125cc are to be used, please check the auxiliary shaft axis for compatibility beforehand and change it if necessary.
Please insert all stud bolts with high-strength screw adhesive. The cylinder studs are not oversized on one side, as is the case with the original Piaggio. Therefore, glue in the supplied Pinasco cylinder studs here as well. When screwing in the cylinder stud bolts, please ensure that any installed oil pump gear can move freely. We recommend recutting all threads and cleaning them with compressed air.

DELIVERY

• ROTARY VALVE
  • All studs
  • Silent rubbers + washers for silent rubbers
  • Housing seals
  • 125-150ccm: 5mm spacers and conversion bearings for Ø15mm
  • Bush for auxiliary shaft axis
• MEMBRANE
  • as above, additionally included:
  • Intake manifold including membrane, suction rubber, seal and small parts
  • NOTE: No screws included for attaching the intake manifold to the engine block (see: Accessories)