Pinasco engine casings for Vespa

Pinasco engine casings for Vespa now available

Vespa engine blocks

Now you can buy the new reinforced Pinasco engine casings.

Available as rotary valve version (Master) and as reed valve version (Slave) for

– Vespa PX 125-150
– Vespa PX 200

PINASCO engine casings Master / Slave for Vespa Largeframe

Improvements

Both versions feature the same reasonable improvements:

• MATERIAL
  High quality die cast aluminium with a fine surface finish
• SEALING SURFACES
  Very precisely milled sealing surfaces
• STRONGER
  Reinforcement ribs near the main shaft bearing on the shifter peg side and the rear shock mounting plate
• MASSIVE
  Significantly more material used at the cylindre jug barrel’s sealing surface and at the caburetor inlet
• BEARINGS
  The crankshaft bearing on the alternator side is a large cylindrical roller bearing (NU205 25x52x15mm)
• OIL SEAL
  The housings are intended for being equipped with a metal oil seal (clutch side). Please use the type for the 200cc versions with a brown sealing lip.
• LUBRICATION
  Double lubrication hole for the alternator bearing.
• FIT
  Two additional dowel bushes = crankshafts with an overlong hub do not require the centering edge of the alternator side. Dowel bushes dimensions OØ=9,95mm, IØ=8,40mm, h=13,80mm
• RUBBER WASHERS
  The included silent rubber washers are stiffer and give the engine a better positioning in the frame
• NUMBER
  The engine casings do not have an impressed number or prefix on them
• OIL HOLE
  No oil drain hole for transmission oil = There no longer is a superfluous oil drain hole that shows whether the oil seal on the inside is damaged*.

*We recommend using an encapsulated bearing and an exterior oil seal with a correponding brake drum.

Buy Pinasco engine casing here

ROTARY VALVE VERSION SPECIAL FEATURES

• Extra-large sealing surface across both engine block halves, fits all intake manifolds
• Can be used as a 1:1 replacement for the standard engine casing
• The 125-150cc version features the same crankshaft housing as the 200cc models and inevitably requires a PX200 crankshaft. The rotary valve’s width was adapted to the dimension of the 200cc models. The narrower gasket of a 125cc crankshaft will not seal the surface here.

REED VALVE VERSION SPECIAL FEATURES

• Centered full surface reed valve intake
• Comes with a reed valve intakte manifold, comes with a reed valve in a RD350 format (distance holes 58x48mm)
• Intake rubber can be turned by 360°, carburetor connecting size Ø=34mm
• Rubber washer fits Keihin PWK28, Mikuni TMX27/30, Dell’Orto PHBH28/30, VHS24-30
• No moulded shaft for the oil pump control
• No hole for an oil pump drive shaft

The dowel bush for the auxiliary shaft that is included needs to be inserted. The casings are meant to be used with an electric starter motor. Therefore, please use the flywheel cover for models with an electric starter motor. For those without electric starter motor, simply cover the hole in the casing with our proper tin panel (7671454). Should you be using other transmission components than the ones of the PX 125cc models, please check whether the auxiliary shaft is compatible and modify it if necessary.
Please apply a high strength locking agent to all stud bolts. The cylinder stud bolts are not oversized on one side as is customary with Piaggio. Therefore, also glue in the Pinasco cylinder stud bolts that come with the delivery. Please make sure that when screwing in the cylinder stud bolts, any oil pump cog wheel that may be mounted can move freely. We recommend cutting all of the threads again and cleaning them out with compressed air.

ASSEMBLY NOTE
The crankshaft bearing NU205 on the alternator side does not fit flush with the edges of the engine casing.
It sticks out about 1mm toward the crankshaft.

SCOPE OF DELIVERY

• ROTARY VALVE
  • All stud bolts
  • Silent rubbers + washers for the silent rubbers
  • Casing gaskets
  • Auxiliary shaft bushing
• REED VALVE
  • As above, in addition comes with:
  • Intake manifold including the reed valve, intake rubber washer, gasket and small components
  • NOTE: Bolts for attaching the intake manifold on the engine block are not included (see: accessories)