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Pinasco Master 2016 Rotary Engine Casings - Vespa P200


The Pinasco engine casings are very high quality replacement engine casings made from the finest die cast aluminium. Apart from their very precise manufacture they also feature many special details that are especially interesting for anyone committed to tuning.

Apart from the significantly larger gasket surfaces at the base of the cylinder jug barrel and the carburetor inlet port, Pinasco also offers a version of the casings featuring a reed valve intake. Having been a long time standard in the automatic sector this suction technique also offers a lot of intake for large carburetors to profoundly inhale. Additional die cast reinforcements, a larger crankshaft bearing as well as a fantastic scope of delivery add to the positive overall impression of the Pinasco engine casing.

The casings correspond to the PX models’ latest construction stage from 1992 (interior oil seal for the main shaft). The engine`s interior components and the ignition components from all 125-200cc models that were produced in 1982 and later can be used. Components from 1984 and later are to be preferred due to the improved and stronger gearbox and the alternator with a higher performance. The engine of the COSA models is also very suitable as a donator engine. They use engine casings that differ on the outside but feature the same interior components as the PX models from 1992 and later (Note that the primary gear reduction is shorter: 21/68 instead of 23/65).

Both versions feature the same reasonable improvements:

    High quality die cast aluminium with a fine surface finish
    Very precisely milled sealing surfaces
    Reinforcement ribs near the main shaft bearing on the shifter peg side and the rear shock mounting plate
    Significantly more material used at the cylinder jug barrel’s sealing surface and at the carburetor inlet
    The crankshaft bearing on the alternator side is a large cylindrical roller bearing (NU205 25x52x15mm)
    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.
    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
    The bore diameter for the silent rubbers is Ø44mm (Piaggio Ø43mm). The included silent rubber washers are stiffer and give the engine a better positioning in the frame. Please note that all standard rubbers will work, except solutions who are based on metall sleeves.
    The engine casings do not have an impressed number or prefix on them
    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*.

- 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.


- All stud bolts
- Silent rubbers + washers for the silent rubbers
- Casing gaskets
- Auxiliary shaft bushing


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