S p e c s: VSE1M Motor

1982 - 19??
casing mouth: 3 transfer ports
induction: disc valve
bore: 66.5 mm
stroke: 57 mm
cubic capacity: 198 cc
compression ratio: 9.8: 1
bhp at rpm: 12 @ 5700
con rod length:110mm
piston compression height: 42.5mm
piston type: domed
small end diameter:16mm
big end diameter:20mm

flywheel side bearing:
drive side bearing: 613912 Piaggio only
input shaft bearing:6302
output shaft bearing (flywheel side): Piaggio only
rear wheel bearing:6204C4

flywheel side oil seal: 24x35x6
drive side oil seal: 31x62x4.3/5.8
rear hub oil seal: 27x42x10 (differs from P200E)

PX200E links:
PX200E Electrical Diagrams
PX200E scooter page

Casings: The casings are very similar to the Rally and P200 with a few very small changes.

Cranks: The crank is the same as a Rally & P200 crank which is readily available.

Standard Barrel: The standard barrel has two main ports and a smaller third port. The barrel is not really useful for tuning as all the ports and transfers are internal to the barrel casting.

Kits: Any large frame kit over 200cc.

Ignition: The P series bikes have a 12V electronic ignition system that is bulletproof. Spares are easy to obtain. There is no real option for upgrading this ignition system.

Gearbox: Most later large frame gearboxes after the Vespa 150 Sprint will fit. The clutch can be upgraded to a "Cosa" clutch for better performance.The output shaft has shims at both ends and a larger axle diameter at the rear wheel than the P200. The shift cross and selector plunger are different from the P200 models. The Xmas tree flywheel side shaft has a larger diameter than previous P200 models.