No more playing the lottery with old housings: If cracks, worn bearing seats or damaged rotary valve surfaces put the brakes on rebuilding, a brand-new engine housing is the clean solution. This version goes one step further: The half of the housing on the alternator side is already spindled out to Ø98.8 mm. This means that even oversized crankshafts such as the Quattrini 60 mm stroke shaft for the M244 cylinder can be installed in this housing area without reworking.
OEM look, modern reserves: The housing is created from new casting molds and comes with a clean, homogeneous surface. Critical areas are structurally reinforced without compromising the look.
Long stroke without milling stress: With many long-stroke crankshafts, the alternator side is the bottleneck because the cheeks have a larger diameter. This version is already spindled out to Ø98.8 mm. This means that crankshafts with a larger cheek circumference, for example the Quattrini 60 mm stroke shaft for the M244 cylinder, can also be fitted to the housing without additional reworking. Max Quattrini specifies a spindle dimension of Ø99.50 mm for its crankshaft. In practice, however, this larger dimension can cause problems at the sealing edge and centering. The Ø98.80 mm dimension used here has proven to be sufficient and offers approx. 0.15 mm of circumferential clearance. This makes long-stroke setups up to 62 mm stroke much simpler and easier to plan. This saves time and reduces the risk of machining errors, especially for engines that need to reliably cover touring and everyday use.
Rotary slide base: The rotary slide itself has the standard Piaggio dimension, which means that conventional PX200 crankshafts can also be used without any problems. The large, cleanly machined sealing surface provides a solid base for close-to-production engines, touring setups and powerful street engines.
Brand new casting Lima side Ø98.8 mm 0.15 mm clearance all round Long stroke up to 62 mm Rotary valve Piaggio dimension Elestart and separate lubrication
The housing is prepared, but can be installed cleanly and inconspicuously:
Note: When converting, always check the existing equipment status (ignition, covers, add-on parts). Peripherals can be adapted depending on the model and year of manufacture. Spanish Motovespa models may differ in details from Italian PX200 engines depending on the year of manufacture and market version.
| Type | OEM motor housing for Vespa Largeframe 200 |
|---|---|
| Version | Rotary valve housing, Sport version |
| Cast iron | Brand new, from new molds |
| Alternator side | Already spindled out to Ø98.8 mm |
| Clearance | Approx. 0.15 mm circumferential clearance for oversized crank webs |
| Practical note | Quattrini recommends Ø99.50 mm, Ø98.80 mm has proven to be sufficient in practice due to sealing edge and centering |
| Long-stroke suitability | For crankshafts with larger cheek circumference, e.g. Quattrini M244 stroke 60 mm, up to 62 mm stroke |
| Rotary slide | Standard Piaggio dimension, suitable for conventional PX200 crankshafts |
| Oil pump | Prepared, can be used or decommissioned |
| E Start | Prepared, use depending on body and peripherals |
| Delivery condition | Silent rubbers and stud bolts fitted, without bearings |
| Suitable for | Vespa P200E, PX200, PX200E, late Rally 200 and Motovespa 200 models depending on peripherals |
| Mounting instructions | Check freedom of movement, timing, bearings, seals and peripherals before assembly |
This PX200 / P200 engine case combines a brand-new OEM base with practical reserves for modern largeframe setups. The housing half on the alternator side is already spindled out to Ø98.8 mm and also accommodates large long-stroke crankshafts such as the Quattrini 60 mm stroke shaft for M244 setups without reworking in this area. The dimension offers approx. 0.15 mm circumferential clearance and at the same time protects the sealing edge and centering compared to a larger spindle dimension such as Ø99.50 mm. At the same time, the rotary slide remains in the standard Piaggio dimension so that classic PX200 crankshafts can still be used without any problems.
DE | €
