The Polini crankshaft «Tuning» with 57 mm stroke is a racing crankshaft for rotary valve engines, suitable for your Vespa PX 200, P 200, Rally 200 and Cosa 200.
The finely balanced tuning crankshaft impresses with a stable connecting rod and a flow-optimized steering cheek. The extended intake control angle allows the timing cross-section at the rotary valve to be increased, perfect if you want to tune your large-frame engine cleanly for bandwidth and speed. With 110 mm connecting rods, it is suitable as a robust basis for new builds or if you want to give your engine a stable upgrade. The timing is 138° / 5° after TDC.
| Dimension needle bearing | 16x20x20 |
| Manufacturer | Polini |
| Material | Steel |
| Cheek type | standard |
| Crankshaft stroke | 57 mm |
| Connecting rod length center-center | 110 mm |
| Thread type | MF12x1.5 (fine pitch thread), MF12x1.25 (fine pitch thread) |
| Total length of crankpin on clutch side | 58.8 mm |
| Thread length | 14.5 mm, 15.5 mm |
| Total length crankpin ignition side | 77.7 mm |
| Ø crank webs | 97.9 mm |
| Ø Connecting rod eye | 20 mm |
| Ø piston pin (B) | 16 mm |
| Ø Bearing seat (clutch side) | 25 mm |
| Ø Bearing seat (ignition side) | 25 mm |
| Wide crank webs | 39.1 mm |
| Area of application | Tuning |
| Control time according to O.T | 138 °, 5 ° |
| Vespa | Vespa PX, T5, Cosa - P200E · VSX1T · 1977–1984 (Ignition Switch on Steering Head) , PX200 · VSX1T · 1984–1993 Lusso / Arcobaleno , PX200 · VSX1T · 1993–1996 Classic , PX200 · VSX1T · 1997–1999 (Disc) , Cosa 200 · VSR1T · I 1988–1992 II 1992–1998 Vespa Rally, Sprint, GT, GTR, TS, SS180, GS160 - 200 Rally · VSE1T · 1973–1979 |
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