High engine subfamily | Cylindre/Piston |
Cooling | Air |
Cylinder material | Fonte |
Number of admission transfers | 5 |
Exhaust type | Booster |
Exhaust Mount Type | A bride |
Piston material | Aluminium moulé |
Piston diameter | 39.93 |
Piston pin diameter in mm | 10 |
Piston cap | Domed |
Number of piston rings | 2 |
Piston ring material | Fonte |
Piston ring section | Trapézoïdal |
Segment lug | Décalé supérieur |
Gaskets supplied | Oui |
Spare part: cylinder seal | 214951 |
Spare part: piston | 390948 |
The S1F cylinder has a 5 transfer sweep with boosted exhaust. It gives an excellent performance from low revs.. The elliptical piston is fitted with two chromium-plated steel rings which are alloyed with the cast iron cylinder, thus increasing its longevity.