Intake valve - Ø 35x7x87.6mm (Original for 1255cm³ / 1296cm³ engine - Type 804 and 812)

The kits are supplied with the following components:

• Cylinder Heads (x4)
• Domed Pistons (x4)
• Rings (x12)
• Pin (x4)
• Circle Clips (x8)

Dimensions of the various parts:

• Cylinder Head Bore Diameter: Ø 74.5mm
• Cylinder Head Flange or Top Diameter (D): Ø 89.75mm
• Cylinder Head Base Diameter (A): Ø 80mm
• Overall height including skirts of the sleeves (C): 128mm
• Height from the top of the sleeve to the base gasket area (E): 84.80mm
• Shaft dimensions: Ø 20x63.5mm (Cirlip-free mounting)
• Segment thickness: 1.75mm / 2mm / 4mm (Fireproof/Sealing/Scraper)
• Base gasket type: Paper gasket

Piston mounting direction: an arrow drawn perpendicular to the piston axis is shown on the top of the piston. It must be oriented in the direction of engine rotation during the connecting rod's downward stroke (see manufacturer's instructions or diagram).

It is essential to check the ring end gap of each piston ring before installing them on the pistons, according to the values ​​given by the manufacturer or in the supplied instructions.

During installation, the ring end gap must be evenly distributed around the piston circumference at 120° intervals. 

Segment Characteristics:

• • Segment Diameter: Ø 75.70mm
  • Thickness of Upper Segments (Fire-resistant): 1.5mm
  • Thickness of Intermediate Segments (Waterproof): 2mm
  • Low ring thickness (Scraper): 4mm

It is essential to check the ring end gap of each ring before installing them on the pistons, according to the values ​​given by the manufacturer or in the instructions provided.or the values ​​given in the instruction manual.

During installation, the ring end gap must be evenly distributed around the piston circumference at 120°.