Exhaust valve Ø 34.5x8x108mm

4L: Box / 354 / HAO-146 / HAO-163 / HAO-191

R5: Box 385 / NG5

• Cooling fan: Pusher or Puller
• Universal Spal connector (requires modification depending on specific vehicle wiring)
• Observe correct wiring polarity for fan rotation:
• Fan in puller mode: Red (+ Battery) / Black (- / Ground)
• Fan in pusher mode: Red (- / Ground) / Black (+ Battery)
• Fan supplied as a standalone unit; mounting or fixing kit not included.
• See fan dimensions in photo #2

The sets are supplied with the following components:

• Liners (x4)
• Pistons (x4)
• Rings (x12)
• Panels (x4)

Dimensions of the different parts:

• • Liner bore diameter: Ø 76mm
  • Liner flange or top diameter (D): Ø 90.10mm
  • Liner base diameter (A): Ø 80.60mm
  • Overall height including skirts of cylinder liners (C):134mm
  • Height from top of cylinder liner to base gasket surface (E): 95mm
  • Shaft dimensions: Ø 20x62mm (Cirlip-free mounting)
  • Ring thickness:1.75mm / 2mm / 4mm (Fireproof/Sealing/Scraper)
  • Base gasket type: O-ring

Piston mounting direction: an arrow drawn perpendicular to the piston axis on 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.

Dimensions of the Large Spring:

• Outer Diameter: Ø 35.90mm
• Inner Diameter: Ø 27.80mm
• Wire Diameter: Ø 4.1mm
• Free Height (overall): 49.50mm

Dimensions of the Small Spring:

• Outer Diameter: Ø 25.90mm
• Inner Diameter: Ø 20mm
• Wire Diameter: Ø 2.90mm
• Overall height: 42mm

Dimensions provided for information purposes only, may vary slightly.

• Intake pipe : Ø 29mm
• Exhaust pipe : Ø 25mm
• Fixing : holes aligned

AVP recommends the reinforced gearbox side silentblocks Ref 4305, for reasons of reliability and ease of assembly.

• R4 (Billancourt Engine): Alternator belt - Ref 0854249800
• R5 Alpine (1223) / R5 alpine Turbo (122B): Water pump belt