Spark plug well gasket cup - 1400cc engine

4L: R1128 / R2370 / R2430 from 1976 to 1982

4L: R1128 / R112C / R210B / R239B / R2370 / S128 after 1983

R5

Flexor Specifications:

• • Mounting hole spacing:4 x 50.50 mm
  • Mounting hole diameter: Ø 8.4 mm
  • Center hole diameter:Ø 10.50 mm
  • Flexor thickness: 11 mm
  • Material:Rubber flexor with metal reinforcement
  • Supplied with 4 x M8 x 20 mm screws and 4 x nylock nuts

For some assemblies with a center screw, replacing this screw with a socket head cap screw (SHCS) or modifying the flexor may be necessary.

The sets are supplied with the following components:

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

Dimensions of the various 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 seal area (E): 95mm
  • Shaft dimensions: Ø 20x65mm (Cirlip-free mounting)
  • Ring thickness: 1.75mm / 2mm / 4mm (Fireproof/Sealing/Scraper)
  • Base seal type: Paper gasket

Piston mounting direction: one arrow drawn perpendicular to the axis of the piston, figure 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°.

Can be used with:

- the AVP4723 thermistor

- a thermal contact AVP4724 or AVP1744

Brass scabbard that replaces the original plastic one.