Exhaust valves - Ø 25x7x74mm
Suitable for engines:
- Engine Type 670-01 / 670-05: Dauphine Gordini (R1093 / R1094 / R 1095) / Estafette / Floride (R1092) / A106 / A108
- Engine Billancourt Type 680-... and 800-...: R4 / 4L / R5
Valve with low keyway
Valve sold individually
Suitable for vehicles:
- 4CV / Juvaquatre: Type 662 Engine (From June 1956)
- Dauphine / Dauphinoise / Estafette / Floride A106 / A108: Type 670 Engine
- R4: Billancourt Type 800-02/05 Engine (From 1962)
Bearing Dimensions:
- Dimensions: Original (Standard) Dimensions
- Crankpin Diameter (A): Ø 38.00mm
- Housing Diameter (B): Ø 41.14mm
- Bearing Width (C): 21.18mm
- Bearing Thickness (D): 1.57mm
- Smooth, lug-type bearings with no grease holes or grooves
- Bearing Material: Bimetal
- Delivery in France only
- Anti-corrosion paint for engine block, crankcase, brake drum, and gearbox.
- Resistant to 180°C
- Capacity: 500ml
- Color: RAL 9006 Aluminum Gray
- Applicable directly with a brush or spray gun by diluting the paint with thinner reference C024.
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The sets are supplied with the following components:
- Liners (x4)
- Pistons (x4)
- Rings (x12)
- Panels (x4)
Dimensions of the various parts:
- Liner bore diameter: Ø 55.8mm
- Liner flange or top diameter (D): Ø 69.80mm
- Liner base diameter (A): Ø 62.50mm
- Overall height including skirts of cylinder liners (C):124mm
- Height from top of cylinder liner to base gasket surface (E): 112.80mm
- Shaft dimensions: Ø 16x46mm (Cirlip-free mounting)
- Ring thickness:1.75mm / 2mm / 3.5mm (Fireproof/Sealing/Scraper)
- Base gasket type: Copper gasket
Piston mounting direction: an arrow drawn perpendicular to the piston axis The figure is located 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 specified by the manufacturer or given 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 55.8mm
- Thickness of Upper Segments (Fire-resistant):1.75mm
- Thickness of Intermediate Segments (Waterproof): 2mm
- Low ring thickness (Scraper): 3.5mm
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 supplied instructions.or the values provided in the instruction manual.
During installation, the ring end gap must be evenly distributed around the piston circumference at 120°.