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The Renault 8G was a family of French liquid-cooled V-8 aero engines of the World War I era that produced from 140 hp (100 kW) to 190 hp (140 kW).

8G
Type	Liquid-cooled V-8 piston engine
National origin	France
Manufacturer	Renault
Major applications	Dorand AR.1,

Design and development

Construction used separate cast iron blocks for each pair of cylinders, mounted on a light-alloy crankcase with an included vee angle of 50 degrees. Each bank had a single overhead camshaft, shaft-driven through bevel gears. It was equipped with a single dual-choke updraught Zenith carburettor, and twin spark ignition through four magnetos. The crankshaft was a flat plane with three bearings and four throws, each pair of cylinders sharing a master-slave connecting rod onto the same crankpin.

Variants

8G

140 hp (100 kW)

8Ga

150 hp (110 kW)

8Gb

160 hp (120 kW)

8Gc

175 hp (130 kW)

8Gd

190 hp (140 kW)

8Gdy

200 hp (150 kW)

8Ge

200 hp (150 kW)

Applications

• Dorand AR.1 - Renault 8Gd - 1917
• Farman F.80 - Renault 8Gd
• Dorand AR.2 - Renault 8Gdy

Specifications (8Gd)

Data from [1]

General characteristics

• Type: 8-cylinder naturally aspirated liquid-cooled 50° "Vee" piston aircraft engine
• Bore: 125 mm (4.9 in)
• Stroke: 150 mm (5.9 in)
• Displacement: 14.7 L (900 in³)

Components

• Valvetrain: Overhead camshaft-actuated, single intake and single exhaust valve per cylinder
• Fuel system: Twin-choke updraught carburettor
• Oil system: Wet sump
• Cooling system: Water

Performance

• Power output:
  
• 192 hp (143 kW) at 1,500 rpm
• 196 hp (146 kW) at 1,550 rpm son régime normal
• 200 hp (150 kW) at 1,600 rpm son régime maximum
• Specific power: 9.93 kW/L (0.22 hp/in³)

See also

Comparable engines

• Hispano-Suiza 8
• Sunbeam Arab

Related lists

• List of aircraft engines

References

External links

• Renault Moteur d'aviation 150 chevaux - Notice descriptive sur le Fonctionnement et l'Entretien. Renault. (Renault 8Ga 150hp)

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