Opel OHV engine

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Opel OHV engine
1963 10N engine
Overview
Manufacturer	General Motors
Also called	Kadett engine
Production	1962-1993
Layout
Configuration	Naturally aspirated Inline-four engine
Displacement	993 cc (60.6 cu in) 1,078 cc (65.8 cu in) 1,196 cc (73.0 cu in)
Cylinder bore	72 mm (2.8 in) 75 mm (3.0 in) 79 mm (3.1 in)
Piston stroke	61 mm (2.4 in)
Valvetrain	OHV
Combustion
Fuel type	Gasoline
Oil system	Wet sump
Cooling system	Water-cooled
Output
Power output	29–44 kW (40–60 PS)
Chronology
Successor	Family 1

The Opel OHV family (also known as the Kadett engine after its most famous application) is a pushrod inline-four engine. It was the first all-new engine developed by Opel of Germany after World War II and was released in 1962. Versions were in use through 1993.

1.0[]

The first version of the engine was the 1.0 and placed in the Kadett A which was produced from 1962 to 1965. Displacement was 993 cc (61 cu in) with a 72 mm × 61 mm (2.83 in × 2.40 in) bore and stroke. The Kadett A had two different versions of the engine, namely 10N (normal compression) with 29 kW (40 PS) and 10S (super compression) with 35 kW (48 PS).

This engine was retired in 1965 in favor of the 1.1 but was revived in 1973 as an economy option for the Kadett C. It was briefly discontinued in 1981 but revived a second time a year later for use in the Corsa A where it produced 33 kW (45 PS). It was also used in export market models of the Opel Kadett D.

Applications:

• 1962-1965 Opel Kadett A
• 1973-1979 Opel Kadett C
• 1979-August 1981 Opel Kadett D
• September 1982-1993 Opel Corsa A / Vauxhall Nova

1.1[]

Right-hand side view of a 1967 11S engine (US-spec)

In 1965, the engine was enlarged for use in the all new Kadett B. Displacement was 1,078 cc (66 cu in) with a bore enlarged to 75 mm (3.0 in) stroke remained at 61 mm (2.4 in). The 11N (normal compression) produced 33 kW (45 PS) and 37 kW (50 PS) after 1971. The 11S produced 40 kW (55 PS); in 1966 a special power version was introduced, the 11SR with 44 kW (60 PS).

Applications:

• 1965-1973 Opel Kadett B
• 1967-1970 Opel Olympia A
• 1968-1970 Opel GT 1100

1.2[]

In 1971, a second enlargement made the 1.2 with a displacement of 1,196 cc (73.0 cu in). Bore was enlarged to 79 mm (3.1 in) and stroke was still at 61 mm (2.4 in). Performance of the 12N varied from 37–40 kW (50–55 PS); the 12S consistently had 44 kW (60 PS).

Applications:

• 1971-1973 Opel Kadett B
• 1973-1979 Opel Kadett C
• 1979-1984 Opel Kadett D / Chevrolet Kadett (ZA) / Vauxhall Astra Mk 1
• 1984-1988 Opel Kadett E / Vauxhall Astra Mk 2
• March 1972-1975 Opel Ascona A
• 1975-1980 Opel Ascona B / Vauxhall Cavalier Mk 1
• 1972-1975 Opel Manta A
• 1975-1979 Opel Manta B
• 1982-1993 Opel Corsa A / Vauxhall Nova (with catalyst and 33 kW (45 PS))

References[]

• "Das große Kadett-Buch", Edition Heel, Königswinter, Germany
• Oswald, "Deutsche Pkw 1945-1990, Band 3: Ford, Opel, VW" Motorbuch-Verlag, Germany
• Oswald, Werner. Deutsche Autos 1945-1975. ISBN 3-87943-391-7.