1.2N & 1.2S Engine

 

1.2-liter engine is  the most widely available engine in the Opel Kadett C. This engine has 2 versions, namely the1.2 N and 1.2S. By a number changes in specifications the1.2 OHV engine has 5 versions.

Most Kadett C's were provided with the1.2N engine. The1.2S the engine was on the other hand frequently used in the luxury versions of the Kadett C and standard in all Automatic models, as well as in the sporty Coupé SR.

 

1.2motor 

 

As from 1975 the 1.2 engines hadbeen adapted to new emission requirements for exhaust gases.
These engines have a star behind the engine type number, i.e. 1.2N* and 1.2S*.
The 1.2N acquired a 2nd change from engine number 1500 001 this1.2N* had more power and torque. This was released at the same engine speed as before

Although the 1.2S engine was more powerful than the 1.2N it was not by much. Two versions were made with the same power and torque output. The differences in horsepower and torque between N and S engines only amount to 5 - 8 hp and 5 -10 Nm, in reality this translates into a noticeable difference when driving
In contrast to1.2N increase in output during the life of the Kadett C the 1.2S remained the same.

 

In the 2 tables below are the specifications of the 5 versions of this engine.

 

Specifications 1.2N OHV

1.2N

1.2N*

1.2N*

Production

Aug 1973 up to in 1975, termination date unknown

As from 1975
to aug 1976

As from Aug 1976 and
engine no. 1, 500, 001

Maximum power

52 pk (38 kW)
at 5600 tpm

52 pk (38 kW)
at 5400 tpm

55 pk (40 kW)
at 5400 tpm

Maximum Torque

78.5 Nm at 3400 rpm

83.4 Nm at 3400 rpm

Number of cylinders

4 in line

Bore x Stroke

79x61 mm

Cubic Capicity

1196 cc

Compression ratio

7,8:1

petrol type
requires octane number (RON)

Normal
minus 92 RON

Normal
minus 92 RON

Normal
minus 92 RON

fuel system

Solex 30 mm PDSI
down draft carburateur

Solex 35 mm PDSI down draft carburateur

Choke

Manual

Idle speed rpm

850 rpm

Maximum rpm

Briefly maximum. 6100 rpm, constantly maximum. 5800 rpm

crankshaft

3x bearings

camshaft

Operated by means of chain, 3x bearings

Oil capacity

2.75 litre

lighting order

1-3-4-2

 

Specifications 1.2S OHV

1.2S

1.2S*

Production

From august 1973
to start of 1.2S* in 1975,

as from engine number
0 700 001

Maximum power,

60 pk (44 kW) at 5400 rpm

Maximum torque

88.3 Nm at 2600-3400 rpm

Compression ratio

9,2 : 1

9,0 : 1

Number of cylinders

4 in line

Bore x Stroke

79x61 mm

Cubic capacty

1196 cc

petrol type,
requires octane number (RON)

Super
minus 98 RON

Super
minus 98 RON

Choke

Manual

fuel supplies

Solex 35 mm PDSI
down draft carburateur

Idle speed rpm

850 pm

maximum rpm

Briefly maximum. 6100 rpm/constantly maximum 5800 rpm

crankshaft

3x bearings

camshaft

Operated by means of chain, 3x bearings

Oil capacity

2.75 litre

Firing order

1-3-4-2