Contact ignition system — specifications

The Bosch or Lucas contact ignition system consists of a battery, an ignition coil, an ignition distributor with an interrupter and spark plugs. Ignition order: 1–3–4–2.

Distributor

brand	Bosch or Lucas
Drive unit	from the camshaft
Direction of rotation of the rotor	counterclockwise when viewed from above
Gap between breaker contacts:
– Bosch	0.4 - 0.5 mm
– Lucas	0.4 - 0.6 mm
Breaker contact closed angle	48 – 52°
Capacitor capacity:
– Lucas	0.21 - 0.29 uF
– Bosch	0.235 - 0.315 uF

Initial ignition timing

Engine code	Fuel	Ignition timing up to TDC (+2°)
		Ethyl. Super	Unleaded
GMA	N		12
GPA	S	12	8
JPA	S	12	8
FUA	S	12	8
FUS	S	12	12
F6B/ F6D	S	–	10
LPA	S	12	8
LUC	S	12	8
LRA/ LRB	S	12	6
L4B	N	–	12
LUA	S	12	8
LUAE	S	12	–
LNA	S	12	–

Ignition coil

brand	Bosch, Femsa, Polmot or Lucas
Primary resistance	1.2 - 1.4 ohm
Secondary winding resistance	5 - 9 kOhm
Voltage on the secondary winding, min	25000 V

Spark plug

Brand and type:
– engines with a displacement of 1.1 and 1.3 dm3	Motorcraft AGRF 22 or Bosch HR6DC
– engines with a displacement of 1.3 dm3 manufactured from 09.1988	Motorcraft AGRF 22C1 or Bosch FR6DCX
Gap between electrodes:
- Motorcraft AGRF spark plugs	22 - 0.75 mm
- Bosch HR6DC spark plugs	0.7 mm
– spark plugs Motorcraft AGRF 22C1	1.0 mm
– candles Bosch FR6DCX	1.1mm