Engine & identification
Vehicle identification
| No. of cylinders Type | 4/OHV |
|---|---|
| Capacity (Fiscal) cc | 1116 (1158) |
| Compression ratio :1 | 8,5 |
| Suitable for unleaded petrol | No |
| Minimum octane rating RON | 98 |
| Ignition system Type | SZ |
| Ignition system Description | CB |
| Fuel system Make | Aisan |
| Fuel system Description | Carb-FJ |
Ignition system
| Ignition coil Make | Denso |
|---|---|
| Ignition coil Type | 02055/02058 |
| Ballast resistance Ohm | 1,3-1,7 |
| Primary resistance Ohm | 1,4 |
| Distributor (ECM) Make | Denso |
| Distributor (ECM) No. | 24013 |
| Contact breaker gap/trigger air gap mm | 0,4-0,5 |
| Dwell angle °(%) | 50-54 (56-60) |
Firing order
The firing order for the Toyota Corolla 1.2 (1974–1978) is 1-3-4-2.
| Firing order | 1-3-4-2 |
|---|
Valve clearances
Valve clearances for the Toyota Corolla 1.2 (1974–1978) are 0,20 mm inlet and 0,30 mm exhaust, measured hot.
| Valve clearance - INLET mm | 0,20 hot |
|---|---|
| Valve clearance - EXHAUST mm | 0,30 hot |
Engine oil & fluids
Engine oil
The Toyota Corolla 1.2 (1974–1978) takes 3.5 litres of engine oil with the filter. The specified engine oil grade is SAE 15W-40 for moderate climates, with API/ACEA classification SF.
Manual gearbox
The manual gearbox has a listed capacity of 1.5 litres.
Coolant
The listed total cooling-system capacity is 4.5 litres.
Grades, filling conditions and capacities
| Engine oil options | |
|---|---|
| Ambient temperature range | Moderate climate |
| Engine oil grade SAE | 15W-40 |
| Engine oil classification API/ACEA | SF |
| Engine with filter(s) litres | 3.5 |
| Other lubricants and capacities | |
| Manual transmission litres | 1.5 |
| Differential rear litres | 1.0 |
| Cooling system - total capacity litres | 4.5 |
Service & electrical
Ignition timing
Basic ignition timing for the Toyota Corolla 1.2 (1974–1978) is 5° BTDC at 750 rpm.
| Ignition timing | Without vacuum |
|---|---|
| Ignition timing - basic BTDC °Engine/rpm | 5/750 |
Battery
The Toyota Corolla 1.2 (1974–1978) uses a 12 V, 40 Ah battery (reserve capacity 60 minutes).
| Battery V/RC(Ah) | 12/60 (40) |
|---|
Spark plugs
The Toyota Corolla 1.2 (1974–1978) uses Bosch WR8DC spark plugs with a 0,7 mm electrode gap.
| Spark plugs Original equipment | Bosch |
|---|---|
| Spark plug Type | WR8DC |
| Electrode gap mm | 0,7 |
| Spark plugs Make | Bosch |
| Spark plug Type | WR8DC |
| Electrode gap mm | 0,7 |
| Spark plugs Make | Champion |
| Spark plug Type | RN9YCC |
| Electrode gap mm | 0,7 |
| Spark plugs Make | NGK |
| Spark plug Type | BPR5EAL |
| Electrode gap mm | 0,8 |
Tuning and emissions
| Ignition advance | Without vacuum and basic timing |
|---|---|
| Ignition advance checks °Engine/rpm | 6/2000 |
| Ignition advance checks °Engine/rpm | 18/3200 |
| Ignition advance checks °Engine/rpm | 28/4200 |
| Vacuum check | Ignition timing advances |
| Vacuum range °Engine | 18 |
| Vacuum starts mbar | 147 |
| Vacuum ends mbar | 346 |
| Idle speed rpm | 750 |
| Oil temperature °C | 60-80 |
| CO level at idle speed - tailpipe Vol. % CO | 1,5-2,5 |
| HC level at idle speed ppm | 500 |
| CO2 level at idle speed Vol. % CO2 | 13-16 |
| O2 level at idle speed Vol. % O2 | 0,5-2,0 |
Starting and charging
| Starter motor Make | Denso |
|---|---|
| Starter motor Type | 24022 |
| Maximum cranking amps A | 108-132 |
| Alternator Make | Nippon Denso |
| Alternator output A/V/rpm | 45/14/2500 |
| Regulated voltage V | 13,8-14,8 |
Service checks and adjustments
| Compression pressure bar | 8,5-10,5 |
|---|---|
| Drive belt size - alternator mm | 12,5x850 |
| Drive belt tension - alternator/PAS/AC mm | 8-13/10 |
Fuel system
| Fuel pump delivery pressure bar | 0,2-0,3 |
|---|
Tightening torques
Cylinder head bolt torque
The cylinder head bolt torque for the Toyota Corolla 1.2 (1974–1978) is 54-66 Nm.
| Cylinder head | |
|---|---|
| Tighten | 54-66 Nm |
| Cylinder head instructions | — |
|---|
Frequently asked questions
What is the firing order of the Toyota Corolla 1.2?
The firing order for the Toyota Corolla 1.2 (1974–1978) is 1-3-4-2.
What spark plugs does the Toyota Corolla 1.2 use?
The Toyota Corolla 1.2 (1974–1978) uses Bosch WR8DC spark plugs with a 0,7 mm electrode gap.
How much oil does the Toyota Corolla 1.2 take?
The Toyota Corolla 1.2 (1974–1978) takes 3.5 litres of engine oil with the filter. The specified engine oil grade is SAE 15W-40 for moderate climates, with API/ACEA classification SF.
What are the valve clearances for the Toyota Corolla 1.2?
Valve clearances for the Toyota Corolla 1.2 (1974–1978) are 0,20 mm inlet and 0,30 mm exhaust, measured hot.
What is the cylinder head torque for the Toyota Corolla 1.2?
The cylinder head bolt torque for the Toyota Corolla 1.2 (1974–1978) is 54-66 Nm.
What is the ignition timing for the Toyota Corolla 1.2?
Basic ignition timing for the Toyota Corolla 1.2 (1974–1978) is 5° BTDC at 750 rpm.