Toyota1974–1979Technical specifications

Corolla 1.2: Technical specifications

Workshop data for the 1.2-litre petrol (engine code 3K/3K-H). Covers engine, fluids, service and torques: the figures to check before a job or a parts order.

Summary

Match the engine code (3K/3K-H) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make: Toyota
Model: Corolla
Years: 1974–1979
Fuel: Petrol
Engine code: 3K/3K-H

Performance & efficiency

Power: 40 kW (54 hp)
Engine size: 1,166 cc
Cylinders: 4 · OHV
Compression ratio: 9.0:1
Fuel system: Aisan

Fluids & capacities

Engine oil (with the filter): 3.5 litres

All 76 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type	4/OHV
Capacity (Fiscal) cc	1166 (1158)
Compression ratio :1	9,0
Suitable for unleaded petrol	Yes
Minimum octane rating RON	91
Ignition system Type	SZ
Ignition system Description	CB
Fuel system Make	Aisan
Fuel system Type	24342/034/044
Fuel system Description	Carb-FJ

Ignition system

Ignition coil Make	Denso
Ignition coil Type	90919
Ballast resistance Ohm	1,3-1,7
Primary resistance Ohm	1,4
Distributor (ECM) Make	Denso
Distributor (ECM) No.	19100/24050
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 (1974–1979) is 1-3-4-2.

Firing order	1-3-4-2

Valve clearances

Valve clearances for the Toyota Corolla 1.2 (1974–1979) 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 (1974–1979) 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

Lubricants and capacities — complete reference
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
Automatic transmission (drain & refill) litres	4.7
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 (1974–1979) is 8° BTDC at 750 rpm.

Ignition timing	Without vacuum
Ignition timing - basic BTDC °Engine/rpm	8/750

Battery

The Toyota Corolla 1.2 (1974–1979) 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 (1974–1979) uses Denso W16EP spark plugs with a 0,7 mm electrode gap.

Spark plugs Original equipment	Denso
Spark plug Type	W16EP
Electrode gap mm	0,7
Spark plugs Make	Champion
Spark plug Type	RN9YCC
Electrode gap mm	0,8
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	10/2000
Ignition advance checks °Engine/rpm	24/3500
Ignition advance checks °Engine/rpm	28/3000
Vacuum check	Ignition timing advances
Vacuum range °Engine	18
Vacuum starts mbar	145
Vacuum ends mbar	345
Idle speed rpm	750
Oil temperature °C	60-80
CO level at idle speed - tailpipe Vol. % CO	1±0,5
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	24030/24012
Maximum cranking amps A	108-132
Alternator Make	Nippon Denso
Alternator output A/V/rpm	45/14/2500
Regulated voltage V	13,8-14,4

Service checks and adjustments

Compression pressure bar	9,0-11,0
Oil pressure bar/rpm	3/3000
Radiator cap bar	0,90
Thermostat opens °C	82
Drive belt size - alternator mm	9,5x850
Drive belt tension - alternator/PAS/AC mm	8-13

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 (1974–1979) is 54-66 Nm.

Cylinder head
Tighten	54-66 Nm

Other engine tightening torques
Cylinder head instructions	—
Main bearings Stage 1	27-33 Nm
Main bearings Stage 2	54-66 Nm
Big end bearings Stage 1	20-21 Nm
Big end bearings Stage 2	40-52 Nm
Flywheel/driveplate	54-66 Nm
Spark plugs	15-21 Nm
Chassis tightening torques
Road wheels	80-110 Nm

Frequently asked questions

What is the firing order of the Toyota Corolla 1.2?

The firing order for the Toyota Corolla 1.2 (1974–1979) is 1-3-4-2.

What spark plugs does the Toyota Corolla 1.2 use?

The Toyota Corolla 1.2 (1974–1979) uses Denso W16EP spark plugs with a 0,7 mm electrode gap.

How much oil does the Toyota Corolla 1.2 take?

The Toyota Corolla 1.2 (1974–1979) 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 (1974–1979) 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 (1974–1979) is 54-66 Nm.

What is the ignition timing for the Toyota Corolla 1.2?

Basic ignition timing for the Toyota Corolla 1.2 (1974–1979) is 8° BTDC at 750 rpm.