Toyota1978–1983Technical specifications

Corona 1.8: Technical specifications

Workshop data for the 1.8-litre petrol (engine code 3T). Covers engine, fluids, service and torques: the figures to check before a job or a parts order.

Summary

Match the engine code (3T) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make: Toyota
Model: Corona
Years: 1978–1983
Fuel: Petrol
Engine code: 3T

Performance & efficiency

Power: 63 kW (86 hp)
Engine size: 1,770 cc
Cylinders: 4 · OHV
Compression ratio: 9.0:1
Fuel system: Aisan

Fluids & capacities

Engine oil (with the filter): 4.2 litres

All 84 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type	4/OHV
Capacity (Fiscal) cc	1770 (1758)
Compression ratio :1	9,0
Suitable for unleaded petrol	No
Minimum octane rating RON	91
Ignition system Type	SZ
Ignition system Description	CB
Fuel system Make	Aisan
Fuel system Description	Carb-2V

Ignition system

Ignition coil Make	Denso
Ignition coil Type	90919
Ignition coil supply voltage + with ballast V	4,5 +
Ballast resistance Ohm	1,3-1,7
Primary resistance Ohm	1,3-1,5
Secondary resistance Ohm	7200-9800
Distributor (ECM) Make	Denso
Contact breaker gap/trigger air gap mm	0,45
Dwell angle °(%)	50-54 (56-60)

Firing order

The firing order for the Toyota Corona 1.8 (1978–1983) is 1-3-4-2.

Firing order	1-3-4-2

Valve clearances

Valve clearances for the Toyota Corona 1.8 (1978–1983) are 0,20 mm inlet and 0,33 mm exhaust, measured hot.

Valve clearance - INLET mm	0,20 hot
Valve clearance - EXHAUST mm	0,33 hot

Engine oil & fluids

Engine oil

The Toyota Corona 1.8 (1978–1983) takes 4.2 litres of engine oil with the filter.

A listed engine oil option is SAE 10W-30 for moderate climates, with API/ACEA classification SE.

A listed engine oil option is SAE 20W-50 as an alternative for moderate climates.

Manual gearbox

The manual gearbox has a listed capacity of 2.7 litres.

Coolant

The listed total cooling-system capacity is 8.0 litres.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Engine oil options
Ambient temperature range	Moderate climate
Engine oil grade SAE	10W-30
Engine oil classification API/ACEA	SE
Ambient temperature range	Moderate climate alternative
Engine oil grade SAE	20W-50
Engine with filter(s) litres	4.2
Other lubricants and capacities
Manual transmission litres	2.7
Automatic transmission (drain & refill) litres	6.3
Differential rear litres	1.3
Cooling system - total capacity litres	8.0

Service & electrical

Ignition timing

Basic ignition timing for the Toyota Corona 1.8 (1978–1983) is 10° BTDC at 650 rpm.

Ignition timing	Without vacuum
Ignition timing - basic BTDC °Engine/rpm	10/650

Battery

The Toyota Corona 1.8 (1978–1983) uses a 12 V, 60 Ah battery (reserve capacity 95 minutes).

Battery V/RC(Ah)	12/95 (60)

Spark plugs

The Toyota Corona 1.8 (1978–1983) uses NGK BPR5ES spark plugs with a 0,8 mm electrode gap.

Spark plugs Original equipment	NGK
Spark plug Type	BPR5ES
Electrode gap mm	0,8
Spark plugs Make	Bosch
Spark plug Type	W7DTC
Electrode gap mm	0,8
Spark plugs Make	Champion
Spark plug Type	RN11YCC
Electrode gap mm	0,8
Spark plugs Make	NGK
Spark plug Type	BPR5ES
Electrode gap mm	0,8

Tuning and emissions

Ignition advance	Without vacuum and basic timing
Ignition advance checks °Engine/rpm	2-4/1600
Ignition advance checks °Engine/rpm	11-13/2800
Ignition advance checks °Engine/rpm	19-21/5400
Vacuum check	Ignition timing advances
Vacuum range °Engine	13
Vacuum starts mbar	147
Vacuum ends mbar	340
Idle speed rpm	650
Idle speed - alternative rpm	AT=750/N
Fast idle speed - MT/AT rpm	2700
Oil temperature °C	60-80
CO level at idle speed - tailpipe Vol. % CO	1,5-3,5
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	162-198
Alternator Make	Nippon Denso
Alternator output A/V/rpm	50/14/2500
Regulated voltage V	13,8-14,8

Service checks and adjustments

Compression pressure bar	9,0-11,5
Oil pressure bar/rpm	4,0
Radiator cap bar	0,90
Thermostat opens °C	82
Drive belt size - alternator mm	9,5x850
Drive belt tension - alternator/PAS/AC mm	8-12

Fuel system

Fuel pump delivery pressure bar	0,3-0,38

Tightening torques

Cylinder head bolt torque

The cylinder head bolt torque for the Toyota Corona 1.8 (1978–1983) is 85-95 Nm.

Cylinder head
Tighten	85-95 Nm

Other engine tightening torques
Cylinder head instructions	—
Main bearings Stage 1	36-44 Nm
Main bearings Stage 2	72-88 Nm
Big end bearings Stage 1	20-25 Nm
Big end bearings Stage 2	40-50 Nm
Flywheel/driveplate	57-64 Nm
Crankshaft pulley/damper centre bolt	39-58 Nm
Spark plugs	15-21 Nm
Chassis tightening torques
Road wheels	90-120 Nm

Frequently asked questions

What is the firing order of the Toyota Corona 1.8?

The firing order for the Toyota Corona 1.8 (1978–1983) is 1-3-4-2.

What spark plugs does the Toyota Corona 1.8 use?

The Toyota Corona 1.8 (1978–1983) uses NGK BPR5ES spark plugs with a 0,8 mm electrode gap.

How much oil does the Toyota Corona 1.8 take?

The Toyota Corona 1.8 (1978–1983) takes 4.2 litres of engine oil with the filter. A listed engine oil option is SAE 10W-30 for moderate climates, with API/ACEA classification SE. A listed engine oil option is SAE 20W-50 as an alternative for moderate climates.

What are the valve clearances for the Toyota Corona 1.8?

Valve clearances for the Toyota Corona 1.8 (1978–1983) are 0,20 mm inlet and 0,33 mm exhaust, measured hot.

What is the cylinder head torque for the Toyota Corona 1.8?

The cylinder head bolt torque for the Toyota Corona 1.8 (1978–1983) is 85-95 Nm.

What is the ignition timing for the Toyota Corona 1.8?

Basic ignition timing for the Toyota Corona 1.8 (1978–1983) is 10° BTDC at 650 rpm.