Toyota1976–1981Technical specifications

Crown 2.6 Super: Technical specifications

Workshop data for the 2.6-litre petrol (engine code 4M). Covers engine, fluids, service and torques: the figures to check before a job or a parts order.

Summary

Match the engine code (4M) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make: Toyota
Model: Crown
Years: 1976–1981
Fuel: Petrol
Engine code: 4M

Performance & efficiency

Power: 99 kW (135 hp)
Engine size: 2,563 cc
Cylinders: 6 · OHC
Compression ratio: 8.5:1
Fuel system: Aisan

Fluids & capacities

Engine oil (with the filter): 5.8 litres

All 74 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type	6/OHC
Capacity (Fiscal) cc	2563 (2546)
Compression ratio :1	8,5
Suitable for unleaded petrol	Yes
Minimum octane rating RON	91
Ignition system Type	SZ
Ignition system Description	CB
Fuel system Make	Aisan

Ignition system

Ignition coil Make	Denso
Ignition coil Type	02025
Ballast resistance Ohm	1,3-1,5
Primary resistance Ohm	1,3-1,6
Distributor (ECM) Make	Denso
Distributor (ECM) No.	45110
Contact breaker gap/trigger air gap mm	0,45
Dwell angle °(%)	39-43 (65-72)

Firing order

The firing order for the Toyota Crown 2.6 Super (1976–1981) is 1-5-3-6-2-4.

Firing order	1-5-3-6-2-4

Valve clearances

Valve clearances for the Toyota Crown 2.6 Super (1976–1981) are 0,28 mm inlet and 0,34 mm exhaust, measured hot.

Valve clearance - INLET mm	0,28 hot
Valve clearance - EXHAUST mm	0,34 hot

Engine oil & fluids

Engine oil

The Toyota Crown 2.6 Super (1976–1981) takes 5.8 litres of engine oil with the filter. The specified engine oil grade is SAE 20W-50 for moderate climates, with API/ACEA classification SE.

Manual gearbox

The manual gearbox has a listed capacity of 2.7 litres.

Coolant

The listed total cooling-system capacity is 11.0 litres.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Engine oil options
Ambient temperature range	Moderate climate
Engine oil grade SAE	20W-50
Engine oil classification API/ACEA	SE
Engine with filter(s) litres	5.8
Other lubricants and capacities
Manual transmission litres	2.7
Automatic transmission (drain & refill) litres	7.0
Differential rear litres	1.4
Cooling system - total capacity litres	11.0

Service & electrical

Ignition timing

Basic ignition timing for the Toyota Crown 2.6 Super (1976–1981) is 12° BTDC at 750 rpm.

Ignition timing	Without vacuum
Ignition timing - basic BTDC °Engine/rpm	12/750

Battery

The Toyota Crown 2.6 Super (1976–1981) uses a 12 V, 55 Ah battery (reserve capacity 85 minutes).

Battery V/RC(Ah)	12/85 (55)

Spark plugs

The Toyota Crown 2.6 Super (1976–1981) uses Denso W20EPR spark plugs with a 0,8 mm electrode gap.

Spark plugs Original equipment	Denso
Spark plug Type	W20EPR
Electrode gap mm	0,8
Spark plugs Make	Champion
Spark plug Type	RN9YCC
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	0/1200
Ignition advance checks °Engine/rpm	6/2300
Ignition advance checks °Engine/rpm	11/6000
Vacuum check	Ignition timing advances
Vacuum range °Engine	12-16
Vacuum starts mbar	133
Vacuum ends mbar	293
Idle speed rpm	750
Fast idle speed - MT/AT rpm	2500
Oil temperature °C	60-80
CO level at idle speed - tailpipe Vol. % CO	1,5-2,5
HC level at idle speed ppm	400
HC level at idle - alternative ppm	-1980=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	28100
Maximum cranking amps A	149-182
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	9,0-12,5
Oil pressure bar/rpm	4
Radiator cap bar	0,90
Thermostat opens °C	82
Drive belt size - alternator mm	12,5x900
Drive belt tension - alternator/PAS/AC mm	9-11

Tightening torques

Other engine tightening torques
Cylinder head instructions	—
Main bearings Stage 1	49-50 Nm
Main bearings Stage 2	99-109 Nm
Big end bearings Stage 1	21-24 Nm
Big end bearings Stage 2	42-48 Nm
Flywheel/driveplate	70-80 Nm
Spark plugs	15-20 Nm
Chassis tightening torques
Road wheels	90-120 Nm

Frequently asked questions

What is the firing order of the Toyota Crown 2.6 Super?

The firing order for the Toyota Crown 2.6 Super (1976–1981) is 1-5-3-6-2-4.

What spark plugs does the Toyota Crown 2.6 Super use?

The Toyota Crown 2.6 Super (1976–1981) uses Denso W20EPR spark plugs with a 0,8 mm electrode gap.

How much oil does the Toyota Crown 2.6 Super take?

The Toyota Crown 2.6 Super (1976–1981) takes 5.8 litres of engine oil with the filter. The specified engine oil grade is SAE 20W-50 for moderate climates, with API/ACEA classification SE.

What are the valve clearances for the Toyota Crown 2.6 Super?

Valve clearances for the Toyota Crown 2.6 Super (1976–1981) are 0,28 mm inlet and 0,34 mm exhaust, measured hot.

What is the ignition timing for the Toyota Crown 2.6 Super?

Basic ignition timing for the Toyota Crown 2.6 Super (1976–1981) is 12° BTDC at 750 rpm.

What battery does the Toyota Crown 2.6 Super use?

The Toyota Crown 2.6 Super (1976–1981) uses a 12 V, 55 Ah battery (reserve capacity 85 minutes).