Toyota1981–1985Technical specifications

Celica Supra 2.8: Technical specifications

Workshop data for the 2.8-litre petrol (engine code 5M-GE). Covers engine, fluids, service and torques: the figures to check before a job or a parts order.

Summary

Match the engine code (5M-GE) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make: Toyota
Model: Celica Supra
Years: 1981–1985
Fuel: Petrol
Engine code: 5M-GE

Performance & efficiency

Power: 125 kW (170 hp)
Engine size: 2,759 cc
Cylinders: 6 · DOHC
Compression ratio: 9.2:1
Fuel system: Toyota

Fluids & capacities

Engine oil (with the filter): 5.1 litres

All 87 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type	6/DOHC
Capacity (Fiscal) cc	2759 (2740)
Compression ratio :1	9,2
Suitable for unleaded petrol	Yes
Minimum octane rating RON	98/95
Ignition system Type	TSZ-i
Ignition system Description	Trans-i
Fuel system Make	Toyota
Fuel system Type	EFI
Fuel system Description	MFI-i

Ignition system

Ignition coil Make	Nippon Denso
Ignition coil supply voltage + with ballast V	10,0
Primary resistance Ohm	0,5-0,7
Secondary resistance Ohm	11000-16000
Distributor (ECM) Make	Denso
Distributor (ECM) No.	43100
Contact breaker gap/trigger air gap mm	0,2-0,4

Firing order

The firing order for the Toyota Celica Supra 2.8 (1981–1985) is 1-5-3-6-2-4.

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

Valve clearances

Valve clearances on the Toyota Celica Supra 2.8 (1981–1985) are hydraulic — they self-adjust, so no manual clearance figure applies.

Valve clearance - INLET mm	Hydraulic
Valve clearance - EXHAUST mm	Hydraulic

Engine oil & fluids

Engine oil

The Toyota Celica Supra 2.8 (1981–1985) takes 5.1 litres of engine oil with the filter.

A listed engine oil option is SAE 10W-40 for moderate climates, with API/ACEA classification SG.

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 2.5 litres. The specified oil is SAE 80W-90.

Coolant

The listed total cooling-system capacity is 8.3 litres.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Engine oil options
Ambient temperature range	Moderate climate
Engine oil grade SAE	10W-40
Engine oil classification API/ACEA	SG
Ambient temperature range	Moderate climate alternative
Engine oil grade SAE	20W-50
Engine with filter(s) litres	5.1
Other lubricants and capacities
Manual transmission oil grade SAE	80W-90
Manual transmission litres	2.5
Automatic transmission fluid Type	ATF-F
Automatic transmission (drain & refill) litres	2.4
Differential oil grade - rear SAE	90W
Differential rear litres	1.3
Cooling system - total capacity litres	8.3

Service & electrical

Battery

The Toyota Celica Supra 2.8 (1981–1985) uses a 12 V, 60 Ah battery (reserve capacity 90 minutes).

Battery V/RC(Ah)	12/90 (60)

Spark plugs

The Toyota Celica Supra 2.8 (1981–1985) uses NGK BPR6EY spark plugs with a 0,8 mm electrode gap.

Spark plugs Original equipment	NGK
Spark plug Type	BPR6EY
Electrode gap mm	0,8
Spark plugs Make	Bosch
Spark plug Type	WR7DC
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	BPR6EY
Electrode gap mm	0,8

Tuning and emissions

Ignition timing	Without vacuum
Ignition timing - basic BTDC °Engine/rpm	10/800 -08.83=7 1995=8
Ignition timing - alternative °Engine/rpm	95=8 -8.83=6
Ignition advance	Without vacuum and basic timing
Ignition advance checks °Engine/rpm	0-3/1200
Ignition advance checks °Engine/rpm	17-20/3200
Ignition advance checks °Engine/rpm	19-22/5000
Vacuum check	Ignition timing advances
Vacuum range °Engine	4-11
Vacuum starts mbar	80
Vacuum ends mbar	360
Idle speed rpm	800±50
Oil temperature °C	60-80
CO level at idle speed - tailpipe Vol. % CO	2,0±0,5
HC level at idle speed ppm	300
HC level at idle - alternative ppm	-1982=400
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
Maximum cranking amps A	162-198
Alternator Make	Nippon Denso
Alternator output A/V/rpm	30/14/2000
Regulated voltage V	13,8-14,4

Service checks and adjustments

Compression pressure bar	11,5
Oil pressure bar/rpm	2,5-5,0/3000
Radiator cap bar	0,75-1,05
Thermostat opens °C	86-90
Drive belt size - alternator mm	7PKx920

Fuel system

System pressure bar	2,5-2,7
Regulated pressure with vacuum bar	2,0

Tightening torques

Cylinder head bolt torque

The cylinder head bolts on the Toyota Celica Supra 2.8 (1981–1985) are tightened in 3 stages: 35-40 Nm, then 55-60 Nm, then a final 70-80 Nm.

Cylinder head
Tighten	35-40 Nm
Tighten	55-60 Nm
Tighten	70-80 Nm

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	77/77 Nm
Crankshaft pulley/damper centre bolt	132-161 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 Celica Supra 2.8?

The firing order for the Toyota Celica Supra 2.8 (1981–1985) is 1-5-3-6-2-4.

What spark plugs does the Toyota Celica Supra 2.8 use?

The Toyota Celica Supra 2.8 (1981–1985) uses NGK BPR6EY spark plugs with a 0,8 mm electrode gap.

How much oil does the Toyota Celica Supra 2.8 take?

The Toyota Celica Supra 2.8 (1981–1985) takes 5.1 litres of engine oil with the filter. A listed engine oil option is SAE 10W-40 for moderate climates, with API/ACEA classification SG. A listed engine oil option is SAE 20W-50 as an alternative for moderate climates.

What are the valve clearances for the Toyota Celica Supra 2.8?

Valve clearances on the Toyota Celica Supra 2.8 (1981–1985) are hydraulic — they self-adjust, so no manual clearance figure applies.

What is the cylinder head torque for the Toyota Celica Supra 2.8?

The cylinder head bolts on the Toyota Celica Supra 2.8 (1981–1985) are tightened in 3 stages: 35-40 Nm, then 55-60 Nm, then a final 70-80 Nm.

What battery does the Toyota Celica Supra 2.8 use?

The Toyota Celica Supra 2.8 (1981–1985) uses a 12 V, 60 Ah battery (reserve capacity 90 minutes).