Mazda1998–2005Technical specifications

MX-5 1.6: Technical specifications

Workshop data for the 1.6-litre petrol (engine code B6). Covers engine, fluids, brakes, service, torques and air conditioning: the figures to check before a job or a parts order.

Summary

Match the engine code (B6) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make: Mazda
Model: MX-5
Years: 1998–2005
Fuel: Petrol
Engine code: B6

Performance & efficiency

Power: 81 kW (110 hp)
Engine size: 1,597 cc
Cylinders: 4 · DOHC
Compression ratio: 9.0:1
Fuel system: Mazda

Fluids & capacities

Engine oil (with the filter): 3.5 litres

All 126 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type	4/DOHC
Capacity (Fiscal) cc	1597
Compression ratio :1	9,0
Suitable for unleaded petrol	Yes
Minimum octane rating RON	91
Ignition system Make	Mazda
Ignition system Description	Map-DIS
Trigger location	Cam
Fuel system Make	Mazda
Fuel system Type	EGI
Fuel system Description	MFI-s
Air metering Type	Flow
Combined ignition and fuel ECM	Yes
Diagnostic socket	Yes

Ignition system

Ignition coil Make	Mazda
Ignition coil supply voltage + with ballast V	11,0
Secondary resistance Ohm	8240-12360

Firing order

The firing order for the Mazda MX-5 1.6 (1998–2005) is 1-3-4-2.

Firing order	1-3-4-2

Valve clearances

Valve clearances for the Mazda MX-5 1.6 (1998–2005) are 0,17-0,23 mm inlet and 0,27-0,33 mm exhaust, measured cold.

Valve clearance - INLET mm	0,17-0,23 cold
Valve clearance - EXHAUST mm	0,27-0,33 cold

Engine oil & fluids

Engine oil

The Mazda MX-5 1.6 (1998–2005) takes 3.5 litres of engine oil with the filter.

See the reference table for the complete engine oil entries and their conditions.

Manual gearbox

The manual gearbox has a listed capacity of 2.0 litres. The specified oil is SAE 75W-90.

Coolant

The listed total cooling-system capacity is 6.0 litres.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Engine oil options
Ambient temperature range	➞-20°C
Engine oil grade SAE	5W-20
Engine oil classification API/ACEA	SJ/A2
Ambient temperature range	➞0°C
Engine oil grade SAE	5W-30
Engine oil classification API/ACEA	SJ/A2
Ambient temperature range	-25°C➞30°C
Engine oil grade SAE	10W-30
Engine oil classification API/ACEA	SJ/A2
Ambient temperature range	-25°C➞
Engine oil grade SAE	10W-40, 10W-50
Engine oil classification API/ACEA	SJ/A2
Ambient temperature range	-10°C➞
Engine oil grade SAE	20W-40, 20W-50
Engine oil classification API/ACEA	SJ/A2
Engine with filter(s) litres	3.5
Other lubricants and capacities
Manual transmission oil grade SAE	75W-90
Manual transmission litres	2.0
Automatic transmission fluid Type	ATF M-III
Automatic transmission (drain & refill) litres	6.7
Differential oil grade - rear SAE	90W
Cooling system - total capacity litres	6.0
Brake fluid Type	DOT 3
Power steering fluid Type	Dexron II
Power steering fluid litres	0.8

Brakes & wear limits

Brake disc thickness

Brake discs on the Mazda MX-5 1.6 (1998–2005) are replaced at a minimum thickness of 16 mm (ventilated) front and 7 mm rear.

Minimum disc thickness
Minimum disc thickness for replacement - ventilated Front	16 mm
Minimum disc thickness for replacement Rear	7 mm

Brake disc and drum dimensions

Minimum disc thickness
Disc runout Front	0,10 mm
Disc runout Rear	0,10 mm
Minimum pad thickness Front	1 mm
Minimum pad thickness Rear	1 mm
Parking brake travel No. of notches	7-9

Service & electrical

Battery

The Mazda MX-5 1.6 (1998–2005) uses a 12 V, 32 Ah battery (reserve capacity 44 minutes).

Battery V/RC(Ah)	12/44 (32)

Tuning and emissions

Ignition timing and idle speed
Tuning conditions	—
View more information	—
Ignition timing - basic BTDC °Engine/rpm	10±1/800 Not adjustable
Ignition advance checks °Engine/rpm	ECM Controlled
Idle speed rpm	800±50
Oil temperature °C	60
CO level at idle speed - tailpipe Vol. % CO	0,5 Max Not adjustable
HC level at idle speed ppm	100
CO2 level at idle speed Vol. % CO2	14,5-16
O2 level at idle speed Vol. % O2	0,1-0,5
Increased idle speed for CO test rpm	2500-2800
CO content at increased idle speed Vol. %	0,3
Lambda at increased idle λ	0,97-1,03

Starting and charging

Maximum cranking amps A	86-109
Alternator output A/V/rpm	80/14/3000

Service checks and adjustments

Compression pressure bar	10,4-21,2
Oil pressure bar/rpm	2,9-3,9/3000
Radiator cap bar	0,90-1,20
Thermostat opens °C	89
Drive belt tension - alternator/PAS/AC mm	6,0-7,5/9,0-10,0
Drive belt tension - AC mm	9,0-10,0

Fuel system

System pressure bar	2,7-3,2
Regulated pressure with vacuum bar	2,1-2,6
Engine coolant temperature (ECT) sensor Ohm/°C	560-640/60
Injector Ohm	12,0-16,0

Spark plugs

Spark plugs Original equipment	Denso
Spark plug Type	K16PR-U11
Electrode gap mm	1,0-1,1
Spark plugs Make	Champion
Spark plug Type	RC10YC4
Electrode gap mm	1,0-1,1
Spark plugs Make	NGK
Spark plug Type	BKR5E-11
Electrode gap mm	1,0-1,1

Tightening torques

Cylinder head
Cylinder head instructions	—
Renew bolts	No
Tighten	29±2 Nm
Tighten	59±2 Nm
Tighten	80±1 Nm
Other engine tightening torques
Main bearings Renew bolts/nuts	No
Main bearings Stage 1	28±2 Nm
Main bearings Stage 2	57±2 Nm
Big end bearings Renew bolts/nuts	No
Big end bearings Stage 1	23±2 Nm
Big end bearings Stage 2	52±2 Nm
Oil pump to cylinder block	23±2 Nm
Sump bolts	10 Nm
Sump drain bolt	35±5 Nm
Flywheel/driveplate	100±3 Nm
Clutch pressure plate	22±4 Nm
Crankshaft pulley/damper centre bolt	157-166 Nm
Camshaft sprocket/gear	49-61 Nm
Camshaft carrier/cap	11-14 Nm
Camshaft/rocker cover	5-9 Nm
Inlet manifold to cylinder head	20-25 Nm
Exhaust manifold to cylinder head	40-45 Nm
Spark plugs	15-23 Nm
Lambda sensor (Oxygen)	40±9 Nm
Chassis tightening torques
Front hub	167-216 Nm
Rear hub	216-294 Nm
Steering track rod end	29-44 Nm
Brake caliper to carrier Front	—
Brake caliper to carrier
Brake caliper/carrier to hub Front	59 Nm
Brake caliper to carrier Rear	52 Nm
Brake caliper/carrier to hub Rear	52 Nm
ABS sensor Front	20 Nm
ABS sensor Rear	20 Nm
Road wheels	103±10 Nm

Air conditioning

Refrigerant quantity
No. of AC service connectors	2
Air conditioning restrictor type	Expansion valve
Compressor clutch/magnetic coupling	Yes
Compressor variable displacement solenoid	No
Air conditioning refrigerant Type	R134a
Air conditioning refrigerant quantity grams	—
Air conditioning oil group	PAG
Air conditioning oil Type	Dens Oil 9
Air conditioning oil quantity cm³	150
Air conditioning oil viscosity ISO	100

Frequently asked questions

What is the firing order of the Mazda MX-5 1.6?

The firing order for the Mazda MX-5 1.6 (1998–2005) is 1-3-4-2.

How much oil does the Mazda MX-5 1.6 take?

The Mazda MX-5 1.6 (1998–2005) takes 3.5 litres of engine oil with the filter. See the reference table for the complete engine oil entries and their conditions.

What are the valve clearances for the Mazda MX-5 1.6?

Valve clearances for the Mazda MX-5 1.6 (1998–2005) are 0,17-0,23 mm inlet and 0,27-0,33 mm exhaust, measured cold.

What is the minimum brake disc thickness for the Mazda MX-5 1.6?

Brake discs on the Mazda MX-5 1.6 (1998–2005) are replaced at a minimum thickness of 16 mm (ventilated) front and 7 mm rear.

What battery does the Mazda MX-5 1.6 use?

The Mazda MX-5 1.6 (1998–2005) uses a 12 V, 32 Ah battery (reserve capacity 44 minutes).