Mazda1979–1981Technical specifications

323 1.4: Technical specifications

Workshop data for the 1.4-litre petrol (engine code UC1400). Covers engine, fluids, service and torques: the figures to check before a job or a parts order.

Summary

Match the engine code (UC1400) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make
Mazda
Model
323
Years
1979–1981
Fuel
Petrol
Engine code
UC1400

Performance & efficiency

Power
51 kW (69 hp)
Engine size
1,415 cc
Cylinders
4 · OHC
Compression ratio
9.0:1
Fuel system
Carb-FJ

Fluids & capacities

Engine oil (with the filter)
3.0 litres
All 74 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type4/OHC
Capacity (Fiscal) cc1415 (1405)
Compression ratio :19,0
Suitable for unleaded petrolNo
Minimum octane rating RON91
Ignition system TypeSZ
Ignition system DescriptionCB
Fuel system DescriptionCarb-FJ

Ignition system

Ballast resistance Ohm1,5
Primary resistance Ohm1,6
Distributor (ECM) MakeMitsubishi
Contact breaker gap/trigger air gap mm0,5
Dwell angle °(%)49-55 (54-61)

Firing order

The firing order for the Mazda 323 1.4 (1979–1981) is 1-3-4-2.

Firing order1-3-4-2

Valve clearances

Valve clearances for the Mazda 323 1.4 (1979–1981) are 0,25 mm inlet and 0,30 mm exhaust, measured hot.

Valve clearance - INLET mm0,25 hot
Valve clearance - EXHAUST mm0,30 hot

Engine oil & fluids

Engine oil

The Mazda 323 1.4 (1979–1981) takes 3.0 litres of engine oil with the filter. The specified engine oil grade is SAE 10W-40 for moderate climates, with API/ACEA classification SG.

Manual gearbox

The manual gearbox has a listed capacity of 1.3 litres.

Coolant

The listed total cooling-system capacity is 5.5 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
Engine with filter(s) litres 3.0
Other lubricants and capacities
Manual transmission litres 1.3
Automatic transmission (drain & refill) litres 5.5
Differential rear litres 1.0
Cooling system - total capacity litres 5.5

Service & electrical

Ignition timing

Basic ignition timing for the Mazda 323 1.4 (1979–1981) is 11°±1° BTDC at 600 rpm.

Ignition timingWithout vacuum
Ignition timing - basic BTDC °Engine/rpm11±1/600

Battery

The Mazda 323 1.4 (1979–1981) uses a 12 V, 33 Ah battery (reserve capacity 55 minutes).

Battery V/RC(Ah)12/55 (33)

Spark plugs

The Mazda 323 1.4 (1979–1981) uses NGK BPR6ES spark plugs with a 0,8 mm electrode gap.

Spark plugs Original equipmentNGK
Spark plug TypeBPR6ES
Electrode gap mm0,8
Spark plugs MakeBosch
Spark plug TypeWR8DC
Electrode gap mm0,8
Spark plugs MakeChampion
Spark plug TypeRN11YCC
Electrode gap mm0,8
Spark plugs MakeNGK
Spark plug TypeBPR6ES
Electrode gap mm0,8

Tuning and emissions

Ignition advanceWithout vacuum and basic timing
Ignition advance checks °Engine/rpm0/600
Ignition advance checks °Engine/rpm10/2250
Vacuum checkIgnition timing advances
Vacuum range °Engine10-12
Vacuum starts mbar160
Vacuum ends mbar480
Idle speed rpm600-650
Oil temperature °C60
CO level at idle speed - tailpipe Vol. % CO1,5-2,5
HC level at idle speed ppm500
CO2 level at idle speed Vol. % CO213-16
O2 level at idle speed Vol. % O20,5-2,0

Starting and charging

Starter motor MakeMitsubishi
Starter motor Type0,8 kW
Minimum starting voltage V11,5
Maximum cranking amps A95-116
Alternator MakeMitsubishi
Alternator output A/V/rpm45/14,5/2500
Regulated voltage V14,0-15,0

Service checks and adjustments

Compression pressure bar10,0-11,0
Oil pressure bar/rpm3,5-4,5
Radiator cap bar0,90
Thermostat opens °C80-95
Drive belt size - alternator mm9,5x785
Drive belt tension - alternator/PAS/AC mm11-13

Fuel system

Fuel pump delivery pressure bar0,2-0,27

Tightening torques

Cylinder head bolt torque

The cylinder head bolt torque for the Mazda 323 1.4 (1979–1981) is 70-75 Nm.

Cylinder head
Tighten70-75 Nm
Cylinder head instructions—
Other engine tightening torques
Main bearings Stage 130-32 Nm
Main bearings Stage 260-65 Nm
Big end bearings Stage 115-17 Nm
Big end bearings Stage 230-35 Nm
Flywheel/driveplate80-90 Nm
Spark plugs15-21 Nm
Chassis tightening torques
Road wheels90 Nm

Frequently asked questions

What is the firing order of the Mazda 323 1.4?

The firing order for the Mazda 323 1.4 (1979–1981) is 1-3-4-2.

What spark plugs does the Mazda 323 1.4 use?

The Mazda 323 1.4 (1979–1981) uses NGK BPR6ES spark plugs with a 0,8 mm electrode gap.

How much oil does the Mazda 323 1.4 take?

The Mazda 323 1.4 (1979–1981) takes 3.0 litres of engine oil with the filter. The specified engine oil grade is SAE 10W-40 for moderate climates, with API/ACEA classification SG.

What are the valve clearances for the Mazda 323 1.4?

Valve clearances for the Mazda 323 1.4 (1979–1981) are 0,25 mm inlet and 0,30 mm exhaust, measured hot.

What is the cylinder head torque for the Mazda 323 1.4?

The cylinder head bolt torque for the Mazda 323 1.4 (1979–1981) is 70-75 Nm.

What is the ignition timing for the Mazda 323 1.4?

Basic ignition timing for the Mazda 323 1.4 (1979–1981) is 11°±1° BTDC at 600 rpm.

More on the 323