Honda1987–1991Technical specifications

Legend Coupe 2.7: Technical specifications

Workshop data for the 2.7-litre petrol (engine code C27A1). Covers engine, fluids, brakes, service, torques and air conditioning: the figures to check before a job or a parts order.

Common faults & fixes

Summary

Match the engine code (C27A1) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make
Honda
Model
Legend Coupe
Years
1987–1991
Fuel
Petrol
Engine code
C27A1

Performance & efficiency

Power
132 kW (179 hp)
Engine size
2,675 cc
Cylinders
6 · OHC
Compression ratio
9.0:1
Fuel system
Honda

Fluids & capacities

Engine oil (with the filter)
4.5 litres
All 120 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type6/OHC
Capacity (Fiscal) cc2675 (2656)
Compression ratio :19,0
Suitable for unleaded petrolYes
Minimum octane rating RON95
Ignition system TypePGM-FI
Ignition system DescriptionMap-i
Trigger locationDistributor/Crankshaft
Fuel system MakeHonda
Fuel system TypePGM-FI
Fuel system DescriptionMFI-s
Air metering TypeMAP
Combined ignition and fuel ECMYes
Diagnostic socketYes

Ignition system

Ignition coil supply voltage + with ballast V12,0
Primary resistance Ohm0,32-0,38
Secondary resistance Ohm9000-13600

Firing order

The firing order for the Honda Legend Coupe 2.7 (1987–1991) is 1-4-2-5-3-6.

Firing order1-4-2-5-3-6

Valve clearances

Valve clearances on the Honda Legend Coupe 2.7 (1987–1991) are hydraulic — they self-adjust, so no manual clearance figure applies.

Valve clearance - INLET mmHydraulic
Valve clearance - EXHAUST mmHydraulic

Engine oil & fluids

Engine oil

The Honda Legend Coupe 2.7 (1987–1991) takes 4.5 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 2.2 litres.

See the reference table for the complete manual gearbox entries and their conditions.

Coolant

The listed total cooling-system capacity is 8.8 litres.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Engine oil options
Ambient temperature range ➞0°C
Engine oil grade SAE 5W-30
Engine oil classification API/ACEA SG/A2
Ambient temperature range -20°C➞35°C
Engine oil grade SAE 10W-30
Engine oil classification API/ACEA SG/A2
Ambient temperature range -20°C➞
Engine oil grade SAE 10W-40
Engine oil classification API/ACEA SG/A2
Ambient temperature range -15°C➞
Engine oil grade SAE 15W-40, 15W-50
Engine oil classification API/ACEA SG/A2
Ambient temperature range -10°C➞
Engine oil grade SAE 20W-40, 20W-50
Engine oil classification API/ACEA SG/A2
Engine with filter(s) litres 4.5
Other lubricants and capacities
Manual transmission oil grade SAE 10W-30, 10W-40
Manual transmission litres 2.2
Automatic transmission fluid Type Dexron II
Automatic transmission (drain & refill) litres 3.2
Cooling system - total capacity litres 8.8

Brakes & wear limits

Brake disc thickness

Brake discs on the Honda Legend Coupe 2.7 (1987–1991) are replaced at a minimum thickness of 19 mm (ventilated) front and 8 mm rear.

Minimum disc thickness for replacement - ventilated Front19 mm
Minimum disc thickness for replacement Rear8 mm

Brake disc and drum dimensions

Disc thickness variation Front0,015 mm
Disc thickness variation Rear0,015 mm
Disc runout Front0,10 mm
Disc runout Rear0,10 mm
Minimum pad thickness Front3 mm
Minimum pad thickness Rear1,6 mm
Parking brake travel No. of notches7-11

Service & electrical

Ignition timing

Basic ignition timing for the Honda Legend Coupe 2.7 (1987–1991) is 15°±2° BTDC at 800 rpm.

Ignition timing
Ignition timing - basic BTDC °Engine/rpm15±2/800

Battery

The Honda Legend Coupe 2.7 (1987–1991) uses a 12 V, 60 Ah battery (reserve capacity 90 minutes).

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

Spark plugs

The Honda Legend Coupe 2.7 (1987–1991) uses NGK BCPR6E-11 Coupe=BCPR6EY-11 spark plugs with a 1,1 mm electrode gap.

Spark plugs Original equipmentNGK
Spark plug TypeBCPR6E-11 Coupe=BCPR6EY-11
Electrode gap mm1,1
Spark plugs MakeAutolite
Spark plug TypeAPP3923
Electrode gap mm1,0
Spark plugs MakeBeru
Spark plug Type14FR-7DUX
Electrode gap mm1,1
Spark plugs MakeBosch
Spark plug TypeFR7DCX
Electrode gap mm1,1
Spark plugs MakeChampion
Spark plug TypeRC9YCC4
Electrode gap mm1,1
Spark plugs MakeNGK
Spark plug TypeBCPR6E-11 Coupe=BCPR6EY-11
Electrode gap mm1,1

Tuning and emissions

Tuning conditions—
View more information—
Ignition timing
Ignition advance checks °Engine/rpmECM Controlled
Idle speed rpm680±50
Oil temperature °C80
CO level at idle speed - tailpipe (Cat) Vol. % CO0,1 Max Not adjustable
HC level at idle speed ppm100
CO2 level at idle speed Vol. % CO214,5-16
O2 level at idle speed Vol. % O20,1-0,5
Increased idle speed for CO test rpm2300-2700
CO content at increased idle speed Vol. %0,3
Lambda at increased idle λ0,97-1,03

Starting and charging

Starter motor MakeND/Mitsuba
Starter motor Type1,6 kW/1,4 kW
Maximum cranking amps A162-198
Alternator MakeNippon Denso
Alternator Type70A
Alternator output A/V/rpm70/13,5/2000
Regulated voltage V13,9-15,1

Service checks and adjustments

Compression pressure bar10,0-12,0
Oil pressure bar/rpm5,0-5,8/3000

Fuel system

System pressure bar2,55-2,85
Crankshaft position (CKP) sensor/engine speed (RPM) sensor Ohm500-1000
Injector Ohm1,5-2,5
Idle air control (IAC) valve/idle speed control (ISC) actuator Ohm8,0-15,0

Tightening torques

Cylinder head bolt torque

The cylinder head bolts on the Honda Legend Coupe 2.7 (1987–1991) are tightened in 2 stages: 40 Nm, then a final 78 Nm.

Cylinder head
Renew boltsNo
Tighten40 Nm
Tighten78 Nm
Cylinder head instructions—
Other engine tightening torques
Main bearings Renew bolts/nutsNo
Main bearings Stage 1—
Main bearings
Big end bearings Renew bolts/nutsNo
Big end bearings Stage 123 Nm
Big end bearings Stage 245 Nm
Oil pump to cylinder block—
Oil pump to cylinder block
Sump bolts1)7 Nm 2)14 Nm
Sump drain bolt45 Nm
Flywheel/driveplate105 Nm/75 Nm
Clutch pressure plate26 Nm
Crankshaft pulley/damper centre bolt115 Nm
Camshaft sprocket/gear32 Nm
Camshaft carrier/cap—
Camshaft carrier bolts
Camshaft/rocker cover15 Nm
Inlet manifold to cylinder head22 Nm
Exhaust manifold to cylinder head34 Nm
Spark plugs22 Nm
Lambda sensor (Oxygen)45 Nm
Chassis tightening torques
Front hub250 Nm
Rear hub250 Nm
Steering track rod end44 Nm
Brake caliper to carrier Front33 Nm
Brake caliper/carrier to hub Front—
Carrier to hub front
Brake caliper to carrier Rear—
Caliper to carrier - rear
Brake caliper/carrier to hub Rear39 Nm
ABS sensor Front22 Nm
ABS sensor Rear—
ABS wheel speed sensor
Road wheels108 Nm

Air conditioning

Air conditioning refrigerant TypeR12
Air conditioning refrigerant quantity grams900±50
Air conditioning oil quantity cm³—

Frequently asked questions

What is the firing order of the Honda Legend Coupe 2.7?

The firing order for the Honda Legend Coupe 2.7 (1987–1991) is 1-4-2-5-3-6.

What spark plugs does the Honda Legend Coupe 2.7 use?

The Honda Legend Coupe 2.7 (1987–1991) uses NGK BCPR6E-11 Coupe=BCPR6EY-11 spark plugs with a 1,1 mm electrode gap.

How much oil does the Honda Legend Coupe 2.7 take?

The Honda Legend Coupe 2.7 (1987–1991) takes 4.5 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 Honda Legend Coupe 2.7?

Valve clearances on the Honda Legend Coupe 2.7 (1987–1991) are hydraulic — they self-adjust, so no manual clearance figure applies.

What is the cylinder head torque for the Honda Legend Coupe 2.7?

The cylinder head bolts on the Honda Legend Coupe 2.7 (1987–1991) are tightened in 2 stages: 40 Nm, then a final 78 Nm.

What is the ignition timing for the Honda Legend Coupe 2.7?

Basic ignition timing for the Honda Legend Coupe 2.7 (1987–1991) is 15°±2° BTDC at 800 rpm.

More on the Legend Coupe