Engine & identification
Vehicle identification
| No. of cylinders Type | 6/OHC |
|---|---|
| Capacity (Fiscal) cc | 2253 |
| Compression ratio :1 | 8,8 |
| Suitable for unleaded petrol | No |
| Minimum octane rating RON | 94 |
| Ignition system Type | SZ |
| Ignition system Description | CB |
| Fuel system Make | Aisan |
| Fuel system Description | Carb-FJ |
Ignition system
| Ignition coil Make | Denso |
|---|---|
| Ignition coil Type | 02024/25/46 |
| Ballast resistance Ohm | 1,3-1,7 |
| Primary resistance Ohm | 1,2-1,5 |
| Distributor (ECM) Make | Denso |
| Distributor (ECM) No. | 45020/21 |
| Contact breaker gap/trigger air gap mm | 0,4-0,5 |
| Dwell angle °(%) | 38-44 (63-73) |
Firing order
The firing order for the Toyota Crown 2.3 (1968–1971) is 1-5-3-6-2-4.
| Firing order | 1-5-3-6-2-4 |
|---|
Valve clearances
Valve clearances for the Toyota Crown 2.3 (1968–1971) are 0,18 mm inlet and 0,25 mm exhaust, measured hot.
| Valve clearance - INLET mm | 0,18 hot |
|---|---|
| Valve clearance - EXHAUST mm | 0,25 hot |
Engine oil & fluids
Engine oil
The Toyota Crown 2.3 (1968–1971) takes 5.2 litres of engine oil with the filter. The specified engine oil grade is SAE 10W-30 for moderate climates, with API/ACEA classification SE.
Manual gearbox
The manual gearbox has a listed capacity of 1.7 litres.
Coolant
The listed total cooling-system capacity is 11.0 litres.
Grades, filling conditions and capacities
| Engine oil options | |
|---|---|
| Ambient temperature range | Moderate climate |
| Engine oil grade SAE | 10W-30 |
| Engine oil classification API/ACEA | SE |
| Engine with filter(s) litres | 5.2 |
| Other lubricants and capacities | |
| Manual transmission litres | 1.7 |
| Automatic transmission (drain & refill) litres | 7.0 |
| Differential rear litres | 1.2 |
| Cooling system - total capacity litres | 11.0 |
Service & electrical
Battery
The Toyota Crown 2.3 (1968–1971) uses a 12 V, 60 Ah battery (reserve capacity 90 minutes).
| Battery V/RC(Ah) | 12/90 (60) |
|---|
Spark plugs
The Toyota Crown 2.3 (1968–1971) uses Denso W16EP spark plugs with a 0,8 mm electrode gap.
| Spark plugs Original equipment | Denso |
|---|---|
| Spark plug Type | W16EP |
| Electrode gap mm | 0,8 |
| Spark plugs Make | Champion |
| Spark plug Type | RN9YCC |
| Electrode gap mm | 0,8 |
Tuning and emissions
| Ignition timing | Without vacuum |
|---|---|
| Ignition advance checks °Engine/rpm | 8-12/1800 |
| Ignition advance checks °Engine/rpm | 18-22/3000 |
| Ignition advance checks °Engine/rpm | 26-30/4000 |
| Vacuum check | Ignition timing advances |
| Vacuum range °Engine | 12-16 |
| Vacuum starts mbar | 100 |
| Vacuum ends mbar | 280 |
| Idle speed rpm | 700 |
| Idle speed - alternative rpm | AT=700/D |
| Oil temperature °C | 60-80 |
| CO level at idle speed - tailpipe Vol. % CO | 1,0-4,0 |
Starting and charging
| Starter motor Make | Denso |
|---|---|
| Starter motor Type | 41020 |
| Maximum cranking amps A | 162-198 |
| Alternator Make | Nippon Denso |
| Regulated voltage V | 13,8-14,8 |
Service checks and adjustments
| Compression pressure bar | 9,0-11,0 |
|---|---|
| Drive belt size - alternator mm | 12,5x925 |
| Drive belt tension - alternator/PAS/AC mm | 9-11/10 |
Fuel system
| Fuel pump delivery pressure bar | 0,30-0,38 |
|---|
Tightening torques
| Cylinder head instructions | — |
|---|---|
| Other engine tightening torques | |
| Main bearings Stage 1 | 49-50 Nm |
| Main bearings Stage 2 | 99-100 Nm |
| Big end bearings Stage 1 | 21-24 Nm |
| Big end bearings Stage 2 | 42-48 Nm |
| Flywheel/driveplate | 57-63 Nm |
Frequently asked questions
What is the firing order of the Toyota Crown 2.3?
The firing order for the Toyota Crown 2.3 (1968–1971) is 1-5-3-6-2-4.
What spark plugs does the Toyota Crown 2.3 use?
The Toyota Crown 2.3 (1968–1971) uses Denso W16EP spark plugs with a 0,8 mm electrode gap.
How much oil does the Toyota Crown 2.3 take?
The Toyota Crown 2.3 (1968–1971) takes 5.2 litres of engine oil with the filter. The specified engine oil grade is SAE 10W-30 for moderate climates, with API/ACEA classification SE.
What are the valve clearances for the Toyota Crown 2.3?
Valve clearances for the Toyota Crown 2.3 (1968–1971) are 0,18 mm inlet and 0,25 mm exhaust, measured hot.
What battery does the Toyota Crown 2.3 use?
The Toyota Crown 2.3 (1968–1971) uses a 12 V, 60 Ah battery (reserve capacity 90 minutes).