GENERAL
| Type designation - Naturally aspirated (N/A) | 4EX1-M |
| Type designation - Turbocharged | 4EX1-MT |
| Engine number location | see introductory pages |
| Number of cylinders | 4 |
| Capacity | 1588 cm (96.9 in) |
| Bore | 80.00 mm (3.145 in) |
| Stroke | 79.00 mm (3.110 in) |
| Compression ratio - N/A | 9.8:1 |
| Compression ratio - Turbo | 8.5:1 |
| Compression pressure @ 300 rpm - N/A | 12.6 bar (185 lb/in2) |
| Compression pressure @ 300 rpm - Turbo | 11.5 bar (169 lb/in2) |
| Maximum boost pressure (Turbo) | 0.65 bar (9.6 lb/in2) |
| Firing Order | 1,3,4,2 |
| Idle speed - N/A | 900 rpm (electronically controlled) |
| Idle speed - Turbo | 950 rpm (electronically controlled) |
| Maximum permitted engine speed - N/A | 7,700 rpm |
| Maximum permitted engine speed - Turbo | 7,200 rpm |
| Belt tension (cold) - toothed timing belt, new | 7 - 8.5 mm (one way deflection with firm finger pressure) |
| Belt tension (cold) - toothed timing belt, used | 9 - 10.5 mm (one way deflection with firm finger pressure) |
| Belt tension (cold) - alternator | 41 ± 9 kg (90 ± 20 lb) using Burroughs gauge |
| Belt tension (cold) - a/c compressor/PAS | 65 ± 7 kg (145 ± 15 lb) using Burroughs gauge |
| Fuel injection type | Electronic multi-point |
| Injection timing - N.A. | Simultaneous double fire |
| Injection timing - Turbo | Semi-sequential double fire |
| Valve timing - N/A | Intake opens 7 degrees BTDC |
| Valve timing - N/A | Intake closes 57 degrees ABDC |
| Valve timing - N/A | Exhaust opens 58 degrees BBDC |
| Valve timing - N/A | Exhaust closes 6 degrees ATDC |
| Valve timing - Turbo | Intake opens 12 degrees BTDC |
| Valve timing - Turbo | Intake closes 46 degrees ABDC |
| Valve timing - Turbo | Exhaust opens 60 degrees BBDC |
| Valve timing - Turbo | Exhaust closes 6 degrees ATDC |
| Turbocharger (Turbo) | IHI model RHB52TW |
| Sparkplugs - type - N/A | NGK BKR6E-11 or ND K20PR-U11 |
| Sparkplugs - type - Turbo recommended | NGK BKR6E or ND K20PR-U |
| Sparkplugs - type - Turbo alternative | NGK BKR7E-11 or ND K22PR-U11 |
| Sparkplug gap - suffix '11' or 'U11' | 1.1 mm (0.043 in) |
| Sparkplug gap - others | 0.8 mm (0.031 in) |
| Minimum oil pressure | 0.35 bar @ warm idle |
| Max power (DIN 70020) - N/A | 97 kW (130 bhp) @ 7,200 rpm |
| Max power (DIN 70020) - Turbo | 123 kW (165 bhp) @6,600 rpm |
| Max Torque (DIN 70020) - N/A | 142 Nm (105 lbf.ft) @ 4,200 rpm |
| Max Torque (DIN 70020) - Turbo | 200 Nm (148 lbf.ft) @ 4,200 rpm |