Toyota 4S
Toyota 4S-FE/Fi Engine
Toyota 4S engine specs
| Manufacturer | Kamigo Plant |
| Also called | Toyota 4S |
| Production | 1987-1999 |
| Cylinder block alloy | Cast-iron |
| Configuration | Straight-4 |
| Valvetrain | DOHC 4 valves per cylinder |
| Piston stroke, mm (inch) | 86 (3.39) |
| Cylinder bore, mm (inch) | 82.5 (3.25) |
| Compression ratio | 9.3 9.5 |
| Displacement | 1838 cc (112.2 cu in) |
| Power output | 77 kW (105 HP) at 5,600 rpm 85 kW (115 HP) at 5,600 rpm 92 kW (125 HP) at 6,000 rpm |
| Torque output | 149 Nm (110 lb·ft) at 2,800 rpm 157 Nm (116 lb·ft) at 4,400 rpm 162 Nm (119 lb·ft) at 4,600 rpm |
| Redline | – |
| HP per liter | 57.1 65.6 68 |
| Fuel type | Gasoline |
| Weight, kg (lbs) | – |
| Fuel consumption, L/100 km (mpg) -City -Highway -Combined |
for Mark 2 8.2 (28.7) 5.2 (45.2) 6.7 (35.1) |
| Turbocharger | Naturally aspirated |
| Oil consumption , L/1000 km (qt. per miles) |
up to 1.0 (1 qt. per 750 miles) |
| Recommended engine oil | 5W-30 10W-30 |
| Engine oil capacity, L (qt.) | 3.3 (3.5) – Chaser, Cresta, Mark 2 3.9 (4.1) |
| Oil change interval, km (miles) | 5,000-10,000 (3,000-6,000) |
| Normal engine operating temperature, °C (F) | 95 (203) |
| Engine lifespan, km (miles) -Official information -Real |
– 300,000+ (185,000+) |
| Tuning, HP -Max HP -No life span loss |
150+ – |
| The engine is installed in | Toyota Corona Toyota Camry Toyota Carina Toyota Carina E Toyota Caldina Toyota Celica Toyota Vista Toyota Mark II Toyota Chaser Toyota Cresta |
Toyota 4S-FE/Fi engine reliability, problems and repair
In 1987, a new 4S 1.8-liter engine replaced the Toyota 1S. It origins from the 3S cylinder unit, in which the cylinder diameter was diminished to 82.5 mm. The crankshaft remained intact. The engine was also equipped with the different intake and exhaust manifolds.
The 4S engine differs from the 1S. It has a new 16 valve cylinder head. It is similar to that one, which goes with the 3S.
Engine is equipped with timing belt. Replacement of the belt is necessary every 60,000 miles (100,000 km) of mileage. If it is not done, belt break down can result in bended 4S valves.
The S series also includes 3S and 5S.
The production of that engine came to a halt in 1999. That’s why it was replaced with a new 1ZZ-FE engine.
Toyota 4S engine modifications, features and differences
1. 4S-Fi (1987 – 1991) is the first type of the engine with a single point injection. The compression ratio equals 9.3, power is 105 HP at 5,600 rpm, and torque is 149 Nm (110 lb•ft) at 2,800 rpm.
2. 4S-FE Gen 1 (1989 – 1999) is the second type of the engine with a multi point injection. The power of that engine has increased to 115 HP at 5,600 rpm, and its torque is 157 Nm (116 lb•ft) at 4,400 rpm. The engine was mounted in Toyota Corona T170.
3. 4S-FE Gen 2 (1995 – 1999) is the 4S last type of the engine with a compression ratio enlarged to 9.5. The power of the engine is 125 HP at 6,000 rpm with a torque of 162 Nm (119 lb•ft) at 4,600 rpm. The 4S-FE Gen 2 is under the bonnet of Chaser X80 and Vista V30.
Toyota 4S engine problems and malfunctions
The 4S engine failures are similar to those of Toyota 3S. One can find a useful information on advantages and disadvantages of those engines HERE.
To put it in other words, the Toyota 4S engine is simple enough and is common for the 1990-s. Its reliability and nice engine lifespan is one of its biggest advantage. It is a nice means for a comfortable movement from point A to point B.
Toyota 4S engine tuning
4S Chiptuning. N/A
The 4S engine tuning can become quite a difficult and absurd task. If you are burning with desire to intensify the power of your engine, then you should buy a cold air intake, 4-2-1 header and adjust the ECU. The upgrades will help to get 10-15 HP. It is expensive and unreasonably to assemble the 4S-FE Turbo on your own. You had better buy a ready-made 3S-GTE.
