An improvement over the SR18Di, the Nissan SR18DE engine (also known as SR18) debuted in 1992 and used multipoint fuel injection rather than single injection. It is noteworthy that the engines of the Sunny GTI and Nissan Pulsar have a compression ratio of 10 units and a high power of 140 horsepower at 6400 rpm. The older “brother” SR20DE and the SR18DE are nearly structurally identical. SR18DE engines have a single-circuit ignition system, hydraulic lifters (the engine does not need to adjust the valves), and a chain-driven gas distribution mechanism.
Internal combustion engines SR16VE, SR20DE, SR20DET, SR20VE, and SR20VET are also members of the SR family.
The engine was mounted on:
- Nissan Avenir 1 (W10) in 1993 – 2002;
- Nissan Bluebird U13 in 1991 – 1997;
- Nissan Bluebird U14 in 1996 – 2001;
- Nissan Presea 1 (R10) in 1990 – 1995;
- Nissan Presea 2 (R11) in 1995 – 2000;
- Nissan Primera 1 (P10) in 1990 – 1996;
- Nissan Pulsar N14 in 1990 – 1995;
- Nissan Pulsar N15 in 1995 – 2000;
- Nissan Sunny 4 (B14) in 1993 – 1998;
- Nissan Sunny 5 (B15) in 1998 – 2002.
Specifications
| Manufacturer | Yokohama plant |
| Also called | SR18 |
| Production years | 1989-2001 |
| Cylinder block alloy | aluminum |
| Fuel system | distributed injection |
| Configuration | inline |
| Number of cylinders | 4 |
| Valves per cylinder | 4 |
| Piston stroke, mm | 86 |
| Cylinder bore, mm | 82.5 |
| Compression ratio | 9.5 10 |
| Displacement, cc | 1838 |
| Power output, hp | 110/6000 125/6000 140/6400 |
| Torque output, Nm / rpm | 156/4000 156/4800 167/4800 |
| Fuel type | petrol |
| Euro standards | Euro 2/3 |
| Fuel consumption, L/100 km (for Nissan Sunny 1999) — city — highway — combined |
9.8 5.7 7.4 |
| Oil consumption, gr/1000 km | up to 500 |
| Recommended engine oil | 5W-30 / 5W-40 / 10W-30 / 10W-40 |
| Engine oil capacity, liter | 3.4 |
| Oil change interval, km | 15000 |
| Engine lifespan, km | ~380 000 |
| Weight, kg | 152 |
Disadvantages of the SR18DE engine
Nearly trouble – free motor that can easily travel 300 – 400 thousand kilometers without requiring significant repairs; many owners experience floating revs as a result of idle speed controller and mass air flow sensor failures;
The oil pressure sensor and the crankshaft oil seal are examples of lubrication leaks.
The timing chain extends to roughly this run and has a resource of 250,000 km;
Oil starvation and channel blockage result from using subpar lubricant.