| Toyota SZ engine | |
| Manufacturer: | Toyota, Daihatsu[1] |
| Production: | 1999–present |
| Configuration: | Naturally aspirated straight-4 |
| Fueltype: | Petrol |
| Fuelsystem: | Electronic fuel injection Direct injection |
| Coolingsystem: | Water-cooled |
| Redline: | 6500 |
| Compression: | 10.0:1, 11.0:1 |
| Valvetrain: | DOHC 4 valves x cyl. with VVT-i |
| Weight: | 680NaN0 |
| Block: | Cast-iron |
| Displacement: | 997cc 1298cc 1495cc |
| Bore: | 69mm 72mm |
| Stroke: | 66.7mm 79.6mm 91.8mm |
| Power: | NaNNaN |
| Torque: | NaNNm |
| Predecessor: | Toyota E engine Daihatsu H-series engine (for K3 and 3SZ models) |
| Successor: | Toyota NR engine (for some models) Toyota KR engine (I3, for 1SZ-FE) |
The Toyota SZ engine family is a series of straight-4 piston engines with a forward-facing exhaust. Toyota Motor Manufacturing (UK) in Deeside produces SZ engines for the Yaris.[2] All three types of the SZ engine are built in Tianjin FAW Toyota Engine Co., Ltd. (TFTE) Plant No. 1 in Xiqing District, Tianjin, China.[3] [4] The 2SZ-FE and 3SZ-FE variations are also manufactured by PT Astra Daihatsu Motor's Karawang Engine Plant in Indonesia.[5] [6] [7]
The 1SZ-FE was jointly developed by Toyota and Daihatsu. It has 4 cylinders It is 997cc. 4 valve per cylinder. Bore and stroke is NaNmm, with a compression ratio of 10.0:1. Output is 51.5NaN at 6000 rpm with 95Nm of torque at 4000 rpm. It features VVT-i, off-set type crankshaft which reduces friction losses and narrow-angle valves. Engine weight of 680NaN0; was achieved by using cast-iron cylinder block produced by cold-box method.
Applications:
The 2SZ-FE is 1298cc. Bore and stroke is NaNmm, with a compression ratio of 11.0:1. Output is 640NaN0 at 6000 rpm with 122Nm of torque at 4200 rpm. Daihatsu's internal code for this engine is labeled as K3-DE/VE and the turbocharged version as K3-VET. The engine features VVT-i (except for K3-DE model). In China, this engine is usually known as the 4A13.
Applications:
The 3SZ-VE is 1495cc, introduced in October 2005. First installed in 2005 on the second generation Daihatsu Terios. Bore and stroke is NaNmm, with a compression ratio of 10.0:1 and redline of 6500 rpm. Output is 800NaN0 at 6000 rpm with 141Nm of torque at 4400 rpm. Commercial variant in Daihatsu Luxio and Daihatsu Gran Max has output of 970NaN0 at 6000 rpm with 13.70NaN0 of torque at 4400 rpm.[8] It features VVT-i.
Applications: