New, updated version of the engine, introduced in 2003. Features TwinPort technology - twin intake ports with a choke closing one of the ports at low RPM, providing strong air swirl pattern for higher torque levels and better fuel economy.
- Z10XEP 1.0 L Straight-3 (998 cc): 73.4 mm (2.89 in) bore, 78.6 mm (2.94 in) stroke, 10.5:1 compression, 60 hp (44 kW) @ 5600 rpm, 65 lbs.ft (88 Nm) @ 3800 rpm.
- Z12XEP 1.2 L Straight-4 (1229 cc): 73.4 mm (2.89 in) bore, 72.6 mm (2.86 in) stroke, 10.5:1 compression, 80 hp (59 kW) @ 5600 rpm, 81 lbs.ft (110 Nm) @ 4000 rpm.
- Z14XEP 1.4 L Straight-4 (1364 cc): 73.4 mm (2.89 in) bore, 80.6 mm (3.2 in) stroke, 10.5:1 compression, 90 hp (66 kW) @ 5600 rpm, 92 lbs.ft (125 Nm) @ 4000 rpm.
For model year 2011, the Ecotec Twinport 1.2 and 1.4 engines have been updated with double cam phasing (DCVCP) in a 'Gen III block.
US version of the 2013 Chevrolet Beat features a differently stroked engine block:
- LL0: 1.2 L Straight-4 (1249 cc): 70.5 mm (2.8 in) bore, 80.0 mm (3.1 in) stroke, 10.5:1 compression, 84.0 hp (62.66 kW) @ 6400 rpm, 82.6 lbf·ft (112.05 N·m) @ 6400 rpm.
Ecotec TwinPort engines are used in:
- Holden Barina XC
- Opel/Vauxhall Corsa
- Opel/Vauxhall Tigra
- Opel/Vauxhall Astra
- Opel/Vauxhall Meriva
- Opel/Vauxhall Ampera
- Chevrolet Beat (RPO code LL0, North America)
Read more about this topic: GM Family 0 Engine